Category: coding exercise

A Binary Search Tree (BST) is a binary tree that satisfies the following requirements: The value of a parent node is bigger than all values of its left sub …

A Singly Linked List is a one-direction List that uses a pointer to connect between Nodes. To reverse a linked list, you need to re-connect the directions, for example: …

There are N gas stations along a circular route, where the amount of gas at station i is gas. You have a car with an unlimited gas tank and …

Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it …

Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Merging …