Tower of Hanoi

hanoi.js

(function(n) {
  // DEFAULT to 5 if n is undefined
	if (!n) {
	  console.log("DEFAULT to 5 if n is undefined");
		n = 5;
	}

	var A = Array.apply(0, Array(n)).map(function(x, y){return y+1}).reverse();
	var B = [];
	var C = [];

	var print = function() {
		console.log("=====");
		console.log(A);
		console.log(B);
		console.log(C);
	}

	var func = function(n, from, to, aux) {
		if (n > 0) {
			func(n-1, from, aux, to);
			to.push(from.pop());
			print();
			func(n-1, aux, to, from);
		}
	}
	
	print();
	func(n, A, C, B);
})();