LeetCode 75

1768. Merge Strings Alternately

Two Pointers String Easy

1071. Greatest Common Divisor of Strings

Math String Easy

1431. Kids With the Greatest Number of Candies

Array Easy

605. Can Place Flowers

Array Greedy Easy

345. Reverse Vowels of a String

Two Pointers String Easy

151. Reverse Words in a String

Two Pointers String Medium

238. Product of Array Except Self

Array Prefix Sum Medium

334. Increasing Triplet Subsequence

Array Greedy Medium

443. String Compression

Two Pointers String Medium

283. Move Zeroes

Array Two Pointers Easy

392. Is Subsequence

Two Pointers String Dynamic Programming Easy

11. Container With Most Water

Array Two Pointers Greedy Medium

1679. Max Number of K-Sum Pairs

Array Hash Table Two Pointers Sorting Medium

643. Maximum Average Subarray I

Array Sliding Window Easy

1456. Maximum Number of Vowels in a Substring of Given Length

String Sliding Window Medium

1004. Max Consecutive Ones III

Array Binary Search Sliding Window Prefix Sum Medium

1493. Longest Subarray of 1's After Deleting One Element

Array Dynamic Programming Sliding Window Medium

1732. Find the Highest Altitude

Array Prefix Sum Easy

724. Find Pivot Index

Array Prefix Sum Easy

2215. Find the Difference of Two Arrays

Array Hash Table Easy

1207. Unique Number of Occurrences

Array Hash Table Easy

1657. Determine if Two Strings Are Close

Hash Table String Sorting Counting Medium

2352. Equal Row and Column Pairs

Array Hash Table Matrix Simulation Medium

2390. Removing Stars From a String

String Stack Simulation Medium

735. Asteroid Collision

Array Stack Simulation Medium

394. Decode String

String Stack Recursion Medium

933. Number of Recent Calls

Design Queue Data Stream Easy

649. Dota2 Senate

String Greedy Queue Medium

2095. Delete the Middle Node of a Linked List

Linked List Two Pointers Medium

328. Odd Even Linked List

Linked List Medium

206. Reverse Linked List

Linked List Recursion Easy

2130. Maximum Twin Sum of a Linked List

Linked List Two Pointers Stack Medium

104. Maximum Depth of Binary Tree

Tree Depth-First Search Breadth-First Search Binary Tree Easy

872. Leaf-Similar Trees

Tree Depth-First Search Binary Tree Easy

1448. Count Good Nodes in Binary Tree

Tree Depth-First Search Breadth-First Search Binary Tree Medium

437. Path Sum III

Tree Depth-First Search Binary Tree Medium

1372. Longest ZigZag Path in a Binary Tree

Dynamic Programming Tree Depth-First Search Binary Tree Medium

236. Lowest Common Ancestor of a Binary Tree

Tree Depth-First Search Binary Tree Medium

199. Binary Tree Right Side View

Tree Depth-First Search Breadth-First Search Binary Tree Medium

1161. Maximum Level Sum of a Binary Tree

Tree Depth-First Search Breadth-First Search Binary Tree Medium

700. Search in a Binary Search Tree

Tree Binary Search Tree Binary Tree Easy

450. Delete Node in a BST

Tree Binary Search Tree Binary Tree Medium

841. Keys and Rooms

Depth-First Search Breadth-First Search Graph Medium

547. Number of Provinces

Depth-First Search Breadth-First Search Union Find Graph Medium

1466. Reorder Routes to Make All Paths Lead to the City Zero

Depth-First Search Breadth-First Search Graph Medium

1926. Nearest Exit from Entrance in Maze

Array Breadth-First Search Matrix Medium

994. Rotting Oranges

Array Breadth-First Search Matrix Medium

215. Kth Largest Element in an Array

Array Divide and Conquer Sorting Heap (Priority Queue) Quickselect Medium

2336. Smallest Number in Infinite Set

Hash Table Design Heap (Priority Queue) Ordered Set Medium

2542. Maximum Subsequence Score

Array Greedy Sorting Heap (Priority Queue) Medium

2462. Total Cost to Hire K Workers

Array Two Pointers Heap (Priority Queue) Simulation Medium

374. Guess Number Higher or Lower

Binary Search Interactive Easy

2300. Successful Pairs of Spells and Potions

Array Two Pointers Binary Search Sorting Medium

162. Find Peak Element

Array Binary Search Medium

17. Letter Combinations of a Phone Number

Hash Table String Backtracking Medium

1137. N-th Tribonacci Number

Math Dynamic Programming Memoization Easy

746. Min Cost Climbing Stairs

Array Dynamic Programming Easy