Test results - Codility

Tasks Details

easy

1. BinaryGap

Find longest sequence of zeros in binary representation of an integer.

Task Score

73%

Correctness

73%

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:

def solution(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].

Solution

Programming language used Python

Time spent on task 90 minutes

Notes

not defined yet

Code: 10:25:46 UTC, java, autosave

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// 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");

class Solution {
    public int solution(int N) {
        // write your code in Java SE 8
    }
}

Code: 10:26:04 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    pass

Code: 11:34:52 UTC, py, autosave

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1 2 3 4 5 6

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    p

Code: 11:35:03 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6

Code: 11:35:17 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    cnt = 0


    for c in N:

Code: 11:35:47 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    cnt = 0

    strN = str(N)
    for c in strN:

Code: 11:36:05 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    cnt = 0
    flag = False
    strN = str(N)
    for c in strN:

Code: 11:36:20 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    cnt = 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c !=

Code: 11:36:39 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    cnt = 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:

Code: 11:37:10 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0

Code: 11:37:40 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:

Code: 11:38:11 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:38:21 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:39:03 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
d
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:39:17 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:39:40 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        N = N/2

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:39:58 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        if N%2

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:40:21 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        ret += N%2
        N = N//2

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:40:52 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        if N < 2:
            break

        ret += str(N%2)
        N = N//2

    

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:41:02 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        if N < 2:
            break

        ret += str(N%2)
        N = N//2

    return ret + str(N)

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = str(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:41:13 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
    while True:
        if N < 2:
            break

        ret += str(N%2)
        N = N//2

    return ret + str(N)

def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = createBinaryStr(N)
    
    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:41:39 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def createBinaryStr(N):
    ret = ''
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    strN = createBinaryStr(N)
    
    while True:
        if N < 2:
            break

        ret += str(N%2)
        N = N//2

    return ret + str(N)

    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:41:49 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False
    
    while True:
        if N < 2:
            break

        ret += str(N%2)
        N = N//2

    return ret + str(N)

    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:42:02 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)
        N = N//2

    return ret + str(N)

    for c in strN:
        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

Code: 11:42:14 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1

        N = N//2

    return ret + str(N)

    for c in strN:

Code: 11:42:25 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1
        N = N//2

Code: 11:42:37 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1
        N = N//2

Code: 11:42:48 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        if c == 1 and flag == False:
            flag = True
        
        cnt += 1
        N = N//2

Code: 11:44:27 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == False:
            flag = True
        
        cnt += 1
        N = N//2

Code: 11:44:38 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == False:
            flag = True
        
        else:
            cnt += 1
        N = N//2

Code: 11:45:08 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag, isgapexist = False, False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == False:
            flag = True
        
        else:
            cnt += 1

        N = N//2

Code: 11:45:24 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag, isgapexist = False, False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            isgapexist = True
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == False:
            flag = True
        
        else:
            cnt += 1

        N = N//2

Code: 11:45:36 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag, isgapexist = 0, False

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            isgapexist = True
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == False:
            flag = True
        
        else:
            cnt += 1

        N = N//2

Code: 11:45:57 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag, isgapexist = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == True:
            isgapexist = True
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2

Code: 11:46:13 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag, isgapexist = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag > 0:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2

Code: 11:46:37 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag == 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag

Code: 11:46:47 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag => 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag

Code: 11:46:58 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag => 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag => 1 and

Code: 11:47:11 UTC, py, autosave

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag >= 1 and

Code: 11:47:31 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2 and

Code: 11:47:44 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return

Code: 11:48:04 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

▶

example2
example test n=15=1111_2

✔

0.036 s

▶

example3
example test n=32=100000_2

✔

0.036 s

Code: 11:48:25 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)
    
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:48:36 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N < 2:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:48:45 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)

        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

▶

example2
example test n=15=1111_2

✔

0.036 s

▶

example3
example test n=32=100000_2

✔

0.036 s

Code: 11:48:58 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        print(c)
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:49:10 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        print(c, flag, cnt, maxcnt)
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

Code: 11:50:00 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1

        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:50:11 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
                cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

1041 1 0 1 -1
520 0 0 2 -1
260 0 0 3 -1
130 0 0 4 -1
65 1 0 5 -1
32 0 0 6 -1
16 0 0 7 -1
8 0 0 8 -1
4 0 0 9 -1
2 0 0 10 -1
1 1 0 11 -1

▶

example2
example test n=15=1111_2

✔

0.040 s

stdout:

15 1 0 1 -1
7 1 0 2 -1
3 1 0 3 -1
1 1 0 4 -1

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

32 0 0 1 -1
16 0 0 2 -1
8 0 0 3 -1
4 0 0 4 -1
2 0 0 5 -1
1 1 0 6 -1

Code: 11:50:58 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:51:05 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
            cnt += 1
        
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

1041 1 0 1 -1
520 0 0 2 -1
260 0 0 3 -1
130 0 0 4 -1
65 1 0 5 -1
32 0 0 6 -1
16 0 0 7 -1
8 0 0 8 -1
4 0 0 9 -1
2 0 0 10 -1
1 1 0 11 -1

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

15 1 0 1 -1
7 1 0 2 -1
3 1 0 3 -1
1 1 0 4 -1

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

32 0 0 1 -1
16 0 0 2 -1
8 0 0 3 -1
4 0 0 4 -1
2 0 0 5 -1
1 1 0 6 -1

Code: 11:52:07 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:52:07 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

1041 1 0 1 -1
520 0 0 2 -1
260 0 0 3 -1
130 0 0 4 -1
65 1 0 5 -1
32 0 0 6 -1
16 0 0 7 -1
8 0 0 8 -1
4 0 0 9 -1
2 0 0 10 -1
1 1 0 11 -1

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

15 1 0 1 -1
7 1 0 2 -1
3 1 0 3 -1
1 1 0 4 -1

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

32 0 0 1 -1
16 0 0 2 -1
8 0 0 3 -1
4 0 0 4 -1
2 0 0 5 -1
1 1 0 6 -1

Code: 11:52:56 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            p
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:53:01 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            print('::')
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

::
1041 1 0 1 -1
::
520 0 0 2 -1
::
260 0 0 3 -1
::
130 0 0 4 -1
::
65 1 0 5 -1
::
32 0 0 6 -1
::
16 0 0 7 -1
::
8 0 0 8 -1
::
4 0 0 9 -1
::
2 0 0 10 -1
::
1 1 0 11 -1

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

::
15 1 0 1 -1
::
7 1 0 2 -1
::
3 1 0 3 -1
::
1 1 0 4 -1

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

::
32 0 0 1 -1
::
16 0 0 2 -1
::
8 0 0 3 -1
::
4 0 0 4 -1
::
2 0 0 5 -1
::
1 1 0 6 -1

Code: 11:53:45 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
    
        elif c == 1 and flag == 0:
            flag = 1
        
        else:
            print('::')
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:53:51 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        elif c == 1 and flag == 0:
            flag = 1
        else:
            print('::')
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✘

WRONG ANSWER
got 0 expected 5

0.036 s

WRONG ANSWER, got 0 expected 5

stdout:

::
1041 1 0 1 -1
::
520 0 0 2 -1
::
260 0 0 3 -1
::
130 0 0 4 -1
::
65 1 0 5 -1
::
32 0 0 6 -1
::
16 0 0 7 -1
::
8 0 0 8 -1
::
4 0 0 9 -1
::
2 0 0 10 -1
::
1 1 0 11 -1

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

::
15 1 0 1 -1
::
7 1 0 2 -1
::
3 1 0 3 -1
::
1 1 0 4 -1

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

::
32 0 0 1 -1
::
16 0 0 2 -1
::
8 0 0 3 -1
::
4 0 0 4 -1
::
2 0 0 5 -1
::
1 1 0 6 -1

Code: 11:54:49 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = str(N%2)
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0
        elif c == 1 and flag == 0:
            flag = 1
        else:
            cnt += 1
        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:55:04 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = N%2
        
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0

        elif c == 1 and flag == 0:
            flag = 1

        else:
            cnt += 1

        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Code: 11:55:11 UTC, py, verify, result: Passed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = N%2
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0

        elif c == 1 and flag == 0:
            flag = 1

        else:
            cnt += 1

        print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✔

0.036 s

stdout:

1041 1 1 0 -1
520 0 1 1 -1
260 0 1 2 -1
130 0 1 3 -1
65 1 2 0 3
32 0 2 1 3
16 0 2 2 3
8 0 2 3 3
4 0 2 4 3
2 0 2 5 3
1 1 2 0 5

▶

example2
example test n=15=1111_2

✔

0.036 s

stdout:

15 1 1 0 -1
7 1 2 0 0
3 1 2 0 0
1 1 2 0 0

▶

example3
example test n=32=100000_2

✔

0.036 s

stdout:

32 0 0 1 -1
16 0 0 2 -1
8 0 0 3 -1
4 0 0 4 -1
2 0 0 5 -1
1 1 1 5 -1

Code: 11:55:27 UTC, py, verify, result: Passed

show code in pop-up

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# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = N%2
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0

        elif c == 1 and flag == 0:
            flag = 1

        else:
            cnt += 1

        # print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✔

0.036 s

▶

example2
example test n=15=1111_2

✔

0.036 s

▶

example3
example test n=32=100000_2

✔

0.036 s

Code: 11:55:32 UTC, py, verify, result: Passed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = N%2
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0

        elif c == 1 and flag == 0:
            flag = 1

        else:
            cnt += 1

        # print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✔

0.036 s

▶

example2
example test n=15=1111_2

✔

0.036 s

▶

example3
example test n=32=100000_2

✔

0.036 s

Code: 11:55:35 UTC, py, final, score: 73

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

# you can write to stdout for debugging purposes, e.g.
# print("this is a debug message")
def solution(N):
    # write your code in Python 3.6
    maxcnt, cnt = -1, 0
    flag = 0

    while True:
        if N == 0:
            break

        c = N%2
        if c == 1 and flag >= 1:
            flag = 2
            if cnt > maxcnt:
                maxcnt = cnt
            cnt = 0

        elif c == 1 and flag == 0:
            flag = 1

        else:
            cnt += 1

        # print(N, c, flag, cnt, maxcnt)
        N = N//2
    
    if flag == 2:
        return maxcnt
    else:
        return 0

Analysis summary

The following issues have been detected: wrong answers.

For example, for the input 6 the solution returned a wrong answer (got 1 expected 0).

Analysis

expand all Example tests

▶

example1
example test n=1041=10000010001_2

✔

0.056 s

▶

example2
example test n=15=1111_2

✔

0.036 s

▶

example3
example test n=32=100000_2

✔

0.036 s

expand all Correctness tests

▶

extremes
n=1, n=5=101_2 and n=2147483647=2**31-1

✔

0.036 s

▶

trailing_zeroes
n=6=110_2 and n=328=101001000_2

✘

WRONG ANSWER
got 1 expected 0

0.036 s

WRONG ANSWER, got 1 expected 0

0.036 s

WRONG ANSWER, got 5 expected 2

▶

power_of_2
n=5=101_2, n=16=2**4 and n=1024=2**10

✔

0.036 s

▶

simple1
n=9=1001_2 and n=11=1011_2

✔

0.036 s

▶

simple2
n=19=10011 and n=42=101010_2

✘

WRONG ANSWER
got 2 expected 1

0.036 s

WRONG ANSWER, got 2 expected 1

▶

simple3
n=1162=10010001010_2 and n=5=101_2

✔

0.036 s

▶

medium1
n=51712=110010100000000_2 and n=20=10100_2

✘

WRONG ANSWER
got 10 expected 2

0.036 s

WRONG ANSWER, got 10 expected 2

0.036 s

WRONG ANSWER, got 3 expected 1

▶

medium2
n=561892=10001001001011100100_2 and n=9=1001_2

✘

WRONG ANSWER
got 4 expected 3

0.036 s

WRONG ANSWER, got 4 expected 3

0.036 s

▶

medium3
n=66561=10000010000000001_2

✔

0.036 s

▶

large1
n=6291457=11000000000000000000001_2

✔

0.036 s

▶

large2
n=74901729=100011101101110100011100001

✔

0.036 s

▶

large3
n=805306373=110000000000000000000000000101_2

✔

0.036 s

▶

large4
n=1376796946=1010010000100000100000100010010_2

✔

0.036 s

▶

large5
n=1073741825=1000000000000000000000000000001_2

✔

0.036 s

▶

large6
n=1610612737=1100000000000000000000000000001_2

✔

0.036 s