百草园

摘要： Unique Word AbbreviationAn abbreviation of a word follows the form . Below are some examples of word abbreviations:a) it --> it ... 阅读全文

摘要： Find the Duplicate NumberGiven an arraynumscontainingn+ 1 integers where each integer is between 1 andn(inclusive), prove that at least one duplicate ... 阅读全文

摘要： Walls and GatesYou are given am x n2D grid initialized with these three possible values.-1- A wall or an obstacle.0- A gate.INF- Infinity means an emp... 阅读全文

摘要： Expression Add OperatorsGiven a string that contains only digits0-9and a target value, return all possibilities to addbinaryoperators (not unary)+,-, ... 阅读全文

摘要： Inorder Successor in BSTGiven a binary search tree and a node in it, find the in-order successor of that node in the BST.Note: If the given node has n... 阅读全文

摘要： Peeking IteratorGiven an Iterator class interface with methods:next()andhasNext(), design and implement a PeekingIterator that support thepeek()operat... 阅读全文

摘要： 最小调整有序题目描述有一个整数数组，请编写一个函数，找出索引m和n，只要将m和n之间的元素排好序，整个数组就是有序的。注意：n-m应该越小越好，也就是说，找出符合条件的最短序列。给定一个int数组A和数组的大小n，请返回一个二元组，代表所求序列的起点和终点。(原序列位置从0开始标号,若原序列有序，返... 阅读全文

摘要： Single Number IIIGiven an array of numbersnums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find t... 阅读全文

摘要： Zigzag IteratorGiven two 1d vectors, implement an iterator to return their elements alternately.For example, given two 1d vectors:v1 = [1, 2]v2 = [3, ... 阅读全文

摘要： Wiggle SortGiven an unsorted arraynums, reorder itin-placesuch thatnums[0] = nums[2] & nums) { 4 int flag = 1; 5 for (int i = 1; i < n... 阅读全文