const message:string = "helloworld";

//one way with built in functions
function reverseStringBuildIn(str){
    var mystr =  str.split("").reverse().join("");
    return mystr;
}


function reverseStringWithLoop(str){
    var mystr =  "";
    for(let i = str.length-1;i>=0;i--){
        mystr += str[i];
    }
    
    return mystr;
}

//Time Consuming Process if string is lengthy 
function reverseStringWithRecursion(str){
   if(str ===""){
        return str;       
   }else{
       return reverseStringWithRecursion(str.substr(1))+str.charAt(0);
   }
}

console.log("With Predefined Functions : "+message+" to "+ reverseStringBuildIn(message));
console.log("With Loop : "+message+" to " + reverseStringWithLoop(message));
console.log("With Recursion : "+message+" to " + reverseStringWithRecursion(message));