共有 70 篇文章
2023
22. Generate Parentheses - Medium
14. Longest Common Prefix - Easy
424. Longest Repeating Character Replacement - Medium
394. Decode String - Medium
692. Top K Frequent Words - Medium
211. Design Add and Search Words Data Structure - Medium
49. Group Anagrams - Medium
844. Backspace String Compare - Easy
13. Roman to Integer - Easy
20. Valid Parentheses — 一樣是兩周前的題目,還是WA