Can you solve this real interview question? Search a 2D Matrix II - Write an efficient algorithm that searches for a value target in an m x n integer matrix matrix. This matrix has the following properties: * Integers in each row are sorted in ascendin
LeetCode 240. Search a 2D Matrix II 程序员木子 香港浸会大学 数据分析与人工智能硕士在读 来自专栏 · LeetCode Description Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted in ascending ...
if(matrix[middleM][middleN]==target){ return true; }else if(matrix[middleM][middleN]<target){ return searchMatrixHelper(matrix, startM, endM, middleN + 1, endN, target) || searchMatrixHelper(matrix, middleM + 1, endM, startN, middleN, target); }else{ return searchMatrixHelper(mat...
* [240] Search a 2D Matrix II */// @lc code=startclassSolution{public:boolsearchMatrix(vector<vector<int>>& matrix,inttarget){ assert(!matrix.empty() && !matrix[0].empty());intm = matrix.size(), n = matrix[0].size();inti = m -1, j =0;while(i >=0&& j < n) {if(mat...
解法:虽然数组matrix中的每一行都是有序的,但是与Search a 2D matrix不同的是,不满足每行的首个元素比前一行的最后一个元素大;不过对于每一行还是有序的,所以,我们可以利用分治算法,对每一行利用二分查找; Java class Solution { public boolean searchMatrix(int[][] matrix, int target) { ...
leetcode 240. Search a 2D Matrix II 矩阵搜索 + 右上角搜索,Writeanefficientalgorithmthatsearchesforavalueinanmxnmatrix.Thismatrixhasthefollowingproperties:Integersineachrowaresortedinach
* 题目: 240.Search a 2D Matrix II * 网址:https://leetcode.com/problems/search-a-2d-matrix-ii/ * 结果:AC * 来源:LeetCode * 博客: ---*/#include<iostream>#include<vector>#include<stack>usingnamespacestd;classSolution{public:boolsearchMatrix(vector<vector<int>>& matrix,inttarget){if(mat...
/* * @lc app=leetcode id=240 lang=javascript * * [240] Search a 2D Matrix II * * https://leetcode.com/problems/search-a-2d-matrix-ii/description/ * * *//** * @param {number[][]} matrix * @param {number} target * @return {boolean} */var searchMatrix = function (matrix, ...
这道题让我们在一个二维数组中快速的搜索的一个数字,这个二维数组各行各列都是按递增顺序排列的,是之前那道Search a 2D Matrix 搜索一个二维矩阵的延伸,那道题的不同在于每行的第一个数字比上一行的最后一个数字大,是一个整体蛇形递增的数组。所以那道题可以将二维数组展开成一个一位数组用一次二查搜索。而...
题目链接:https://leetcode-cn.com/problems/search-a-2d-matrix-ii 难度:中等 通过率:37.6% 题目描述: 编写一个高效的算法来搜索mxn矩阵 matrix 中的一个目标值 target。该矩阵具有以下特性: 每行的元素从左到右升序排列。 每列的元素从上到下升序排列。