Tasks Details
easy
1.
BinaryGap
Find longest sequence of zeros in binary representation of an integer.
Task Score
100%
Correctness
100%
Performance
Not assessed
A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of N.
For example, number 9 has binary representation 1001 and contains a binary gap of length 2. The number 529 has binary representation 1000010001 and contains two binary gaps: one of length 4 and one of length 3. The number 20 has binary representation 10100 and contains one binary gap of length 1. The number 15 has binary representation 1111 and has no binary gaps. The number 32 has binary representation 100000 and has no binary gaps.
Write a function:
class Solution { public int solution(int N); }
that, given a positive integer N, returns the length of its longest binary gap. The function should return 0 if N doesn't contain a binary gap.
For example, given N = 1041 the function should return 5, because N has binary representation 10000010001 and so its longest binary gap is of length 5. Given N = 32 the function should return 0, because N has binary representation '100000' and thus no binary gaps.
Write an efficient algorithm for the following assumptions:
- N is an integer within the range [1..2,147,483,647].
Copyright 2009–2025 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.
Solution
Programming language used Java 8
Time spent on task 45 minutes
Notes
not defined yet
Task timeline
Code: 08:35:23 UTC,
java,
autosave
Code: 08:39:20 UTC,
java,
autosave
Code: 08:39:31 UTC,
java,
autosave
Code: 08:39:48 UTC,
java,
autosave
Code: 08:40:14 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
//Stack<Integer> st = new Stack<Integer>();
}
}
Code: 08:41:03 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
//Stack<Integer> st = new Stack<Integer>();
fo
}
}
Code: 08:41:16 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
//Stack<Integer> st = new Stack<Integer>();
while(N/2==)
}
}
Code: 08:41:45 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
while(N/2==1){
st.push(N%2);
}
}
}
Code: 08:42:16 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer>
while(N/2==1){
st.push(N%2);
N=N/2;
}
}
}
Code: 08:42:47 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
}
}
}
Code: 08:42:59 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1
}
}
Code: 08:43:28 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int
for(int i=0; i<list.size(); i++){
}
}
}
Code: 08:43:58 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
for(int i=0; i<list.size(); i++){
}
}
}
Code: 08:44:28 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
}
}
}
}
Code: 08:44:45 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
}
}
}
}
Code: 08:45:14 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:53:13 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ใด
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:53:26 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
String binary = 0;
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
list.add(st.peek());
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:53:44 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
String binary = 0;
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
binary = binary + st.peek();
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:54:13 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
String binary = 0;
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
for(int i=0; i<st.size(); i++){
binary = binary + st.peek();
} // 1 0 0 1 0 0 0
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:54:27 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:54:55 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
//๋ฆฌ์คํธ์ ๋ด๊ธฐ
bgLen = 0;
}
}
}
}
Code: 08:55:14 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
}
}
Code: 08:55:29 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
return Math.max(list);
}
}
Code: 08:55:32 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
return Math.max(list);
}
}
Analysis
Compile error
Solution.java:30: error: no suitable method found for max(ArrayList<Integer>)
return Math.max(list);
^
method Math.max(int,int) is not applicable
(actual and formal argument lists differ in length)
method Math.max(long,long) is not applicable
(actual and formal argument lists differ in length)
method Math.max(float,float) is not applicable
(actual and formal argument lists differ in length)
method Math.max(double,double) is not applicable
(actual and formal argument lists differ in length)
1 error
Code: 08:55:59 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collection.sort(list);
return list.get();
}
}
Code: 08:56:04 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collection.sort(list);
return list.get(list.size()-1);
}
}
Analysis
Compile error
Solution.java:30: error: cannot find symbol
Collection.sort(list);
^
symbol: method sort(ArrayList<Integer>)
location: interface Collection
1 error
Code: 08:56:12 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.get(list.size()-1);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:31) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:31) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:31) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 08:57:22 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
S
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.get(list.size()-1);
}
}
Code: 08:57:35 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
System.out.println(st);
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.get(list.size()-1);
}
}
Code: 08:57:48 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
System.out.println(st);
/*
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
*/
return 0;
//return list.get(list.size()-1);
}
}
Analysis
expand all
Example tests
1.
0.004 s
WRONG ANSWER,
got 0 expected 5
stdout:
[]
1.
0.004 s
OK
stdout:
[]
1.
0.004 s
OK
stdout:
[]
Code: 08:58:07 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
/*
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
*/
return 0;
//return list.get(list.size()-1);
}
}
Code: 08:58:16 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
System.out.println(st.peek());
N=N/2;
}
/*
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
*/
return 0;
//return list.get(list.size()-1);
}
}
Analysis
Code: 08:58:37 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
*/
return 0;
//return list.get(list.size()-1);
}
}
Code: 08:58:41 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return 0;
return list.get(list.size()-1);
}
}
Analysis
Compile error
Solution.java:34: error: unreachable statement
return list.get(list.size()-1);
^
1 error
Code: 08:58:48 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.get(list.size()-1);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 08:59:22 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.;
}
}
Code: 08:59:24 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N/2==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Analysis
Code: 09:01:49 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:02:49 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Analysis
Code: 09:03:24 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
st.
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:03:28 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
st.pop()
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Analysis
Compile error
Solution.java:23: error: ';' expected
st.pop()
^
1 error
Code: 09:03:33 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Analysis
Code: 09:03:58 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
list.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:04:08 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<st.size(); i++){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:04:19 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:04:30 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:06:40 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> list = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:06:55 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
list.add(bgLen);
bgLen = 0;
}
}
Collections.sort(list);
return list.size();
}
}
Code: 09:07:02 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist);
return list.size();
}
}
Code: 09:07:11 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist);
return bnlist.get(bnlist.size()-1);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(ArrayList.java:424) at java.util.ArrayList.get(ArrayList.java:437) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:09:13 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist);
return bnlist.get(bnlist.size()-1);
}
}
Code: 09:09:30 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:11:16 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:11:20 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N==1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:12:36 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N=1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:12:38 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
ArrayList<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
1.
0.004 s
WRONG ANSWER,
got 3 expected 5
1.
0.004 s
OK
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:32) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:14:32 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
S<Integer> list = new ArrayList<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
list.add(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:14:53 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
for(int i=0; i<list.size(); i++){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:15:15 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = list.get(i);
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:15:26 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek(i);
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:15:29 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek(i);
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
Compile error
Solution.java:21: error: cannot find symbol
current = st.peek(i);
^
symbol: variable i
location: class Solution
1 error
Code: 09:15:37 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:16:55 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
= st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Code: 09:16:56 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
= st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
Compile error
Solution.java:13: error: illegal start of expression
= st.push(N%2);
^
1 error
Code: 09:16:59 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:18:14 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
expand all
Example tests
example1
example test n=1041=10000010001_2
example test n=1041=10000010001_2
✘
RUNTIME ERROR
tested program terminated with exit code 1
tested program terminated with exit code 1
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.008 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
1.
0.004 s
RUNTIME ERROR,
tested program terminated with exit code 1
stderr:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(ArrayList.java:659) at java.util.ArrayList.get(ArrayList.java:435) at Solution.solution(Solution.java:33) at Exec.run(exec.java:44) at Exec.main(exec.java:33)
Code: 09:18:30 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.s;
}
}
Code: 09:18:33 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()==0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.size();
}
}
Analysis
Code: 09:19:02 UTC,
java,
autosave
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.size();
}
}
Code: 09:19:02 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()<>0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.size();
}
}
Analysis
Compile error
Solution.java:20: error: illegal start of expression
while(st.size()<>0){
^
1 error
Code: 09:19:11 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()!=0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.size();
}
}
Analysis
expand all
Example tests
1.
0.008 s
WRONG ANSWER,
got 3 expected 5
1.
0.008 s
WRONG ANSWER,
got 4 expected 0
1.
0.004 s
WRONG ANSWER,
got 1 expected 0
Code: 09:19:22 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()!=0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
Code: 09:19:35 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()!=0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis
Code: 09:19:40 UTC,
java,
final,
score:
100
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.util.*;
class Solution {
public int solution(int N) {
Stack<Integer> st = new Stack<Integer>();
ArrayList<Integer> bnlist = new ArrayList<Integer>();
while(N>=1){
st.push(N%2);
N=N/2;
}
int bgLen = 0;
int current = 0;
while(st.size()!=0){
current = st.peek();
st.pop();
if(current ==0){
bgLen++;
}
else{
bnlist.add(bgLen);
bgLen = 0;
}
}
Collections.sort(bnlist, Collections.reverseOrder());
return bnlist.get(0);
}
}
Analysis summary
The solution obtained perfect score.
Analysis
expand all
Correctness tests
1.
0.004 s
OK
2.
0.004 s
OK
3.
0.008 s
OK
1.
0.004 s
OK
2.
0.008 s
OK
1.
0.008 s
OK
2.
0.004 s
OK
3.
0.008 s
OK
1.
0.004 s
OK
2.
0.004 s
OK
1.
0.008 s
OK
2.
0.004 s
OK
1.
0.004 s
OK
2.
0.004 s
OK
1.
0.004 s
OK
2.
0.008 s
OK
1.
0.008 s
OK
2.
0.004 s
OK
1.
0.008 s
OK
1.
0.004 s
OK
1.
0.008 s
OK
1.
0.008 s
OK
1.
0.008 s
OK
1.
0.004 s
OK
1.
0.004 s
OK