Algorithms

### [LeetCode 1379] Find a Corresponding Node of a Binary Tree in a Clone of That Tree

Given two binary trees original and cloned and given a reference to a node target in the original tree. ...
Algorithms

### [LeetCode 404] Sum of Left Leaves

Find the sum of all left leaves in a given binary tree. Example: ...
Algorithms

### [LeetCode 959] Regions Cut By Slashes

In a N x N grid composed of 1 x 1 squares, each 1 x ...
Algorithms

### [LeetCode 210] Course Schedule II

There are a total of n courses you have to take labelled from 0 to n - 1. ...
Algorithms

### [LeetCode 990] Satisfiability of Equality Equations

Given an array equations of strings that represent relationships between variables, each string equations[i] has length 4 and takes ...
Algorithms

### [LeetCode 207] Course Schedule

There are a total of numCourses courses you have to take, labeled from 0 to numCourses-1. Some courses ...
Algorithms

### [LeetCode 133] Clone Graph

Given a reference of a node in a connected undirected graph. Return a deep copy (clone) of ...
Algorithms

### [LeetCode 765] Couples Holding Hands

N couples sit in 2N seats arranged in a row and want to ...