Test results - Codility

Tasks Details

easy

1. MaxProfit

Given a log of stock prices compute the maximum possible earning.

Task Score

100%

Correctness

100%

Performance

100%

An array A consisting of N integers is given. It contains daily prices of a stock share for a period of N consecutive days. If a single share was bought on day P and sold on day Q, where 0 ≤ P ≤ Q < N, then the profit of such transaction is equal to A[Q] − A[P], provided that A[Q] ≥ A[P]. Otherwise, the transaction brings loss of A[P] − A[Q].

For example, consider the following array A consisting of six elements such that:

A[0] = 23171 A[1] = 21011 A[2] = 21123 A[3] = 21366 A[4] = 21013 A[5] = 21367

If a share was bought on day 0 and sold on day 2, a loss of 2048 would occur because A[2] − A[0] = 21123 − 23171 = −2048. If a share was bought on day 4 and sold on day 5, a profit of 354 would occur because A[5] − A[4] = 21367 − 21013 = 354. Maximum possible profit was 356. It would occur if a share was bought on day 1 and sold on day 5.

Write a function,

function solution(A);

that, given an array A consisting of N integers containing daily prices of a stock share for a period of N consecutive days, returns the maximum possible profit from one transaction during this period. The function should return 0 if it was impossible to gain any profit.

For example, given array A consisting of six elements such that:

A[0] = 23171 A[1] = 21011 A[2] = 21123 A[3] = 21366 A[4] = 21013 A[5] = 21367

the function should return 356, as explained above.

Write an efficient algorithm for the following assumptions:

N is an integer within the range [0..400,000];

each element of array A is an integer within the range [0..200,000].

Solution

Programming language used JavaScript

Time spent on task 21 minutes

Notes

not defined yet

Code: 10:59:46 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[] A) {
        // write your code in Java SE 8
    }
}

Code: 10:59:54 UTC, js, autosave

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1 2 3 4 5 6

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
}

Code: 11:00:37 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max()
    }
}

Code: 11:00:48 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, maxEnd + val)
    }
}

Code: 11:01:18 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, maxEnd + val);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:01:19 UTC, js, verify, result: Failed

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, maxEnd + val);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Analysis

expand all Example tests

▶

example
example, length=6

✘

WRONG ANSWER
got 129051 expected 356

0.132 s

WRONG ANSWER, got 129051 expected 356

Code: 11:01:31 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, maxEndval);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:04:17 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:04:24 UTC, js, verify, result: Failed

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    for (let val of A) {
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Analysis

expand all Example tests

▶

example
example, length=6

✘

WRONG ANSWER
got 23171 expected 356

0.068 s

WRONG ANSWER, got 23171 expected 356

Code: 11:07:30 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    
    for (let val of A) {
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:08:00 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let prevVal = 0;
    for (let i = 1; i < A) {
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:08:15 UTC, js, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let prevVal = 0;
    for (let i = 1; i < A.length; i++) {
        
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:08:41 UTC, js, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let prevVal = 0;
    for (let i = 1; i < A.length; i++) {
        prevVal = A[i]-
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:12:01 UTC, js, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = ;
    let maxSlice = 0;
    let prevVal = 0;
    for (let i = 1; i < A.length; i++) {
        prevVal = A[i]-
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:12:13 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:13:34 UTC, js, verify, result: Failed

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, val - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Analysis

expand all Example tests

▶

example
example, length=6

✘

RUNTIME ERROR
tested program terminated with exit code 1

0.128 s

RUNTIME ERROR, tested program terminated with exit code 1

stderr:

ReferenceError: val is not defined
    at solution (solution.js:9:30)
    at solutionWrapper (/tmp/exec.js:402:28)
    at Promise.resolve.then (/tmp/exec.js:428:24)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:188:7)
    at Function.Module.runMain (module.js:686:11)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3

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

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:13:52 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:14:41 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:14:52 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = A[0];
    let maxSlice = 0;
    for (let i = 1; i < A.length; i++) {
        if (A[i])
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:15:17 UTC, js, autosave

show code in pop-up

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i])
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:15:40 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal
        }
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:15:56 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        } else {
            
        }
        maxEnd = Math.max(0, A[i] - maxEnd);
        maxSlice = Math.max(maxSlice, maxEnd);
    }
    return maxSlice;
}

Code: 11:16:06 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        } else {
            maxEnd = Math.max(0, A[i] - maxEnd);
            maxSlice = Math.max(maxSlice, maxEnd);
        }
    }
    return maxSlice;
}

Code: 11:16:16 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        } else {
            let dif
            maxEnd = Math.max(0, A[i] - maxEnd);
            maxSlice = Math.max(maxSlice, maxEnd);
        }
    }
    return maxSlice;
}

Code: 11:16:26 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        } else {
            maxEnd = Math.max(0, A[i] - maxEnd);
            maxSlice = Math.max(maxSlice, maxEnd);
        }
    }
    return maxSlice;
}

Code: 11:16:36 UTC, js, autosave

show code in pop-up

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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        } else {
            maxEnd = Math.max(0, A[i] - curMinVal);
            maxSlice = Math.max(maxSlice, maxEnd);
        }
    }
    return maxSlice;
}

Code: 11:17:05 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:17:13 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.072 s

Code: 11:17:24 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:17:54 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:18:17 UTC, js, autosave

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// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    if (A.length < 2) {
        return 0;
    }
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:18:31 UTC, js, autosave

show code in pop-up

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// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:18:41 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

User test case 1:

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

User test case 2:

[]

User test case 3:

[1]

User test case 4:

[2, 1]

User test case 5:

[1, 2]

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.128 s

expand all User tests

▶

test_data1

✔

0.124 s

OK
function result: 0

▶

test_data2

✔

0.128 s

OK
function result: 0

▶

test_data3

✔

0.128 s

OK
function result: 0

▶

test_data4

✔

0.128 s

OK
function result: 0

▶

test_data5

✔

0.128 s

OK
function result: 1

Code: 11:18:53 UTC, js, autosave

show code in pop-up

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// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:19:07 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:19:15 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

User test case 1:

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

User test case 2:

[]

User test case 3:

[1]

User test case 4:

[2, 1]

User test case 5:

[1, 2]

User test case 6:

[1, 200000]

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.072 s

expand all User tests

▶

test_data1

✔

0.072 s

OK
function result: 0

▶

test_data2

✔

0.072 s

OK
function result: 0

▶

test_data3

✔

0.072 s

OK
function result: 0

▶

test_data4

✔

0.072 s

OK
function result: 0

▶

test_data5

✔

0.068 s

OK
function result: 1

▶

test_data6

✔

0.072 s

OK
function result: 199999

Code: 11:19:22 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

User test case 1:

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

User test case 2:

[]

User test case 3:

[1]

User test case 4:

[2, 1]

User test case 5:

[1, 2]

User test case 6:

[0, 200000]

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.132 s

expand all User tests

▶

test_data1

✔

0.132 s

OK
function result: 0

▶

test_data2

✔

0.136 s

OK
function result: 0

▶

test_data3

✔

0.136 s

OK
function result: 0

▶

test_data4

✔

0.132 s

OK
function result: 0

▶

test_data5

✔

0.132 s

OK
function result: 1

▶

test_data6

✔

0.132 s

OK
function result: 200000

Code: 11:19:34 UTC, js, 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.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Code: 11:19:52 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

User test case 1:

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

User test case 2:

[]

User test case 3:

[1]

User test case 4:

[2, 1]

User test case 5:

[1, 2]

User test case 6:

[0, 200000]

User test case 7:

[1, 10, 5, 9, 0, 12]

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.132 s

expand all User tests

▶

test_data1

✔

0.132 s

OK
function result: 0

▶

test_data2

✔

0.132 s

OK
function result: 0

▶

test_data3

✔

0.132 s

OK
function result: 0

▶

test_data4

✔

0.132 s

OK
function result: 0

▶

test_data5

✔

0.132 s

OK
function result: 1

▶

test_data6

✔

0.132 s

OK
function result: 200000

▶

test_data7

✔

0.132 s

OK
function result: 12

Code: 11:20:05 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

User test case 1:

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

User test case 2:

[]

User test case 3:

[1]

User test case 4:

[2, 1]

User test case 5:

[1, 2]

User test case 6:

[0, 200000]

User test case 7:

[1, 10, 5, 9, 0, 12]

Analysis

expand all Example tests

▶

example
example, length=6

✔

0.068 s

expand all User tests

▶

test_data1

✔

0.068 s

OK
function result: 0

▶

test_data2

✔

0.068 s

OK
function result: 0

▶

test_data3

✔

0.068 s

OK
function result: 0

▶

test_data4

✔

0.068 s

OK
function result: 0

▶

test_data5

✔

0.068 s

OK
function result: 1

▶

test_data6

✔

0.068 s

OK
function result: 200000

▶

test_data7

✔

0.068 s

OK
function result: 12

Code: 11:20:08 UTC, js, 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

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let maxEnd = 0;
    let maxSlice = 0;
    let curMinVal = A[0]
    for (let i = 1; i < A.length; i++) {
        maxEnd = Math.max(0, A[i] - curMinVal);
        maxSlice = Math.max(maxSlice, maxEnd);
        if (A[i] < curMinVal) {
            curMinVal = A[i];
        }
    }
    return maxSlice;
}

Analysis summary

The solution obtained perfect score.

Analysis

Detected time complexity:

O(N)

expand all Example tests

▶

example
example, length=6

✔

0.132 s

expand all Correctness tests

▶

simple_1
V-pattern sequence, length=7

✔

0.132 s

▶

simple_desc
descending and ascending sequence, length=5

✔

0.132 s

▶

simple_empty
empty and [0,200000] sequence

✔

0.132 s

▶

two_hills
two increasing subsequences

✔

0.136 s

▶

max_profit_after_max_and_before_min
max profit is after global maximum and before global minimum

✔

0.132 s

expand all Performance tests

▶

medium_1
large value (99) followed by short V-pattern (values from [1..5]) repeated 100 times

✔

0.136 s

▶

large_1
large value (99) followed by short pattern (values from [1..6]) repeated 10K times

✔

0.184 s

▶

large_2
chaotic sequence of 200K values from [100K..120K], then 200K values from [0..100K]

✔

0.360 s

▶

large_3
chaotic sequence of 200K values from [1..200K]

✔

0.260 s