/*
  Arrays Methods [Joining]
  - concat(array, array) => Return A New Array
  - join(Separator)
*/

let myFriends = ["Ahmed", "Sayed", "Ali", "Osama", "Gamal", "Ameer"];
let myNewFriends = ["Samar", "Sameh"];
let schoolFriends = ["Haytham", "Shady"];

let allFriends = myFriends.concat(myNewFriends, schoolFriends, "Gameel", [1, 2]);

console.log(allFriends);

console.log(allFriends.join());
console.log(allFriends.join(""));
console.log(allFriends.join(" @ "));
console.log(allFriends.join("|"));
console.log(allFriends.join("|").toUpperCase());