Welcome to LeetSolve as a Doc!

Hi! It’s Nhut.

This document acts as an archive for LeetSolve blog. The articles are grouped by topic here.

See also

• My Book The Problem Solver’s Guide To Coding.

• My homepage.

Data Structures

• Array
  • Transpose Matrix
  • Valid Mountain Array
  • Shift 2D Grid
  • Find All Numbers Disappeared in an Array
  • Rotate Image
  • Spiral Matrix II
  • Daily Temperatures
• Linked List
  • Merge Two Sorted Lists
  • Remove Linked List Elements
  • Intersection of Two Linked Lists
  • Swap Nodes in Pairs
  • Add Two Numbers
• Hash Table
  • Roman to Integer
  • Maximum Erasure Value
  • Find and Replace Pattern
• String
  • Valid Anagram
  • Detect Capital
  • Unique Morse Code Words
  • Unique Email Addresses
  • Longest Substring Without Repeating Characters
  • Compare Version Numbers
• Stack
  • Baseball Game
  • Valid Parentheses
  • Backspace String Compare
  • Remove All Adjacent Duplicates in String II
• Priority Queue (Heap)
  • Last Stone Weight
  • Kth Largest Element in a Stream
  • Kth Smallest Element in a Sorted Matrix
  • Construct Target Array With Multiple Sums
• Binary Tree
  • Same Tree
  • Maximum Depth of Binary Tree
  • Lowest Common Ancestor of a Binary Search Tree
  • Search in a Binary Search Tree

Algorithms

• Sorting
  • Majority Element
  • Merge Sorted Array
  • Remove Covered Intervals
  • My Calendar I
  • Remove Duplicates from Sorted Array II
• Greedy Algorithm
  • Can Place Flowers
  • Minimum Deletions to Make Character Frequencies Unique
  • Wiggle Subsequence
  • Partitioning Into Minimum Number Of Deci-Binary Numbers
  • Maximum Units on a Truck
• Dynamic Programming
  • Fibonacci Number
  • Unique Paths
  • Largest Divisible Subset
  • Triangle
  • Unique Paths II
• Counting
  • Single Number
  • First Unique Character in a String
  • Max Number of K-Sum Pairs
• Prefix Sums
  • Running Sum of 1d Array
  • Maximum Subarray
  • Product of Array Except Self
  • Subarray Sum Equals K
• Two Pointers
  • Middle of the Linked List
  • Linked List Cycle
  • Sort Array By Parity II
  • Container With Most Water
  • Remove Nth Node From End of List
  • Shortest Unsorted Continuous Subarray
• Bit Manipulation
  • Hamming Distance
  • Power of Four
  • Find the Duplicate Number
  • Maximum Product of Word Lengths
• Graph
  • Is Graph Bipartite?
  • All Paths From Source to Target

Mathematics

• Mathematics
  • Excel Sheet Column Number
  • Power of Three
  • Best Time to Buy and Sell Stock
  • Subsets
  • Minimum Moves to Equal Array Elements II
  • Array Nesting
  • Count Sorted Vowel Strings
  • Concatenation of Consecutive Binary Numbers
  • Perfect Squares