Given integers n and k, find the lexicographically k-th smallest integer in the range from 1 to n. Note: 1 ≤ k ≤ n ≤ 109. Example: Input: n: 13 k: 2 Output: 10 Explanation: The lexicographical order is [1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9], so…

Given integers n and k, find the lexicographically k-th smallest integer in the range from 1 to n. Note: 1 ≤ k ≤ n ≤ 109. Example: Input: n: 13 k: 2 Output: 10 Explanation: The lexicographical order is [1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9], so…

给定整数 n 和 k,找到 1 到 n 中字典序第 k 小的数字.注意:1 ≤ k ≤ n ≤ 109.示例 :输入:n: 13   k: 2输出:10解释:字典序的排列是 [1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9],所以第二小的数字是 10.详见:https://leetcode.com/problems/k-th-smallest-in-lexicographical-order/description/ C++: class Solution {…

https://leetcode.com/problems/k-th-smallest-in-lexicographical-order/ 我没做出来.还是脑子不够清醒. 下面这个解法真的很棒很棒. https://discuss.leetcode.com/topic/64442/easy-to-understand-js-solution 原理可以参照下面这个看,就更清楚了 https://discuss.leetcode.com/topic/64462/c-python-0ms-o-log-…

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…

先过一下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 LRU Cache     16.0% Hard    . 68 Text Justification  …

  # 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 LRU Cache     16.0% Hard    . 68 Text Justification     18.1% Hard    …

源代码地址:https://github.com/hopebo/hopelee 语言:C++ 301. Remove Invalid Parentheses Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other tha…

[20]Valid Parentheses (2018年11月28日,复习, ko) 给了一个字符串判断是不是合法的括号配对. 题解:直接stack class Solution { public: bool isValid(string s) { set<char> st{'(', '[', '{'}; map<char, char> mp{{'(', ')'}, {'{', '}'}, {'[', ']'}}; stack<char> stk; for (auto…

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 477 Total Hamming Distance 44.10% Meidum 475 Heaters  30.20% Easy 474 Ones and Zeroes  34.90% Meidum 473 Matchsticks to Square  31.80% Medium 472 Concatenated Words 29.20% Hard…

Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your result is the smallest in lexicographical order among all possible results. Example: Given "bcabc&q…

Remove Duplicate Letters I Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. Example: Given "bcabc"Return "abc" Given "cbacdcbc"Return "abcd&qu…

Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappeared. In this mysterious island, Lara finds a tomb with a very heavy door. To open the do…

时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappeared. In this mysterious island, Lara finds a tomb…

Tomb Raider https://hihocoder.com/problemset/problem/1829?sid=1394836 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where…

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…

任意门:http://hihocoder.com/problemset/problem/1829 Tomb Raider 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her fath…

题目2 : Tomb Raider 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappeared. In this mysterious island,…

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…

http://www.cnblogs.com/charlesblc/p/6372971.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 LRU Ca…

接上一篇:http://www.cnblogs.com/charlesblc/p/6364102.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…

http://www.cnblogs.com/charlesblc/p/6384132.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 LRU Ca…

http://www.cnblogs.com/charlesblc/p/6384132.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 LRU Ca…

  # 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 LRU Cache     16.0% Hard    . 68 Text Justification     18.1% Hard    …

  # 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 LRU Cache     16.0% Hard    . 68 Text Justification     18.1% Hard    …

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

# Title Solution Acceptance Difficulty Frequency     4 Median of Two Sorted Arrays       27.2% Hard     10 Regular Expression Matching       25.6% Hard     23 Merge k Sorted Lists       35.8% Hard     25 Reverse Nodes in k-Group       37.7% Hard    …

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 如果各位看官们,大神们发现了任何错误,或是代码无法通过OJ,或是有更好的解法,或是有任何疑问,意见和建议的话,请一定要在对应的帖子下面评论区留言告知博主啊(如果不方便注册博客园的话,可以下载下文提到的APP,在Feedback中给博主发邮件交流哈),同时也请大家踊跃地,大量地,盲目地提供各个题目的follow up一起讨论哈,多谢多谢,祝大家刷得愉快…

据我们所知,有‘已知的已知’,有些事,我们知道我们知道:我们也知道,有 ‘已知的未知’,也就是说,有些事,我们现在知道我们不知道.但是,同样存在‘不知的不知’——有些事,我们不知道我们不知道. 上一章中分类和回归都属于监督学习.当目标值是未知时,需要使用非监督学习,非监督学习不会学习如何预测目标值.但是,它可以学习数据的结构并找出相似输入的群组,或者学习哪些输入类型可能出现,哪些类型不可能出现. 5.1 异常检测 异常检测常用于检测欺诈.网络攻击.服务器及传感设备故障.在这些应用中,我们要能够找…

题意就是区间第k大…… 题解: 前段时间用主席树搞掉了…… 如今看到划分树,是在想来写一遍,结果18号对着学长的代码调了一上午连样例都没过,好桑心…… 今天在做NOI2010超级钢琴,忽然发现用划分树很直观,果断决定再战划分树 对着网上的c++代码抄了一遍,A了,可是这编程复杂度有点高,忽然又看见盾哥的代码 很简短,和我原先的代码差不多,他怎么能A了呢……(后来发现区间第k小,我却写的第k大……sb啊) 考虑到盾哥的程序用到了离散化,因此没有考虑存在两个数相等的情况,这样就使代码减少很多 我报着…