DescriptionGiven a complete binary tree, count the number of nodes. The original problem is here. The original code is here.

DescriptionFind all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that nu

DescriptionGiven a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. Each number in C may only be used once in the c

DescriptionGiven a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen from C unlimite

DescriptionGiven an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Your g

DescriptionGiven an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. The original problem is here. The original code is here.

DescriptionGiven an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determ

DescriptionGiven a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digi

DescriptionFind the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the la

DescriptionGiven two strings s and t, write a function to determine if t is an anagram of s. For example,s = “anagram”, t = “nagaram”, return true.s = “rat”, t = “car”, return false. Note:You may assu