//Each item without link is Algorithm of BOJ(https://www.acmicpc.net/)
1.Dynamic Programming
2.Greedy Algorithm
3.DFS&BFS
4.Stack
5.Index Tree
6.Network-Flow
7.Math
8.Backtracking
9.Brute-Force
10.Lis(Longest Increasing Subsequence)
11.Sorting
12.Binary Search
13.Topological Sort
14.String
15.SW Expert Academy(https://swexpertacademy.com)
16.Programmers_Algrorithm(https://programmers.co.kr/)
17.Programmers_SQL(https://programmers.co.kr/)
18.etc(Competition. ex.KAKAO Blind Test)