private int min(int a,int b, int c){
        int l = Math.min(a, b);
        return Math.min(l, c);
    }
Date 03/08/2016
@author Tushar Roy

Find nth ugly number.

https://leetcode.com/problems/ugly-number-ii/
https://leetcode.com/problems/super-ugly-number/
http://www.geeksforgeeks.org/ugly-numbers/
src/com/interview/dynamic/UglyNumbers.java