Test results - Codility

Tasks Details

medium

1. MinAvgTwoSlice

Find the minimal average of any slice containing at least two elements.

Task Score

100%

Correctness

100%

Performance

100%

A non-empty array A consisting of N integers is given. A pair of integers (P, Q), such that 0 ≤ P < Q < N, is called a slice of array A (notice that the slice contains at least two elements). The average of a slice (P, Q) is the sum of A[P] + A[P + 1] + ... + A[Q] divided by the length of the slice. To be precise, the average equals (A[P] + A[P + 1] + ... + A[Q]) / (Q − P + 1).

For example, array A such that:

A[0] = 4 A[1] = 2 A[2] = 2 A[3] = 5 A[4] = 1 A[5] = 5 A[6] = 8

contains the following example slices:

slice (1, 2), whose average is (2 + 2) / 2 = 2;

slice (3, 4), whose average is (5 + 1) / 2 = 3;

slice (1, 4), whose average is (2 + 2 + 5 + 1) / 4 = 2.5.

The goal is to find the starting position of a slice whose average is minimal.

Write a function:

def solution(A)

that, given a non-empty array A consisting of N integers, returns the starting position of the slice with the minimal average. If there is more than one slice with a minimal average, you should return the smallest starting position of such a slice.

For example, given array A such that:

A[0] = 4 A[1] = 2 A[2] = 2 A[3] = 5 A[4] = 1 A[5] = 5 A[6] = 8

the function should return 1, as explained above.

Write an efficient algorithm for the following assumptions:

N is an integer within the range [2..100,000];

each element of array A is an integer within the range [−10,000..10,000].

Solution

Programming language used Python

Time spent on task 21 minutes

Notes

not defined yet

Task timeline

Code: 06:42:09 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: 06:45:46 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: 06:47:51 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):

Code: 06:48:22 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):

    while True:

Code: 06:48:38 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(A):

    start_num = 0 

    while True:

Code: 06:51:31 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):

    start_num = 0 

    while True:
        ㄴ

Code: 06:51:59 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):

    start_num = 0 
    sum_num = 0

    while True:
        sum

Code: 06:52:09 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):

    start_num = 0 
    sum_num = 10000000

    while True:
        sum

Code: 06:52:40 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(A):

    start_num = 0 
    sum_num = 1000000

    while True:
        sum[start_num : star]

Code: 06:52:53 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):

    start_num = 0 
    sum_num = 1000000

    while True:
        sum[start_num : start_num + 2]

Code: 06:53:07 UTC, py, verify, result: Failed

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

def solution(A):

    start_num = 0 
    sum_num = 1000000

    print(A[start_num: start_num + 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.

stdout:

[4, 2]

Code: 06:53:23 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):

    start_num = 0 
    sum_num = 1000000


    whil
    print(A[start_num: start_num + 2])

Code: 06:53:53 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):

    start_num = 0 
    sum_num = 1000000


    while True:
         =sum(A[start_num: start_num + 2])/2

Code: 06:54:13 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(A):

    start_num = 0 
    sum_num = 1000000


    while True:
        now_avg =sum(A[start_num: start_num + 2])/2
        sum_

Code: 06:54:29 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):

    start_num = 0 
    avg_num = 1000000


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min()

Code: 06:54:57 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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)


    while True:

        while

        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

Code: 06:55:15 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

        if start_num + 2 ==

Code: 06:55:25 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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

        if start_num + 2 >=

Code: 06:55:56 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)

    if length_A == 2:
        return (A[0]+ A[1])/2


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

        if start_num + 2 >=

Code: 06:56:07 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

        if start_num + 2 >=

Code: 06:56:34 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    now_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        avg_num = min(avg_num, now_avg)
        start_num += 1

        if start_num + 2 >=

Code: 06:56:59 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    now_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num >= now_avg:
            
        start_num += 1

        if start_num + 2 >=

Code: 06:57:10 UTC, py, autosave

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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    now_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:

        start_num += 1

        if start_num + 2 >=

Code: 06:57:41 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    now_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num = now_avg

        start_num += 1

        if start_num + 2 >=

Code: 06:58:03 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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    now_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , now_num = now_avg

        start_num += 1

        if start_num + 2 >=

Code: 06:58:18 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg

        start_num += 1

        if start_num + 2 >=

Code: 06:58:29 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

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

def solution(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, 

        start_num += 1

        if start_num + 2 >=

Code: 06:58:40 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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, 

        start_num += 1

        if start_num + 2 >= length_A:
            break

Code: 06:59:11 UTC, py, autosave

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(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        print(start_num)

        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num

        start_num += 1

        if start_num + 2 >= length_A:
            break

Code: 06:59:23 UTC, py, verify, result: Failed

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

def solution(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        print(A[start_num: start_num + 2])

        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num

        start_num += 1

        if start_num + 2 >= length_A:
            break

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, 2]
[2, 2]
[2, 5]
[5, 1]
[1, 5]

Code: 06:59:33 UTC, py, verify, result: Failed

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

def solution(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        print(A[start_num: start_num + 2])

        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num

        start_num += 1

        if start_num + 2 > length_A:
            break

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, 2]
[2, 2]
[2, 5]
[5, 1]
[1, 5]
[5, 8]

Code: 06:59:42 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):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        print(A[start_num: start_num + 2])

        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

Code: 06:59:52 UTC, py, autosave

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

def solution(A):

    start_num = 0 
    avg_num = 1000000
    length_A = len(A)
    small_start_num = 0

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

Code: 07:00:23 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):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000

    length_A = len(A)
    

    if length_A == 2:
        return 0


    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

Code: 07:00:34 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):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0
        
    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

Code: 07:00:44 UTC, py, verify, result: Failed

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    print(avg_num, small_start_num)

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:

2.0 1

Code: 07:01:01 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):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    

    print(avg_num, small_start_num)

Code: 07:01:20 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(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        now_avg = sum(A[])


    print(avg_num, small_start_num)

Code: 07:01:40 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(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        now_avg = sum(A[start_num: start_num + 3])/3


    print(avg_num, small_start_num)

Code: 07:01:56 UTC, py, verify, result: Failed

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break


    print(avg_num, small_start_num)

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:

2.0 1

Code: 07:02:08 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(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        print()
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break


    print(avg_num, small_start_num)

Code: 07:02:10 UTC, py, verify, result: Failed

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break


    print(avg_num, small_start_num)

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, 2, 2]
[2, 2, 5]
[2, 5, 1]
[5, 1, 5]
[1, 5, 8]
2.0 1

Code: 07:02:23 UTC, py, verify, result: Failed

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break


    print(avg_num, small_start_num)

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:

2.0 1

Code: 07:02:38 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(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break

    return start_num

Code: 07:02:49 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(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break

    return small_start_num

Code: 07:02:51 UTC, py, verify, result: Passed

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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

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break

    return small_start_num

Analysis

expand all Example tests

▶

example
example test

✔

0.036 s

Code: 07:02:58 UTC, py, verify, result: Passed

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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

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break

    return small_start_num

Analysis

expand all Example tests

▶

example
example test

✔

0.040 s

Code: 07:03:00 UTC, py, final, score: 100

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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

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

def solution(A):

    start_num, small_start_num, avg_num= 0 , 0 , 1000000
    length_A = len(A)
    
    if length_A == 2:
        return 0

    while True:
        now_avg = sum(A[start_num: start_num + 2])/2
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 2 > length_A:
            break

    start_num = 0

    while True:
        #print(A[start_num: start_num + 3])
        now_avg = sum(A[start_num: start_num + 3])/3
        if avg_num > now_avg:
            avg_num , small_start_num = now_avg, start_num
        start_num += 1
        if start_num + 3 > length_A:
            break

    return small_start_num

Analysis summary

The solution obtained perfect score.

Analysis

Detected time complexity:

O(N)

expand all Example tests

▶

example
example test

✔

0.040 s

expand all Correctness tests

▶

double_quadruple
two or four elements

✔

0.040 s

▶

simple1
simple test, the best slice has length 3

✔

0.040 s

▶

simple2
simple test, the best slice has length 3

✔

0.040 s

▶

small_random
random, length = 100

✔

0.040 s

▶

medium_range
increasing, decreasing (legth = ~100) and small functional

✔

0.040 s

0.036 s

expand all Performance tests

▶

medium_random
random, N = ~700

✔

0.040 s

▶

large_ones
numbers from -1 to 1, N = ~100,000

✔

0.224 s

0.184 s

▶

large_random
random, N = ~100,000

✔

0.228 s

▶

extreme_values
all maximal values, N = ~100,000

✔

0.224 s

0.228 s

▶

large_sequence
many seqeneces, N = ~100,000

✔

0.220 s

0.168 s