Tag: C++ coding exercise
Find the least number of perfect square numbers (1, 4, 9, 16, 25 …) which sum to the given integer n. For example, given n = 5, return 2 …
Given a singly linked list, determine if it is a palindrome. A palindrome is a string/number that mirrors itself, for example, 21312 reverse is also 21312. We are given …
Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another array, …
Write a function to check whether a given 32-bit signed integer is a power of 4. Example: If num = 64, return true. and if num = 9, return …
Given a binary tree, return all root-to-leaf paths. For example, given the following binary tree: 1 / \ 2 3 \ 5 All root-to-leaf paths are: Almost every tree …
