Algorithms

### [LeetCode 957] Prison Cells After N Days

Solution Overview First of all, one can consider this problem as a simplified ...
Algorithms

### [LeetCode 1135] Connecting Cities With Minimum Cost

References https://leetcode.com/problems/connecting-cities-with-minimum-cost/ https://www.youtube.com/watch?v=GFsPyTdCS1I Solution Approach 1: Minimum Spanning Tree (Using Kruskal’s algorithm) Intuition ...
Algorithms

### [LeetCode 1629] Slowest Key

A newly designed keypad was tested, where a tester pressed a sequence of n keys, ...
Algorithms

### LeetCode 837. New 21 Game.

Alice plays the following game, loosely based on the card game “21”. Alice ...
Algorithms

### [LeetCode 1104] Path in ZigZag Labelled Binary Tree

In an infinite binary tree where every node has two children, the nodes ...
Algorithms

### [LeetCode 1008] Construct Binary Tree From Preorder Traversal

Given an array of integers preorder, which represents the preorder traversal of a BST (i.e., binary ...
Algorithms

### [LeetCode 1766] Tree of Coprimes

There is a tree (i.e., a connected, undirected graph that has no cycles) consisting ...
Algorithms

### [LeetCode 1130] Minimum Cost Tree From Leaf Values

Given an array arr of positive integers, consider all binary trees such that: Each node ...
Algorithms

### [LeetCode 1339] Maximum Product of a Splitted Binary Tree

Given a binary tree root. Split the binary tree into two subtrees by removing 1 edge ...
Algorithms

### [LeetCode 1145] Binary Tree Coloring Game

Two players play a turn based game on a binary tree.  We are ...