Test results - Codility

Tasks Details

easy

1. EquiLeader

Find the index S such that the leaders of the sequences A[0], A[1], ..., A[S] and A[S + 1], A[S + 2], ..., A[N - 1] are the same.

Task Score

100%

Correctness

100%

Performance

100%

A non-empty array A consisting of N integers is given.

The leader of this array is the value that occurs in more than half of the elements of A.

An equi leader is an index S such that 0 ≤ S < N − 1 and two sequences A[0], A[1], ..., A[S] and A[S + 1], A[S + 2], ..., A[N − 1] have leaders of the same value.

For example, given array A such that:

A[0] = 4 A[1] = 3 A[2] = 4 A[3] = 4 A[4] = 4 A[5] = 2

we can find two equi leaders:

0, because sequences: (4) and (3, 4, 4, 4, 2) have the same leader, whose value is 4.

2, because sequences: (4, 3, 4) and (4, 4, 2) have the same leader, whose value is 4.

The goal is to count the number of equi leaders.

Write a function:

def solution(A)

that, given a non-empty array A consisting of N integers, returns the number of equi leaders.

For example, given:

A[0] = 4 A[1] = 3 A[2] = 4 A[3] = 4 A[4] = 4 A[5] = 2

the function should return 2, as explained above.

Write an efficient algorithm for the following assumptions:

N is an integer within the range [1..100,000];

each element of array A is an integer within the range [−1,000,000,000..1,000,000,000].

Solution

Programming language used Python

Time spent on task 18 minutes

Notes

not defined yet

Code: 18:07:47 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[] A) {
        // write your code in Java SE 8
    }
}

Code: 18:08:06 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(A):
    # write your code in Python 3.6
    pass

Code: 18:08:12 UTC, py, autosave

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1 2 3 4 5 6 7

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

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

Code: 18:08:30 UTC, py, autosave

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1 2 3 4 5 6 7 8

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

def solution(A):
    # write your code in Python 3.6
    size = 0
    
    pass

Code: 18:08:54 UTC, py, autosave

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1 2 3 4 5 6 7 8 9

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

def solution(A):
    # write your code in Python 3.6
    size = 0
    candidate = []
    for i,v in enumerate(A):
        candidate.append(

Code: 18:09:04 UTC, py, autosave

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1 2 3 4 5 6 7 8 9 10

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

def solution(A):
    # write your code in Python 3.6
    size = 0
    candidate = []
    for i,v in enumerate(A):
        if 
        candidate.append(v)

Code: 18:09:34 UTC, py, autosave

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1 2 3 4 5 6 7 8 9 10 11

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

def solution(A):
    # write your code in Python 3.6
    size = 0
    candidate = []
    for i,v in enumerate(A):
        if size == 0:
            candidate.append(v)
        elif v

Code: 18:09:50 UTC, py, autosave

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1 2 3 4 5 6 7 8 9 10 11 12 13

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

def solution(A):
    # write your code in Python 3.6
    size = 0
    candidate = []
    for i,v in enumerate(A):
        if size == 0:
            candidate.append(v)
            size += 1
        elif v != candidate[-1]:

Code: 18:10:08 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if size == 0 or :
            candidate.append(v)
        elif v != candidate[-1]:

Code: 18:10:18 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or :
            candidate.append(v)
        elif v != candidate[-1]:

Code: 18:12:40 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or :
            candidate.append(v)
        elif v != candidate[-1]:

Code: 18:12:49 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or :
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    print(candidate)

Analysis

expand all Example tests

▶

example
example test

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Traceback (most recent call last):
  File "exec.py", line 129, in <module>
    main()
  File "exec.py", line 70, in main
    sol = __import__('solution')
  File "/tmp/solution.py", line 8
    if len(candidate) == 0 or :
                              ^
SyntaxError: invalid syntax

Code: 18:13:00 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    print(candidate)

Analysis

expand all Example tests

▶

example
example test

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Invalid result type, int expected, <class 'NoneType'> found.

stdout:

[4, 4]

Code: 18:13:09 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    for

Code: 18:13:19 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    for candidate[0]

Code: 18:13:30 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()

Code: 18:14:03 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    p

Code: 18:14:19 UTC, py, verify, result: Failed

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    print(A.count(candidate[0]))

Analysis

expand all Example tests

▶

example
example test

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Invalid result type, int expected, <class 'NoneType'> found.

stdout:

Code: 18:14:33 UTC, py, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    count = A.count(candidate[0]))

Code: 18:14:58 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    count = A.count(candidate[0])
    
    if count <= len(A) // 2:
        return 0

Analysis

expand all Example tests

▶

example
example test

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Invalid result type, int expected, <class 'NoneType'> found.

Code: 18:15:07 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    count = A.count(candidate[0])
    
    if count <= len(A) // 2:
        return 0

Code: 18:15:13 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
            
    count = A.count(candidate[0])
    
    if count <= len(A) // 2:
        return 0

User test case 1:

[4]

User test case 2:

[1, 2]

Analysis

expand all Example tests

▶

example
example test

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Invalid result type, int expected, <class 'NoneType'> found.

expand all User tests

▶

test_data1

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Invalid result type, int expected, <class 'NoneType'> found.

▶

test_data2

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.036 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

Traceback (most recent call last):
  File "exec.py", line 129, in <module>
    main()
  File "exec.py", line 91, in main
    result = solution( A )
  File "/tmp/solution.py", line 13, in solution
    count = A.count(candidate[0])
IndexError: list index out of range

Code: 18:15:24 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    count = A.count(candidate[0])
    
    if count <= len(A) // 2:
        return 0

Code: 18:15:49 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    for i in A:

Code: 18:16:19 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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:

Code: 18:16:41 UTC, py, autosave

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0

Code: 18:17:01 UTC, py, autosave

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:

Code: 18:17:20 UTC, py, autosave

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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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1 = 0
    p2 = len(A)

Code: 18:17:49 UTC, py, autosave

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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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count

Code: 18:17:59 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(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    
    for

Code: 18:18:10 UTC, py, autosave

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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

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    
    for i,v in enumerate(A):

Code: 18:18:34 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(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if

Code: 18:19:04 UTC, py, autosave

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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(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len

Code: 18:19:33 UTC, py, verify, result: Passed

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

▶

test_data2

✔

0.036 s

OK
function result: 0

Code: 18:19:39 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(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

Code: 18:20:09 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(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

Code: 18:20:14 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 37 38 39 40

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[4, 4, 4, 4]

User test case 4:

[1, 1, 1, 1, 4]

User test case 5:

[1, 1, 1, 1, 4, 4]

User test case 6:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 3

▶

test_data4

✔

0.036 s

OK
function result: 2

▶

test_data5

✔

0.036 s

OK
function result: 1

▶

test_data6

✔

0.036 s

OK
function result: 10

Code: 18:21:43 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 38 39 40 41

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
    
    return 0
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

Code: 18:21:51 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 37 38 39 40 41 42

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    print(candidate)
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[4, 4, 4, 4]

User test case 4:

[1, 1, 1, 1, 4]

User test case 5:

[1, 1, 1, 1, 4, 4]

User test case 6:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

stdout:

[4, 4]

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

stdout:

[4]

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 3

stdout:

[4, 4, 4, 4]

▶

test_data4

✔

0.036 s

OK
function result: 2

stdout:

[1, 1, 1]

▶

test_data5

✔

0.036 s

OK
function result: 1

stdout:

[1, 1]

▶

test_data6

✔

0.036 s

OK
function result: 10

stdout:

[4, 4, 4, 4, 4]

Code: 18:22:09 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 37 38 39 40 41 42 43

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    print(candidate)
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            print("i:",i)
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[4, 4, 4, 4]

User test case 4:

[1, 1, 1, 1, 4]

User test case 5:

[1, 1, 1, 1, 4, 4]

User test case 6:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

stdout:

[4, 4]
i: 0
i: 2

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

stdout:

[4]

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 3

stdout:

[4, 4, 4, 4]
i: 0
i: 1
i: 2

▶

test_data4

✔

0.036 s

OK
function result: 2

stdout:

[1, 1, 1]
i: 0
i: 1

▶

test_data5

✔

0.036 s

OK
function result: 1

stdout:

[1, 1]
i: 0

▶

test_data6

✔

0.036 s

OK
function result: 10

stdout:

[4, 4, 4, 4, 4]
i: 0
i: 1
i: 2
i: 3
i: 4
i: 5
i: 6
i: 7
i: 8
i: 9

Code: 18:23:06 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 38 39 40 41 42 43

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    print(candidate)
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            print("i:",i)
            equi += 1
    return equi

Code: 18:23:09 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 37 38 39 40 41 42 43

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0
    
    print(candidate)
    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            print("i:",i)
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[1, 1]

User test case 4:

[4, 4, 4, 4]

User test case 5:

[1, 1, 1, 1, 4]

User test case 6:

[1, 1, 1, 1, 4, 4]

User test case 7:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

stdout:

[4, 4]
i: 0
i: 2

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

stdout:

[4]

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 1

stdout:

[1, 1]
i: 0

▶

test_data4

✔

0.036 s

OK
function result: 3

stdout:

[4, 4, 4, 4]
i: 0
i: 1
i: 2

▶

test_data5

✔

0.036 s

OK
function result: 2

stdout:

[1, 1, 1]
i: 0
i: 1

▶

test_data6

✔

0.036 s

OK
function result: 1

stdout:

[1, 1]
i: 0

▶

test_data7

✔

0.036 s

OK
function result: 10

stdout:

[4, 4, 4, 4, 4]
i: 0
i: 1
i: 2
i: 3
i: 4
i: 5
i: 6
i: 7
i: 8
i: 9

Code: 18:24:27 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 38 39 40 41 42

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0

    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            print("i:",i)
            equi += 1
    return equi

Code: 18:24:39 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 38

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0

    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

Code: 18:24:40 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 37 38

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0

    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[1, 1]

User test case 4:

[4, 4, 4, 4]

User test case 5:

[1, 1, 1, 1, 4]

User test case 6:

[1, 1, 1, 1, 4, 4]

User test case 7:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 1

▶

test_data4

✔

0.036 s

OK
function result: 3

▶

test_data5

✔

0.036 s

OK
function result: 2

▶

test_data6

✔

0.036 s

OK
function result: 1

▶

test_data7

✔

0.036 s

OK
function result: 10

Code: 18:24:47 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 37 38

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0

    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

User test case 1:

[4]

User test case 2:

[1, 2]

User test case 3:

[1, 1]

User test case 4:

[4, 4, 4, 4]

User test case 5:

[1, 1, 1, 1, 4]

User test case 6:

[1, 1, 1, 1, 4, 4]

User test case 7:

[4, 4, 4, 4, 1, 2, 3, 4, 4, 4, 4]

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

expand all User tests

▶

test_data1

✔

0.036 s

OK
function result: 0

▶

test_data2

✔

0.036 s

OK
function result: 0

▶

test_data3

✔

0.036 s

OK
function result: 1

▶

test_data4

✔

0.036 s

OK
function result: 3

▶

test_data5

✔

0.056 s

OK
function result: 2

▶

test_data6

✔

0.056 s

OK
function result: 1

▶

test_data7

✔

0.056 s

OK
function result: 10

Code: 18:24:51 UTC, py, final, score: 100

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 38

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

def solution(A):
    # write your code in Python 3.6
    candidate = []
    for i,v in enumerate(A):
        if len(candidate) == 0 or v == candidate[-1]:
            candidate.append(v)
        elif v != candidate[-1]:
            candidate.pop()
    
    try:
        count = A.count(candidate[0])
    except:
        count = 0
    
    if count <= len(A) // 2:
        return 0

    
    p1_len = 0
    p2_len = len(A)
    p1_count = 0
    p2_count = count
    equi = 0
    for i,v in enumerate(A):
        p1_len += 1
        p2_len -= 1
        if v == candidate[0]:
            p1_count += 1
            p2_count -= 1
        if p1_count > p1_len // 2 and p2_count > p2_len // 2:
            equi += 1
    return equi

Analysis summary

The solution obtained perfect score.

Analysis

Detected time complexity:

O(N)

expand all Example tests

▶

example
example test

✔

0.036 s

expand all Correctness tests

▶

single
single element

✔

0.036 s

▶

double
two elements

✔

0.036 s

▶

simple
simple test

✔

0.036 s

▶

small_random
small random test with two values, length = ~100

✔

0.036 s

▶

small
random + 200 * [MIN_INT] + random ,length = ~300

✔

0.036 s

expand all Performance tests

▶

large_random
large random test with two values, length = ~50,000

✔

0.116 s

▶

large
random(0,1) + 50000 * [0] + random(0, 1), length = ~100,000

✔

0.196 s

▶

large_range
1, 2, ..., N, length = ~100,000

✔

0.164 s

0.036 s

▶

extreme_large
all the same values

✔

0.212 s