It contains the solutions of Leetcode October Challenge 2020

Link to the contest : Click:triangular_flag_on_post:

Problem Name	Click to open the Problem
Number of Recent Calls
Combination Sum
K-diff Pairs in an Array
Remove Covered Intervals
Complement of Base 10 Integer
Insert into a Binary Search Tree
Rotate List
Binary Search
Serialize and Deserialize BST
Minimum Number of Arrows to Burst Balloons
Remove Duplicate Letters
Buddy Strings
Sort List
House Robber II
Rotate Array
Search a 2D Matrix
Repeated DNA Sequences
Best Time to Buy and Sell Stock IV
Minimum Domino Rotations For Equal Row
Clone Graph
Asteroid Collision
Minimum Depth of Binary Tree
132 Pattern
Bag of Tokens
Stone Game IV
Champagne Tower
Linked List Cycle II
Summary Ranges
Maximize Distance to Closest Person
Number of Longest Increasing Subsequence
Recover Binary Search Tree