코딩테스트
https://velog.io/@alex01/%EB%82%98%EB%A8%B8%EC%A7%80%EA%B0%80-1%EC%9D%B4-%EB%90%98%EB%8A%94-%EC%88%98-%EC%B0%BE%EA%B8%B0
https://velog.io/@alex01/x%EB%A7%8C%ED%81%BC-%EA%B0%84%EA%B2%A9%EC%9D%B4-%EC%9E%88%EB%8A%94-n%EA%B0%9C%EC%9D%98-%EC%88%AB%EC%9E%90
https://velog.io/@alex01/%EC%9E%90%EC%97%B0%EC%88%98-%EB%92%A4%EC%A7%91%EC%96%B4-%EB%B0%B0%EC%97%B4%EB%A1%9C-%EB%A7%8C%EB%93%A4%EA%B8%B0
알고리즘 자료구조
https://velog.io/@alex01/%EC%9E%90%EB%A3%8C%EA%B5%AC%EC%A1%B0