Marcela channeling Margeeka

The comments-thread on that post is already 579 deep, so I figured I’d post my very simple, no-frills AS3 solution here:

function russianMult(a:int, b:int):int {
	var sum:int = a%2 != 0 ? b : 0;
	while(Math.floor(a/2) > 0){
		a = Math.floor(a/2);
		b *= 2;
		if(a % 2 != 0) sum += b;
	}
	return sum;
}