Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that elements beyond the length of the original array are not written. Do the above modifications to the input array in…

problem 1089. Duplicate Zeros 题意: solution: 其中关于虚拟新数组的下标的计算还是有点迷糊... class Solution { public: void duplicateZeros(vector<int>& arr) { int n = arr.size(); ); ; i>=; i--) { if((--m) <n) //err.... { arr[m] = arr[i]; } && (--m) <n)…

题目如下: Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that elements beyond the length of the original array are not written. Do the above modifications to the input arr…

1089. 复写零 1089. Duplicate Zeros 题目描述 给你一个长度固定的整数数组 arr,请你将该数组中出现的每个零都复写一遍,并将其余的元素向右平移. 注意:请不要在超过该数组长度的位置写入元素. 要求:请对输入的数组 就地 进行上述修改,不要从函数返回任何东西. 每日一算法2019/7/14Day 72LeetCode1089. Duplicate Zeros 示例 1: 输入:[1,0,2,3,0,4,5,0] 输出:null 解释:调用函数后,输入的数组将被修改为:[…

这是小川的第392次更新,第423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255题(顺位题号是1089).给定一个固定长度的整数数组arr,复制每次出现的零,将剩余的元素向右移动. 请注意,不会写入超出原始数组长度的元素. 对输入数组进行上述修改,不要从函数返回任何内容. 例如: 输入:[1,0,2,3,0,4,5,0] 输出:null 说明:调用函数后,输入数组被修改为:[1,0,0,2,3,0,0,4] 输入:[1,2,3] 输出:null 说明:调用函…

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…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 这道题跟之前两道Contains Duplicate 包含重复值和Conta…

Given an array of integers and an integer k, return true if and only if there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and j is at most k. (Old Version) Given an array of integers and an i…

Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. 这道题不算难题,就是使用一个哈希表,遍历整个数组,如果哈希表里存在,返回fal…

Write a SQL query to delete all duplicate email entries in a table named Person, keeping only unique emails based on its smallest Id. +----+------------------+ | Id | Email | +----+------------------+ | 1 | john@example.com | | 2 | bob@example.com |…