Recursion and Two Pointer Algorithms to Determine Four Sum
Given a list of integers nums and an integer k, return whether there are four distinct elements in the list that add up to k. Constraints n ≤ 100 …
Tag: recursion
Teaching Kids Programming – Algorithms to Remove Nodes from a Linked List
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a Linked List, remove the nodes with a given value. Remove a Node using Recursion If the head is …
Algorithms to Compute the Length of a Linked List
Given a singly linked list node, return its length. The linked list has fields next and val. Constraints n ≤ 100,000 where n is the number of nodes in …
Depth First Search Algorithm to Compute the Sum of Nodes with Even Grandparent Values
Given a binary tree root, return the sum of all node values whose grandparents have an even value. Constraints 0 ≤ n ≤ 100,000 where n is the number …
Recursive Algorithm to Convert a List to Binary Search Tree
Given a sorted list nums of size n, construct a binary search tree by Taking nums as the root where k = floor(n / 2). Recursively constructing the left …