摘要： 原题链接在这里：https://leetcode.com/problems/decode-string/#/description 题目： Given an encoded string, return it's decoded string. The encoding rule is: k[enc 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/battleships-in-a-board/ 题目： Given an 2D board, count how many battleships are in it. The battleships are represe 阅读全文