Check if an element exists in an array, based on that update an array
Problem description :
Write a function which detects if the given element exists in an array or not.
- If it does not exist then adds it to an array
- If it does exist then logs the message saying that it already exists to an array
Input : An array // ['mango', 'banana', 'grapes']
Logic :
- Find if the given element exist in an array or not using Array.prototype.indexOf()
- If it does not exist then adds it to an array and log the new array
- If it does exist then log the message saying that it already exists to an array