算法 题目 出现次数 链接 445. 两数相加 II 2 https://leetcode-cn.com/problems/add-two-numbers-ii 688. “马”在棋盘上的概率 1 https://leetcode-cn.com/problems/knight-probability-in-chessboard 847. 访问所有节点的最短路径 1 https://leetcode-cn.com/problems/shortest-path-visiting-all-nodes 340. 至多包含 K 个不同字符的最长子串 1 https://leetcode-cn.com/problems/longest-substring-with-at-most-k-distinct-characters 827. 最大人工岛 1 https://leetcode-cn.com/problems/making-a-large-island 1254. 统计封闭岛屿的数目 1 https://leetcode-cn.com/problems/number-of-closed-islands 582. 杀死进程 1 https://leetcode-cn.com/problems/kill-process 773. 滑动谜题 1 https://leetcode-cn.com/problems/sliding-puzzle 83. 删除排序链表中的重复元素 1 https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list 207. 课程表 1 https://leetcode-cn.com/problems/course-schedule 33. 搜索旋转排序数组 1 https://leetcode-cn.com/problems/search-in-rotated-sorted-array 543. 二叉树的直径 1 https://leetcode-cn.com/problems/diameter-of-binary-tree 692. 前K个高频单词 1 https://leetcode-cn.com/problems/top-k-frequent-words 剑指 Offer 22. 链表中倒数第k个节点 1 https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof 424. 替换后的最长重复字符 1 https://leetcode-cn.com/problems/longest-repeating-character-replacement 200. 岛屿数量 1 https://leetcode-cn.com/problems/number-of-islands 25. K 个一组翻转链表 1 https://leetcode-cn.com/problems/reverse-nodes-in-k-group 225. 用队列实现栈 1 https://leetcode-cn.com/problems/implement-stack-using-queues