anagram program in javascript
function group_anagrams(arr) { let sortedArr = arr.map(item => item.split('').sort().join('')); let setArr = new Set(sortedArr); let reducedObj = {}; for (let setItem of setArr) { let indexArr = sortedArr.reduce((acc, cur, index) => { if (setItem === cur) { acc.push(index); } return acc; }, []); reducedObj[setItem] = indexArr; } let finalArr = []; for (let reduceItem in reducedObj) { finalArr.push(reducedObj[reduceItem].map(item => arr[item])); } return finalArr; } group_anagrams(['car','cra','rca', 'cheese','ab','ba']);
