Lost Numbers

Lost Numbers

// 1/5/2016
// Lost Numbers

// Write a function that determines whether a given number is part of an array of lost numbers. 
// If it is a lost number have the function return true and if it is not then return false.

// Note: This kata is inspired by the first coding problem I ever solved on Codecademy. 
// Surprisingly I couldn't find it on Codewars so now its here for everyone. If you can't 
// solve the problem then work through this tutorial 
// http://www.codecademy.com/courses/functions-in-javascript-2-0/0/1?curriculum_id=4f4bdd96848740000300026a

// Test.expect(isLost(23),true)

// My Solution

var lost = [4, 8, 15, 16, 23, 42];

function isLost(num){
   
        if(lost.indexOf(num)===-1){
            return false;
        }else{
            return true;
        }
}

isLost(20)