michael@0: 
michael@0: function g(n) {
michael@0:   var s;
michael@0:   switch (n) {
michael@0:     case 0:
michael@0:     s = "c"+n;
michael@0:     break;
michael@0: 
michael@0:     default:
michael@0:     s = "d"+n;
michael@0:     break;
michael@0:   }
michael@0:   return s;
michael@0: }
michael@0: 
michael@0: // Do it twice with different initial values for 'i' to allow for 8
michael@0: // being even or odd.
michael@0: 
michael@0: var s = "";
michael@0: for (let i = 0; i != 30; i+=2) {
michael@0:   s += g(i%4/2);
michael@0: }
michael@0: assertEq(s, "c0d1c0d1c0d1c0d1c0d1c0d1c0d1c0");
michael@0: 
michael@0: var s = "";
michael@0: for (let i = 2; i != 30; i+=2) {
michael@0:   s += g(i%4/2);
michael@0: }
michael@0: assertEq(s, "d1c0d1c0d1c0d1c0d1c0d1c0d1c0");
michael@0: