_2620. Counter.md

2620. Counter

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First completed : July 09, 2024

Last updated : July 20, 2024

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Related Topics : N/A

Acceptance Rate : 81.53 %

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Solutions

• e2620 v1.js
• e2620 v2.js
• e2620 v3.js

JavaScript

e2620 v1.js

/**
 * @param {number} n
 * @return {Function} counter
 */
var createCounter = function(n) {
    var cnt = n - 1;
    return function() {
        cnt++;
        return cnt;
    };
};

e2620 v2.js

/**
 * @param {number} n
 * @return {Function} counter
 */
var createCounter = function(n) {
    return function() {
        return n++;
    };
};

/** 
 * const counter = createCounter(10)
 * counter() // 10
 * counter() // 11
 * counter() // 12
 */

e2620 v3.js

/**
 * @param {number} n
 * @return {Function} counter
 */
var createCounter = function(n) {
    return () => n++;
};