【强化练习】哈希表更多习题

labuladong原创约 13303 字

1. 两数之和 https://leetcode.cn/problems/two-sum

1. Two Sum https://leetcode.com/problems/two-sum

128. 最长连续序列 https://leetcode.cn/problems/longest-consecutive-sequence

128. Longest Consecutive Sequence https://leetcode.com/problems/longest-consecutive-sequence

290. 单词规律 https://leetcode.cn/problems/word-pattern

290. Word Pattern https://leetcode.com/problems/word-pattern

519. 随机翻转矩阵 https://leetcode.cn/problems/random-flip-matrix

519. Random Flip Matrix https://leetcode.com/problems/random-flip-matrix

138. 复制带随机指针的链表 https://leetcode.cn/problems/copy-list-with-random-pointer

138. Copy List with Random Pointer https://leetcode.com/problems/copy-list-with-random-pointer

1490. 克隆 N 叉树 https://leetcode.cn/problems/clone-n-ary-tree

1490. Clone N-ary Tree https://leetcode.com/problems/clone-n-ary-tree

133. 克隆图 https://leetcode.cn/problems/clone-graph

133. Clone Graph https://leetcode.com/problems/clone-graph

242. 有效的字母异位词 https://leetcode.cn/problems/valid-anagram

242. Valid Anagram https://leetcode.com/problems/valid-anagram

49. 字母异位词分组 https://leetcode.cn/problems/group-anagrams

49. Group Anagrams https://leetcode.com/problems/group-anagrams

387. 字符串中的第一个唯一字符 https://leetcode.cn/problems/first-unique-character-in-a-string

387. First Unique Character in a String https://leetcode.com/problems/first-unique-character-in-a-string

169. 多数元素 https://leetcode.cn/problems/majority-element

169. Majority Element https://leetcode.com/problems/majority-element

389. 找不同 https://leetcode.cn/problems/find-the-difference

389. Find the Difference https://leetcode.com/problems/find-the-difference

442. 数组中重复的数据 https://leetcode.cn/problems/find-all-duplicates-in-an-array

442. Find All Duplicates in an Array https://leetcode.com/problems/find-all-duplicates-in-an-array

448. 找到所有数组中消失的数字 https://leetcode.cn/problems/find-all-numbers-disappeared-in-an-array

448. Find All Numbers Disappeared in an Array https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array

前置知识

阅读本文前，你需要先学习：

哈希表在算法题中是常考的数据结构，主要出现在数据结构的设计题，或者配合数组、字符串等结构进行考察（比如之前的前缀和习题），这里列出一些常见的哈希表考题。

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