Recursive Depth First Search Algorithm to Compute the Diameter of Binary Tree
Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path …
Category: c / c++
Can we Construct K Palindrome Strings?
Given a string s and an integer k. You should construct k non-empty palindrome strings using all the characters in s. Return True if you can use all the …
Algorithms to Group Words by Anagrams
Given an array of strings, group anagrams together. Example: Input: , Output: , , ] Note: All inputs will be in lowercase. The order of your output does not …
Algorithm to Count the Largest Group of Digit Sums
Given an integer n. Each number from 1 to n is grouped according to the sum of its digits. Return how many groups have the largest size. Example 1: …
How to Design Underground System using Several Hash Maps?
Implement the class UndergroundSystem that supports three methods: 1. checkIn(int id, string stationName, int t) A customer with id card equal to id, gets in the station stationName at …