LeetCode_Algorithms

The solution to problems in LeetCode Algorithms.

Array

Problems	Solutions	Tags
Two Sum	Swift
3Sum	Swift	Two Pointers
3Sum Closest	Swift
Median of Two Sorted Arrays	Swift
Container With Most Water	Swift
Remove Element	Swift	Two Pointers
Search Insert Position	Swift	Binary Search
Search in Rotated Sorted Array	Swift	Binary Search
Search in Rotated Sorted Array II	Swift	Binary Search
Find First and Last Position of Element in Sorted Array	Swift	Binary Search
Best Time to Buy and Sell Stock II	Swift	Greedy
Jump Game	Swift	Greedy
Maximum Subarray	Swift	Divide and Conquer、Dynamic Programming
Unique Paths	Swift	Dynamic Programming
Plus One	Swift	Math
Rotate Image	Swift
Merge Intervals	Swift	Sort
Combination Sum	Swift	Backtracking
Combination Sum II	Swift	Backtracking
Next Permutation	Swift
Subsets	Swift	Backtrcking、Bit Manipulation
Subsets II	Swift	Backtrcking
Set Matrix Zeroes	Swift
Spiral Matrix	Swift
Spiral Matrix II	Swift
Sort Colors	Swift | JavaScript | C++	Two Pointers、Sort
Minimum Path Sum	Swift	Dynamic Programming
Search a 2D Matrix	Swift	Binary Search
Remove Duplicates from Sorted Array	Swift	Two Pointers
Remove Duplicates from Sorted Array II	Swift	Two Pointers
Best Time to Buy and Sell Stock	Swift	Dynamic Programming
Merge Sorted Array	Swift	Two Pointers
Contains Duplicate	Swift	Hash Table
Word Search	Swift	Backtracking
Pascal's Triangle	Swift

String

Problems	Solutions	Tags
Longest Substring Without Repeating Characters	Swift | C++	Hash Table、Two Pointers
Longest Palindromic Substring	Swift
Longest Common Prefix	Swift
ZigZag Conversion	Swift
String to Integer (atoi)	Swift
Generate Parentheses	Swift	Backtracking
Implement strStr()	Swift	Two Pointers
Count and Say	Swift
Letter Combinations of a Phone Number	Swift	Backtracking
Decode Ways	Swift	Dynamic Programming
Length of Last Word	Swift

Linked List

Problems	Solutions	Tags
Add Two Numbers	Swift
Swap Nodes in Pairs	Swift
Remove Nth Node From End of List	Swift	Two Pointers
Remove Duplicates from Sorted List	Swift
Remove Duplicates from Sorted List II	Swift
Reverse Nodes in k-Group	C++
Remove Nth Node From End of List	C++	Two Pointer
Reverse Linked List	Swift | C++
Reverse Linked List II	Swift
Merge k Sorted Lists	Swift	Divide and Conquer、Heap
Linked List Cycle	C++	Two Pointers
Linked List Cycle II	C++	Two Pointers
Sort List	Swift	Sort

Stack

Problems	Solutions	Tags
Valid Parentheses	Swift
Daily Temperatures	C++	Stack、Hash Table

Tree

Problems	Solutions	Tags
Same Tree	Swift	DFS
Symmetric Tree	Swift	DFS、BFS
Lowest Common Ancestor of a Binary Search Tree	C++
Binary Tree Preorder Traversal	Swift	Stack
Binary Tree Inorder Traversal	Swift	Stack
Binary Tree Preorder Traversal	Swift	Stack
Balanced Binary Tree	C++	DFS
Validate Binary Search Tree	Swift	DFS
Binary Tree Level Order Traversal	Swift	BFS
Maximum Depth of Binary Tree	Swift	DFS
Path Sum	Swift	DFS

Math

Problems	Solutions	Tags
Reverse Integer	Swift
Palindrome Number	Swift
Roman to Integer	Swift
Integer to Roman	Swift
Add Binary	Swift	String
Pow(x, n)	Swift	Binary Search
Sqrt(x)	Swift	Binary Search

Backtracking

Problems	Solutions	Tags
Permutations	Swift
Permutations II	Swift
Permutation Sequence	Swift	Math
Combinations	Swift

Hash Table

Problems	Solutions
Valid Sudoku	Swift
Group Anagrams	Swift

Dynamic Programming

Problems	Solutions
House Robber	Swift
Climbing Stairs	Swift

Divide and Conquer

Problems	Solutions	Tags
Kth Largest Element in an Array	Swift	Heap

Bit Manipulation

Problems	Solutions	Tags
Reverse Bits	C++