In an alien language, surprisingly they also use english lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters. Given a sequence of words written in the alien language, and the order…

problem 953. Verifying an Alien Dictionary solution: class Solution { public: bool isAlienSorted(vector<string>& words, string order) { unordered_map<char, int> alien_order; ; i<order.size(); i++) { alien_order[order[i]-'a'] = i; } for(…

原题链接在这里:https://leetcode.com/problems/verifying-an-alien-dictionary/ 题目: In an alien language, surprisingly they also use english lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters…

题目要求 In an alien language, surprisingly they also use english lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters. Given a sequence of words written in the alien language, and the o…

题目标签:HashMap 题目给了我们一个 order 和 words array,让我们依照order 来判断 words array 是否排序. 利用hashmap 把order 存入 map, 写一个helper method 来判断每临近的两个 word 是否排序正确. 遍历words array,依次比较临近的两个words. 具体看code. Java Solution: Runtime: 5 ms, faster than 64.55% Memory Usage: 38.2 MB,…

题目如下: In an alien language, surprisingly they also use english lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters. Given a sequence of words written in the alien language, and the …

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/contest/weekly-contest-114/problems/verifying-an-alien-dictionary/ 题目描述 In an alien language, surprisingly they also use english lowercase letters,…

2019-11-24 22:11:30 953. Verifying an Alien Dictionary 问题描述: 问题求解: 这种问题有一种解法是建立新的排序和abc排序的映射,将这里的string转成正常的string,然后再使用字符串比较即可. 总的来说还是有点巧妙的. public boolean isAlienSorted(String[] words, String order) { int n = words.length; Map<Character, Character>…

In an alien language, surprisingly they also use english lowercase letters, but possibly in a different order. The order of the alphabet is some permutation of lowercase letters. Given a sequence of words written in the alien language, and the order …

这是悦乐书的第364次更新,第392篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第226题(顺位题号是953).在外语中,令人惊讶的是,他们也使用英文小写字母,但可能使用不同的顺序.字母表的顺序是小写字母的一些排列. 给定用外语编写的单词序列以及字母表的顺序,当且仅当给定单词在这种外来语言中按字典排序时才返回true. 例1: 输入:words = ["hello","leetcode"],order ="hlabcdefg…

某种外星语也使用英文小写字母,但可能顺序 order 不同.字母表的顺序(order)是一些小写字母的排列. 给定一组用外星语书写的单词 words,以及其字母表的顺序 order,只有当给定的单词在这种外星语中按字典序排列时,返回 true:否则,返回 false. 示例 1: 输入:words = ["hello","leetcode"], order = "hlabcdefgijkmnopqrstuvwxyz" 输出:true 解释:在该语…

Alien Dictionary There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new lang…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the…

题目: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, wherewords are sorted lexicographically by the rules of this new language. Derive t…

［抄题］: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new langu…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the…

原题链接在这里:https://leetcode.com/problems/alien-dictionary/ 题目: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, wherewords are sorted lexic…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of words from the dictionary, where words are sorted lexicographically by the rules of this new language. Derive the…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language. D…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language. D…

There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are sorted lexicographically by the rules of this new language. D…

原题链接在这里:https://leetcode.com/problems/alien-dictionary/ 题目: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empty words from the dictionary, where words are s…

955. Delete Columns to Make Sorted II We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we delete all the characters in those indices. For example, if w…

Hash Table基础 哈希表(Hash Table)是常用的数据结构,其运用哈希函数(hash function)实现映射,内部使用开放定址.拉链法等方式解决哈希冲突,使得读写时间复杂度平均为O(1). HashMap(std::unordered_map).HashSet(std::unordered_set)的原理与Hash Table一样,它们的用途广泛.用法灵活,接下来侧重于介绍它们的应用. 相关LeetCode题: 706. Design HashMap  题解  705. Des…

请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift    说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序        号 题名Title 难度     Difficulty  两数之…

Contest 111 (题号941-944)(2019年1月19日,补充题解,主要是943题) 链接:https://leetcode.com/contest/weekly-contest-111 [941]Valid Mountain Array(第一题 3分)(google tag) 判断一个数组是不是 Mountain 数组. Mountain 数组的定义是 A.length >= 3There exists some i with 0 < i < A.length - 1 su…

突然很想刷刷题,LeetCode是一个不错的选择,忽略了输入输出,更好的突出了算法,省去了不少时间. dalao们发现了任何错误,或是代码无法通过,或是有更好的解法,或是有任何疑问和建议的话,可以在对应的随笔下面评论区留言,我会及时处理,在此谢过了. 过程或许会很漫长,也很痛苦,慢慢来吧. 编号 题名 过题率 难度 1 Two Sum 0.376 Easy 2 Add Two Numbers 0.285 Medium 3 Longest Substring Without Repeating C…

接上一篇:http://www.cnblogs.com/charlesblc/p/6283064.html 继续过Hard模式的题目吧.   # Title Editorial Acceptance Difficulty Frequency   . 65 Valid Number     12.6% Hard    . 126 Word Ladder II     13.6% Hard    . 149 Max Points on a Line     15.6% Hard    . 146 L…