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solution #2469

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blabunch Feb 18, 2026
e92fd7d
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blabunch Feb 18, 2026
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30 changes: 28 additions & 2 deletions src/arrayMethodSort.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,34 @@
* Implement method Sort
*/
function applyCustomSort() {
[].__proto__.sort2 = function(compareFunction) {
// write code here
[].__proto__.sort2 = function (compareFunction) {

if (compareFunction !== undefined && typeof compareFunction !== 'function') {
throw new TypeError('The comparison function must be either a function or undefined');
}

const compare = compareFunction || function (a, b) {
const sA = String(a);
const sB = String(b);
if (sA < sB) return -1;
if (sA > sB) return 1;
return 0;
}

for (let i = 0; i < this.length; i++) {
for (let j = 0; j < this.length - 1 - i; j++) {
if (compare(this[j], this[j + 1]) > 0) {
const temp = this[j];
this[j] = this[j + 1];
this[j + 1] = temp;
}
}
}
return this;
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@mateacademy-ai-mentor mateacademy-ai-mentor Feb 18, 2026

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The task requires implementing Array.prototype.sort using the predefined [].__proto__.sort2. This file only defines sort2 and never adds/overrides Array.prototype.sort. Add a delegating implementation (for example: [].__proto__.sort = function(compareFunction) { return this.sort2(compareFunction); };) inside applyCustomSort() so the exported function installs both methods.

};

[].__proto__.sort = function(compareFunction) {
return this.sort2(compareFunction);
};
}

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