siavava / leetcode

My playground for trying out different coding challenges.

LeetCode Challenges

#	Title	Solution	Difficulty	Categories
1	Two Sum	Python	Easy	Array, Hash Table
2	Add Two Numbers	Python	Medium	Linked List, Math
3	Longest Substring Without Repeating Characters	Python	Medium	Hash Table, Two Pointers, String, Sliding Window
5	Longest Palindromic Substring	Python	Medium	String, DP
6	ZigZag Conversion	Python	Medium	String
7	Reverse Integer	Python	Medium	Math
8	String to Integer (atoi)	Python	Medium	Math, String
9	Palindrome Number	Python	Easy	Math
14	Longest Common Prefix	Python	Easy	String
15	3Sum	Python	Medium	Array, Two Pointers
17	Letter Combinations of a Phone Number	Python	Medium	String, Backtracking
19	Remove Nth Node From End of List	Python	Medium	Linked List, Two Pointers
20	Valid Parentheses	Python	Easy	String, Stack
22	Generate Parentheses	Python	Medium	String, Backtracking, DP
23	Merge k Sorted Lists	Python	Hard	Linked List, Divide and Conquer, Heap
28	Implement strStr()	Python	Easy	Two Pointers, String
35	Search Insert Position	Python	Easy	Array, Binary Search