Function numWays

chapter08/8.01 - Triple Step/tripleStep.js:1–14

(N)

var numWays = function(N) {
  var answer = 0;
  var recurse = function(number) {
    if (number === 0) {
      answer++;
    } else if (number > 0) {
      recurse(number - 1);
      recurse(number - 2);
      recurse(number - 3);
    }
  };
  recurse(N);
  return answer;
};

/* TEST */