function repeatStr(ch, n){ var str = ""; for(var i=0; i< n; i++){ str += ch; } return str; } function bigSum(a,b){ a = String(a); b = String(b);
var distLen = Math.abs(a.length - b.length); if(a.length > b.length){ b = repeatStr("0",distLen) + b; }else{ a = repeatStr("0",distLen) + a; } //console.log(b) var result = ""; var addPoint = 0; var j = 1; for(var i=0; i < a.length; i++){