gistfile1.js

function decrypt(input1,input2)
{ 
	var encText = input1.split(' ');
	var flag=false;
	for(var i=1; i <= 26; i++) {
		var decText = "";
		for(var encWordIndex in encText) {
			var encWord = encText[encWordIndex];
			var decWord = "";
			//return encWord;
			for(var encCharIndex in encWord.split("")) {
				var encChar = encWord.split("")[encCharIndex];
				var encCharCode = encChar.charCodeAt();
				var decCharCode = encCharCode + i;
				if(decCharCode > 122) {
					decCharCode = decCharCode - 26;
				}
				var decWord = decWord + String.fromCharCode(decCharCode);
				//return encChar + " : " + encCharCode + " : " + String.fromCharCode(decCharCode);
			}
			//return encWord + " :: " + decWord + " : " + input2.indexOf(decWord);
			if(input2.indexOf(decWord) != -1) {
				decText = decText + " " + decWord;
			} else {
				break;
			}
			
			if(decText.length >= input1.length) {
				flag = true;
				break;
			}
		}
		//console.log(decText);
		if(flag) {		
			return decText;
		}
	}
	return "viz";
}