It contains the solutions of Leetcode March Challenge 2021

Link to the contest : Click:triangular_flag_on_post:

Problem Name	Click to open the Problem
Single-Row Keyboard
Distribute Candies
Distribute Candies
Missing Number
Missing Number
Average of Levels in Binary Tree
Short Encoding of Words
Design HashMap
Strobogrammatic Number
Remove Palindromic Subsequences
Remove Palindromic Subsequences
Integer to Roman
Coin Change
Check If a String Contains All Binary Codes of Size K
Binary Trees With Factors
Swapping Nodes in a Linked List
Construct Binary Tree from String
Encode and Decode TinyURL
Best Time to Buy and Sell Stock with Transaction Fee
Generate Random Point in a Circle
Wiggle Subsequence
Keys and Rooms
Design Underground System
Reordered Power of 2
Find Smallest Common Element in All Rows
Vowel Spellchecker
3Sum With Multiplicity
Advantage Shuffle
Pacific Atlantic Water Flow
Word Subsets
Palindromic Substrings
Reconstruct Original Digits from English
Parallel Courses
Flip Binary Tree To Match Preorder Traversal
Russian Doll Envelopes
Stamping The Sequence