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//JavaScript program to swap two variables//take input from the userslet a = prompt('Enter the first variable: ');let b = prompt('Enter the second variable: ');//using destructuring assignment[a, b] = [b, a];console.log(`The value of a after swapping: ${a}`);console.log(`The value of b after swapping: ${b}`);
console.log("hello world")
const compactObject = val => {const data = Array.isArray(val) ? val.filter(Boolean) : val;return Object.keys(data).reduce((acc, key) => {const value = data[key];if (Boolean(value))acc[key] = typeof value === 'object' ? compactObject(value) : value;return acc;},Array.isArray(val) ? [] : {});};const obj = {a: null,b: false,c: true,d: 0,e: 1,f: '',g: 'a',h: [null, false, '', true, 1, 'a'],i: { j: 0, k: false, l: 'a' }};compactObject(obj);// { c: true, e: 1, g: 'a', h: [ true, 1, 'a' ], i: { l: 'a' } }
/*** @param {number[]} nums* @param {number} target* @return {number[]}*/var twoSum = function(nums, target) {for(let i = 0; i < nums.length; i++) {for(let j = 0; j < nums.length; j++) {if(nums[i] + nums[j] === target && i !== j) {return [i, j]}}}};
const geometricProgression = (end, start = 1, step = 2) =>Array.from({length: Math.floor(Math.log(end / start) / Math.log(step)) + 1,}).map((_, i) => start * step ** i);geometricProgression(256); // [1, 2, 4, 8, 16, 32, 64, 128, 256]geometricProgression(256, 3); // [3, 6, 12, 24, 48, 96, 192]geometricProgression(256, 1, 4); // [1, 4, 16, 64, 256]
const euclideanDistance = (a, b) =>Math.hypot(...Object.keys(a).map(k => b[k] - a[k]));euclideanDistance([1, 1], [2, 3]); // ~2.2361euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495