🔥LeetCode Daily🔥

Daily Challenges

• Add Binary
• Two Sum
• Add Two Numbers
• Add To Array Form Of Integer
• Maximum Depth of Binary Tree
• Minimum Distance Between BST Nodes
• Invert Binary Tree
• Binary Tree Zigzag Level Order Traversal
• Single Element in a Sorted Array
• Capacity To Ship Packages Within D Days
• IPO
• Minimize Deviation in Array
• Best Time to Buy and Sell Stock
• Edit Distance
• Construct Quad Tree
• Sort an Array
• String Compression
• Find the Index of the First Occurrence in a String
• Count Subarrays With Fixed Bounds
• Jump Game IV
• Kth Missing Positive Number
• Minimum Time to Complete Trips
• Koko Eating Bananas
• Linked List Cycle II
• Linked List Random Node
• Convert Sorted List to Binary Search Tree
• Merge k Sorted Lists
• Symmetric Tree
• Sum Root to Leaf Numbers
• Check Completeness of a Binary Tree
• Construct Binary Tree from Inorder and Postorder Traversal
• Implement Trie (Prefix Tree)
• Design Browser History
• Design Add and Search Words Data Structure
• Can Place Flowers
• Number of Zero-Filled Subarrays
• Minimum Score of a Path Between Two Cities
• Number Of Operations To Make Network Connected
• Reorder Routes to Make All Paths Lead to the City Zero
• Count Unreachable Pairs of Nodes in an Undirected Graph
• Longest Cycle in a Graph
• Minimum Path Sum
• Minimum Cost For Tickets
• Reducing Dishes
• Scramble String
• Number of Ways of Cutting a Pizza
• Successful Pairs of Spells and Potions
• Boats to Save People
• Optimal Partition of String
• Minimize Maximum of Array
• Number of Closed Islands
• Number of Enclaves
• Clone Graph
• Largest Color Value in a Directed Graph
• Valid Parantheses
• Removing Stars From a String
• Simplify Path
• Validate Stack Sequences
• Longest Palindromic Subsequence
• Maximum Value of K Coins From Piles
• Number of Ways to Form a Target String Given a Dictionary
• Kids With the Greatest Number of Candies
• Merge Strings Alternately
• Longest ZigZag Path in a Binary Tree
• Maximum Width of Binary Tree
• Profitable Schemes
• Minimum Insertion Steps to Make a String Palindrome
• Restore The Array
• Smallest Number in Infinite Set
• Add Digits
• Bulb Switcher
• Similar String Groups
• Checking Existence of Edge Length Limited Paths
• Remove Max Number of Edges to Keep Graph Fully Traversable
• Sign of the Product of an array
• Dota2 Senate
• Maximum Number of Vowels in a Substring of Given Length
• Number of Subsequences That Satisfy the Given Sum Condition
• Find the Longest Valid Obstacle Course at Each Position
• Matrix Diagonal Sum
• Spiral Matrix
• Spiral Matrix II
• Uncrossed Lines
• Solving Questions With Brainpower
• Count Ways To Build Good Strings
• Maximize Score After N Operations
• Swapping Nodes in A Linked List
• Swap Nodes in Pairs
• Maximum Twin Sum of a Linked List
• Minimum Number of Vertices to Reach All Nodes
• Is Graph Bipartite ?
• Evaluate Division
• Shortest Bridge
• Top K Frequent Elements
• Kth Largest Element in a Stream
• Maximum Subsequence Score
• New 21 Game
• Stone Game II
• Stone Game III
• Min Cost to Cut a Stick
• Desgin Parking System
• Design HashSet
• Design Underground System
• Shortest Path in Binary Matrix
• Detonate the Maximum Bombs
• Time Needed to Inform All Employees
• Number of Provinces
• Check If It Is a Straight Line
• Can Make Arithmetic Progression From Sequence
• Minimum Flips to Make a OR b Equal to c
• Count Negative Numbers in a Sorted Matrix
• Find Smallest Letter Greater Than Target
• Maximum Value at a Given Index in a Bounded Array
• Snapshot Array
• Summary Ranges
• Equal Row and Column Pair
• Minimum Absolute Difference in BST
• Maximum Level Sum of a Binary Tree
• Number of Ways to Reorder Array to Get Same BST
• Make Array Strictly Increasing
• Number of Increasing Paths in a Grid
• Find the Highest Altitude
• K Radius Subarray Averages
• Minimum Cost to Make Array Equal
• Best Time to Buy and Sell Stock with Transaction Fee
• Longest Arithmetic Subsequence
• Tallest Billboard
• Count All Possible Routes
• Total Cost to Hire K Workers
• Find K Pairs with Smallest Sums
• Path With Maximum Probability
• Shortest Path to Get All Keys
• Last Day Where You Can Still Cross
• Fair Distribution of Cookies
• Maximum Number of Achievable Transfer Requests
• Buddy Strings
• Single Number II
• Longest Subarray of 1's After Deleting One Element
• Minimum Size Subarray Sum
• Maximize the Confusion of an Exam
• Put Marbles in Bags
• Substring With Largest Variance

Algorithms

1️⃣ Algorithm I

• Day 1

  • Binary Search
  • First Bad Version
  • Search Insert Position

• Day 2

  • Squares Of A Sorted Array
  • Rotate Array

• Day 3

  • Move Zeroes
  • Two Sum II - Array is Sorted

• Day 4

  • Reverse String
  • Reverse Words in a String III

• Day 5

  • Middle of the Linked List
  • Remove Nth Node From End of List

• Day 6

  • Longest Substring Without Repeating Characters
  • Permutation in String

• Day 7

  • Flood Fill
  • Max Area of Island

• Day 8

  • Merge Two Binary Trees
  • Populating Next Right Pointers in Each Node

• Day 9

  • 01 Matrix
  • Rotting Oranges

• Day 10

  • Merge Two Sorted Lists
  • Reverse Linked List

• Day 11

  • Combinations
  • Permutations
  • Letter Case Permutation

• Day 12

  • Climbing Stairs
  • House Robber
  • Triangle

• Day 13

  • Power Of Two
  • Number Of 1 Bits

• Day 14

  • Reverse Bits
  • Single Number

LeetCode 75

• Prefix Sum (Day 1)

  • Running Sum of 1d Array
  • Find Pivot Index

• String (Day 2)

  • Isomorphic Strings
  • Is Subsequence

• Linked List (Day 3)

  • Merge Two Sorted Lists
  • Reverse Linked List

• Linked List (Day 4)

  • Middle of the Linked List
  • Linked List Cycle II

• Greedy (Day 5)

  • Best Time to Buy and Sell Stock
  • Longest Palindrome

• Tree (Day 6)

  • N-ary Tree Preorder Traversal
  • Binary Tree Level Order Traversal

• Binary Search (Day 7)

  • Binary Search
  • First Bad Version

• Binary Search Tree (Day 8)

  • Validate Binary Search Tree
  • Lowest Common Ancestor of a Binary Search Tree

• Graph/BFS/DFS (Day 9)

  • Flood Fill
  • Number of Islands

• Dynamic Programming (Day 10)

  • Fibonacci Number
  • Climbing Stairs

• Dynamic Programming (Day 11)

  • Min Cost Climbing Stairs
  • Unique Paths

• Sliding Window/Two Pointer (Day 12)

  • Find All Anagrams in a String
  • Longest Repeating Character Replacement

• Hashmap (Day 13)

  • Two Sum
  • Bulls and Cows

• Stack (Day 14)

  • Backspace String Compare
  • Decode String

• Heap (Day 15)

  • Last Stone Weight
  • Top K Frequent Words

SQL

• Select (Day 1)

  • Big Countries
  • Customers Who never Order
  • Find Customer Referee
  • Recyclable and Low Fat Products

• Select & Order (Day 2)

  • Calculate Special Bonus
  • Swap Salary
  • Delete Duplicate Emails

• String Processing Functions (Day 3)

  • Fix Names in a Table
  • Group Sold Products By The Date
  • Patients With a Condition

• Union & Select (Day 4)

  • Employees With Missing Information
  • Rearrange Products Table
  • Tree Node
  • Second Highest Salary

• Union (Day 5)

  • Combine Two Tables
  • Customer Who Visited but Did Not Make Any Transactions
  • Article Views I

• Union (Day 6)

  • Rising Temperature
  • Sales Person

• Function (Day 7)

  • User Activity for the Past 30 Days I
  • Daily Leads and Partners
  • Find Followers Count

• Function (Day 8)

  • Customer Placing the Largest Number of Orders
  • Game Play Analysis I
  • The Latest Login in 2020
  • Find Total Time Spent by Each Employee

• Control of Flow (Day 9)

  • Capital Gain/Loss
  • Top Travellers
  • Market Analysis I

• Where (Day 10)

  • Duplicate Emails
  • Actors and Directors Who Cooperated At Least Three Times
  • Bank Account Summary II
  • Sales Analysis III

Extra

• Median of Two Sorted Arrays
• Number of Matching Subsequences
• Roman to Integer
• Function Composition
• Curry
• Promise Time Limit
• Promise Pool
• Cache With Time Limit
• Debounce
• Throttle
• JSON Deep Equal
• Differences Between Two Objects
• Array Prototype Last
• Call Function with Custom Context
• Event Emitter