Category: data structure

Implement a rate limiter with the following methods: RateLimiter(int expire) constructs a new rate limiter with the given expire time. limit(int uid, int timestamp) returns whether the user should …

Teaching Kids Programming: Videos on Data Structures and Algorithms You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists …

In this problem, a tree is an undirected graph that is connected and has no cycles. The given input is a graph that started as a tree with N …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a Linked List, find out which is the Kth Node from the end of the Linked List. For example …

Teaching Kids Programming: Videos on Data Structures and Algorithms Introduction to Data Structure Double-Ended Queue So far, we have learned the Queue (First In First Out) and Priority Queue …