LeetCode Q 338 - Counting BitsGiven a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calc

LeetCode Q 322 - Coin ChangeYou are given coins of different denominations and a total amount of money amount. Write a f

LeetCode Q 304 - Range Sum Query 2D - ImmutableGiven a 2D matrix matrix, find the sum of the elements inside the rectang

LeetCode Q 303 - Range Sum Query - ImmutableGiven an integer array nums, find the sum of the elements between indices i

LintCode Q 909 - Android Unlock PatternsGiven an Android 3x3 key lock screen and two integers m and n, where 1 ≤ m ≤ n ≤

LintCode Q 514 - Paint FenceThere is a fence with n posts, each post can be painted with one of the k colors. You have t