/**
- @param words String
- @return String
*/
var Solution = function(words){
var l=words.length var a=[] for(let i=0;i<l;i++) { var num=words[i].charCodeAt(); if(num>=65&&num<=87) { num+=3 } if(num>87&&num<91) { num-=23 } if(num>=97&&num<=119) { num+=3 } else if(num>119&&num<123) { num-=23 } a.push(String.fromCharCode(num)); } return a.join("")
}
