LeetCode---Search a 2D Matrix II
来源:互联网 发布:体检 知乎 编辑:程序博客网 时间:2024/06/14 02:01
题目大意:给出一个二维数组,判断目标数是否在数组中,数组中元素从左到右一次递增,从上到下一次递增。
算法思想:
1.计算出数组的行数和列数。
2.将目标数和数组中右上角的元素比较,如果目标元素小于该数则说明该数所在列中的元素都大于目标数,应该缩小列数;如果目标数大于该数,则说明该数所在的行中所有的数都大于该数,应该增大行数;如果目标数等于该数,则说明目标数在数组中存在。
代码如下:
class Solution {public: bool searchMatrix(vector<vector<int>>& matrix, int target) { int m=matrix.size(); if(m==0) return false; int n=matrix[0].size(); int row=0,column=n-1; while(row<m&&column>=0){ if(target<matrix[row][column]) --column; else if(target>matrix[row][column]) ++row; else return true; } return false; }};
0 0
- #leetcode#Search a 2D Matrix II
- [LeetCode] Search a 2D Matrix II
- leetcode: Search a 2D Matrix II
- leetcode - Search a 2D Matrix II
- [leetcode] Search a 2D Matrix II
- 【leetcode】Search a 2D Matrix II
- Leetcode: Search a 2D Matrix II
- LeetCode Search a 2D Matrix II
- [Leetcode]Search a 2D Matrix II
- [LeetCode]Search a 2D Matrix II
- LeetCode Search a 2D Matrix II
- [LeetCode]Search a 2D Matrix II
- LeetCode || Search a 2D Matrix II
- LeetCode----Search a 2D Matrix II
- Leetcode: Search a 2D Matrix II
- *LeetCode-Search a 2D Matrix II
- Search a 2D Matrix II -- leetcode
- leetcode | Search a 2D Matrix II
- LINQ中实现not in查询
- Redis服务器搭建/配置/及Jedis客户端的使用方法
- C++标准转换运算符reinterpret_cast
- 在Unity项目中使用Git
- Spring Hello World 实例
- LeetCode---Search a 2D Matrix II
- SQL基础学习2
- eclipse中ant不能智能提示
- C#读写文件中文乱码
- HttpURLConnection Get和Post发送数据
- 内存泄露从入门到精通三部曲之基础知识篇
- Linux小白入门日志
- DUBBO的com.alibaba.dubbo.rpc.RpcException解决方法
- Selenium Webdriver : Element not found in the cache - perhaps the page has changed since it