Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence.  More specifically, for all even i, A[i] tells us the number of times that…

Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence. More specifically, for all even i, A[i] tells us the number of times that t…

Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence.  More specifically, for all even i, A[i] tells us the number of times that…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/rle-iterator/description/ 题目描述: Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), whe…

题目如下: 解题思路:非常简单的题目,直接递归就行了. 代码如下: class RLEIterator(object): def __init__(self, A): """ :type A: List[int] """ self.l = A[::] def next(self, n): """ :type n: int :rtype: int """ while n > 0 an…

Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence.  More specifically, for all even i, A[i] tells us the number of times that…

Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence.  More specifically, for all even i, A[i] tells us the number of times that…

Given two 1d vectors, implement an iterator to return their elements alternately. Example: Input: v1 = [1,2] v2 = [3,4,5,6] Output: [1,3,2,4,5,6] Explanation: By calling next repeatedly until hasNext returns false,   the order of elements returned by…

Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation -- it essentially peek() at the element that will be returned by the next call to next(). Here is an exampl…

Problem: Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext returns false, the order of elements returned by next…

Write an iterator that iterates through a run-length encoded sequence. The iterator is initialized by RLEIterator(int[] A), where A is a run-length encoding of some sequence.  More specifically, for all even i, A[i] tells us the number of times that…

class Solution { public: char findTheDifference(string s, string t) { map<char,int>Map_Temp; ;i<s.size();i++) Map_Temp[s[i]-'a']++; ;i<t.size();i++) Map_Temp[t[i]-'a']--; map<char,int>::iterator iter; for(iter=Map_Temp.begin();iter!=Map_…

题目如下: Design an Iterator class, which has: A constructor that takes a string characters of sorted distinct lowercase English letters and a number combinationLength as arguments. A function next() that returns the next combination of length combinatio…

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…

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…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 把自己刷过的所有题目做一个整理,并且用简洁的语言概括了一下思路,汇总成了一个表格. 题目的排列顺序是按照先Easy再Medium再Hard排列的,暂时还没有把题目全部整理完成.后序我会把刷过的所有的题目都整理到这个文档里. 题目 难度 解法 题目地址 566. Reshape the Matrix Easy 变长数组,求余法,维护行列计算在新的数组中的位置 https://blog.c…

刷题备忘录,for bug-free leetcode 396. Rotate Function 题意: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k…

刷题备忘录,for bug-free 招行面试题--求无序数组最长连续序列的长度,这里连续指的是值连续--间隔为1,并不是数值的位置连续 问题: 给出一个未排序的整数数组,找出最长的连续元素序列的长度. 如: 给出[100, 4, 200, 1, 3, 2], 最长的连续元素序列是[1, 2, 3, 4].返回它的长度:4. 你的算法必须有O(n)的时间复杂度 . 解法: 初始思路 要找连续的元素,第一反应一般是先把数组排序.但悲剧的是题目中明确要求了O(n)的时间复杂度,要做一次排序,是不能达…

前一段时间比较忙,而且做这个对于我来说挺耗时间的,已经间隔了几期的没做总结了,后面有机会补齐.而且本来做这个的目的就是为了防止长时间不做把编程拉下,不在追求独立作出所有题了.以后完赛后稍微尝试下,做不出来的直接放弃. 第一题:问题 问题:900. RLE 迭代器 编写一个遍历游程编码序列的迭代器. 迭代器由 RLEIterator(int[] A) 初始化,其中 A 是某个序列的游程编码.更具体地,对于所有偶数i,A[i] 告诉我们在序列中重复非负整数值 A[i + 1] 的次数. 迭代器支持一…

Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list -- whose elements may also be integers or other lists. Example 1: Given the list [[1,1],2,[1,1]], By calling next repeatedly until hasN…

Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation -- it essentially peek() at the element that will be returned by the next call to next(). Here is an exampl…

Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext returns false, the order of elements returned by next should b…

Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: next() and hasNext() should run in average O(1) time and uses…

原题链接在这里:https://leetcode.com/problems/zigzag-iterator/ 题目: Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext ret…

原题链接在这里:https://leetcode.com/problems/binary-search-tree-iterator/ Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. N…

原题链接在这里:https://leetcode.com/problems/peeking-iterator/ 题目: Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation -- it essentially peek() at the element that wi…

https://leetcode.com/problems/binary-search-tree-iterator/ Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: nex…

Design and implement a data structure for a compressed string iterator. It should support the following operations: next and hasNext. The given compressed string will be in the form of each letter followed by a positive integer representing the numbe…

Design and implement a data structure for a compressed string iterator. It should support the following operations: next and hasNext. The given compressed string will be in the form of each letter followed by a positive integer representing the numbe…

原题链接在这里:https://leetcode.com/problems/design-compressed-string-iterator/description/ 题目: Design and implement a data structure for a compressed string iterator. It should support the following operations: next and hasNext. The given compressed string…