LeetCode

LeetCode Algorithm

LeetCode solutions in Java.

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Links

• Web Site

QA List

#	Title	Tag
1	TwoSum	Integer
2	Add Two Numbers	Linked List, Math
3	Longest Substring Without Repeating Characters	Hash Table, String
4	Median of Two Sorted Arrays	Array, Binary Search, Divide and Conquer
5	Longest Palindromic Substring	String
6	ZigZag Conversion	String
7	Reverse Integer	Math
8	String to Integer (atoi)	Math, String
9	Palindrome Number	Math
10	Regular Expression Matching	String, Dynamic Programming, Backtracking
11	Container With Most Water	Array, Two Pointers
12	Integer to Roman	Math, String
13	Roman to Integer	Math, String
14	Longest Common Prefix	String
15	3Sum	Array, Two Pointers
16	3Sum Closest	Array, Two Pointers
17	Letter Combinations of a Phone Number	String, Backtracking
18	4Sum	Array, Hash Table, Two Pointers
19	Remove Nth Node From End of List	Array
20	Valid Parentheses	Array
21	Merge Two Sorted Lists	LinedList
22	Generate Parentheses	Recursion
23	Merge k Sorted Lists	Linked List, Heap
24	Swap Nodes in Pairs	Linked List
25	Reverse Nodes in k-Group	Linked List
26	Remove Duplicates from Sorted Array	Array
27	Remove Element	Array
28	Implement strStr	String, Two Pointers
29	Divide Two Integers	Binary Search
30	Substring with Concatenation of All Words	HashTable, Two Pointers