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BISHAL DATTA
Feeding,Building myself to get a better devoloper,,,engineer
var map = function(arr, fn) { let n=arr.length; let arr2=[]; for(let i=0;i<n;i++){ //here we can call this function with 0 || 1 || 2 no of arguments arr2.push(fn(arr[i],i)); } return arr2; }; function arguments behavior ...
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