various utils

leftpad.js

function leftpad (str, len, ch) {
	str = String(str);
	var i = -1;
	if (!ch && ch !== 0) ch = ' ';
	len = len - str.length;
	while (++i < len) {
		str = ch + str;
	}
	return str;
}
module.exports = leftpad;

leftpad('foo', 5) // => "  foo"

leftpad('foobar', 6) // => "foobar"

leftpad(1, 2, 0) // => "01"

rightpad.js

function rightpad (str, len, ch) {
	str = String(str);
	var i = -1;
	if (!ch && ch !== 0) ch = ' ';
	len = len - str.length;
	while (++i < len) {
		str += ch;
	}
	return str;
}
module.exports = rightpad;

rightpad('foo', 5)	// => "foo  "

rightpad('foobar', 6)	// => "foobar"

rightpad(1, 2, 0)	// => "10"

rnd.js

function random (max, min) {
	max || (max = 999999999999);
	min || (min = 0);
	
	return min + Math.floor(Math.random() * (max - min));
}
module.exports = random;

random()
// => 519306295418

random(99) // allows specifying the max n
// => 35

random(99, 77) // => max n and min n
// => 83