LeetCode 75 (In Progress)

Array / String

• 1768. Merge Strings Alternately
• 1071. Greatest Common Divisor of Strings
• 1431. Kids With the Greatest Number of Candies
• 605. Can Place Flowers
• 345. Reverse Vowels of a String
• 151. Reverse Words in a String
• 238. Product of Array Except Self
• 334. Increasing Triplet Subsequence
• 443. String Compression

Two Pointers

• 283. Move Zeroes
• 392. Is Subsequence
• 11. Container With Most Water
• 1679. Max Number of K-Sum Pairs

Sliding Window

• 643. Maximum Average Subarray I
• 1456. Maximum Number of Vowels in a Substring of Given Length
• 1004. Max Consecutive Ones III
• 1493. Longest Subarray of 1's After Deleting One Element

Prefix Sum

• 1732. Find the Highest Altitude
• 724. Find Pivot Index

Hash Map / Set

• 2215. Find the Difference of Two Arrays
• 1207. Unique Number of Occurrences
• 1657. Determine if Two Strings Are Close
• 2352. Equal Row and Column Pairs

Stack

• 2390. Removing Stars From a String
• 735. Asteroid Collision
• 394. Decode String

Queue

• 933. Number of Recent Calls
• 649. Dota2 Senate

Linked List

• 2095. Delete the Middle Node of a Linked List
• 328. Odd Even Linked List
• 206. Reverse Linked Lists
• 2130. Maximum Twin Sum of a Linked List

Binary Tree - DFS

• 104. Maximum Depth of Binary Tree
• 872. Leaf-Similar Trees
• 1448. Count Good Nodes in Binary Tree
• 437. Path Sum III
• 1372. Longest ZigZag Path in a Binary Tree
• 236. Lowest Common Ancestor of a Binary Tree

Binary Tree - BFS

• 199. Binary Tree Right Side View
• 1161. Maximum Level Sum of a Binary Tree

Binary Search Tree

• 700. Search in a Binary Search Tree
• 450. Delete Node in a BST

Graphs - DFS

• 841. Keys and Rooms
• 547. Number of Provinces
• 1466. Reorder Routes to Make All Paths Lead to the City Zero
• 399. Evaluate Division

Graphs - BFS

• 1926. Nearest Exit from Entrance in Maze
• 994. Rotting Oranges

Heap / Priority Queue

• 215. Kth Largest Element in an Array
• 2336. Smallest Number in Infinite Set
• 2542. Maximum Subsequence Score
• 2462. Total Cost to Hire K Workers

Binary Search

• 374. Guess Number Higher or Lower
• 2300. Successful Pairs of Spells and Potions
• 162. Find Peak Element
• 875. Koko Eating Bananas

Backtracking

• 17. Letter Combinations of a Phone Number
• 216. Combination Sum III

DP - 1D

• 1137. N-th Tribonacci Number
• 746. Min Cost Climbing Stairs
• 198. House Robber
• 790. Domino and Tromino Tiling

DP - Multidimensional

• 62. Unique Paths
• 1143. Longest Common Subsequence
• 714. Best Time to Buy and Sell Stock with Transaction Fee
• 72. Edit Distance

Bit Manipulation

• 338. Counting Bits
• 136. Single Number
• 1318. Minimum Flips to Make a OR b Equal to c

Trie

• 208. Implement Trie (Prefix Tree)
• 1268. Search Suggestions System

Intervals

• 435. Non-overlapping Intervals
• 452. Minimum Number of Arrows to Burst Balloons

Monotonic Stack

• 739. Daily Temperatures
• 901. Online Stock Span