Problem 🤔 Given an undirected graph, write a function to detect whether a cycle exists in a graph…

Problem 🤔 Given a directed graph, write a function to detect whether a cycle exists in a graph…

Problem 🤔 There are a total of numCourses courses you have to take, labeled from 0 to numCourses-…

Problem 🤔 You are given an array of k linked-lists lists, each linked-list is sorted in ascending…

Problem 🤔 Given a root node reference of a BST and a key, delete the node with the given key in the…

Problem 🤔 You are given the root node of a binary search tree (BST) and a value to insert into the…