gistfile1.js

var result = 0;
	
for(var i = 0; i < a.length; i++){
	var currentResult = ((a[i] > b[i]) ? 1 : (a[i] < b[i]) ? -1 : 0 );
	currentResult = currentResult << (a.length - i);
	result |= currentResult;
}

return result * sortDir;