595. Big Countries There is a table World +-----------------+------------+------------+--------------+---------------+ | name | continent | area | population | gdp | +-----------------+------------+------------+--------------+---------------+ | Afgha…

There is a table World +-----------------+------------+------------+--------------+---------------+ | name | continent | area | population | gdp | +-----------------+------------+------------+--------------+---------------+ | Afghanistan | Asia | 652…

题目标签: 题目给了我们一个 world table,让我们找出 面积大于3 million square km 或者 人口大于 25 million. 直接用两个条件搜索. Java Solution: Runtime:  257 ms, faster than 37 % Memory Usage: N/A 完成日期:07/02/2019 关键点:n/a # Write your MySQL query statement below SELECT name, population, area…

原文作者:aircraft 原文链接:https://www.cnblogs.com/DOMLX/p/11089327.html 已经刷了很多篇leetcode题了,不过最近在找c++的实习工作(大佬们有推荐的吗QAQ),现在慢慢补上吧 虽然有点烦,但是还是要提一句,刷leetcode题目的时候,最好还是自己先思考然后写出一个通过的代码,再去看其他人的代码参考比较好,当然了,写不出来就当我没说.尽力而为即可. 一.反转字符串 编写一个函数,其作用是将输入的字符串反转过来.输入字符串以字符数组 c…

我们常见的一些主要的数据结构比方整型int或者浮点型float由于位数过多无法用内置类型存储,这时候我们就须要自己实现高精度的数据类型来进行存储和运算.这样的问题在实际产品中还是比較有用的,所以相对来说也是面试中的常客.LeetCode中关于高精度的题目有下面几道:Add BinaryAdd Two NumbersPlus OneMultiply Strings Add Binary和Add Two Numbers是同一类型的题目,都是高精度中的加法运算,仅仅是一个是二进制的,一个是十进制的,事…

There is a table World +-----------------+------------+------------+--------------+---------------+ | name | continent | area | population | gdp | +-----------------+------------+------------+--------------+---------------+ | Afghanistan | Asia | 652…

会在近期陆续地完成数组篇的整理,希望对找工作的小伙伴有所帮助.   1.Two Sum:两数相加为一固定值,求其下标.一次遍历数组,用一个hash表存储已经访问过的数及其下标,对于新访问的数value,查hash表中是否有target-value的值,如果有,程序输出,如果没有,继续访问下一个数直到访问完.   public int[] twoSum(int[] nums, int target) { Map<Integer, Integer> hash = new HashMap<&g…

Combine Two Tables Table: Person +-------------+---------+ | Column Name | Type | +-------------+---------+ | PersonId | int | | FirstName | varchar | | LastName | varchar | +-------------+---------+ PersonId is the primary key column for this table.…

7.Reverse Integer Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: Output: Example 2: Input: - Output: - Example 3: Input: Output: Note:Assume we are dealing with an environment which could only hold integers within the…

1.Two Sum Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. Example: Given nums = [2,…