Arrays and Functions

//In both cases, the change to the array was maintained outside of the function

const concept = ['arrays', 'can', 'be', 'mutated'];

function changeArr(arr){
  arr[3] = 'MUTATED';
}

changeArr(concept);
console.log(concept); //Output will be [ 'arrays', 'can', 'be', 'MUTATED' ]

function removeElement(newArr){
  newArr.pop();
}

removeElement(concept);
console.log(concept);  //Output will be [ 'arrays', 'can', 'be' ]