clean house recursive optimized

cleanHouseOptimized

const todoList = [
  "pick up the floor",
  "clear the table",
  "put away dishes",
  "sweep",
  "clean the bathrooms",
  "dust",
  "mop",
];

//optimized cleanHouse: no copies are made!
function cleanHouseOptimized(list) {
  return _cleanHouse(list, 0);
}
function _cleanHouse(array, index) {
  console.log(array); // notice here the array is unchanged
  if (index === array.length) {
    console.log("Great job! House cleaning is done.");
    return; // you need this return to stop running the function!
  }
  return _cleanHouse(array, index + 1);
}

console.log(cleanHouseOptimized(todoList));