Debounce question

debounce.js

/*
  Fill in the body of the `debounce` function, such that running
  the following code will output "fn was called with 10!" only once.
*/
(function () {
  var debounce, fn, i;

  debounce = function (func, wait) {
    // ...
  };

  fn = function (n) {
    console.log("fn was called with " + n + "!");
  };

  fn = debounce(fn, 10);

  for (i = 0; i < 10; i++) {
    setTimeout(function () {
      fn(i);
    }, 5);
  }
})();