1、二分法查找代码如下: 1publicclassSolution {2publicbooleansearchMatrix(int[][] matrix,inttarget) {3if(matrix==null|| matrix.length==0 || matrix[0].length==0)4returnfalse;56intm =matrix.length;7intn = matrix[0].length;89intstart = 0;10intend = m*n-1;1112while(start<=end){13int...
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 from left to right. The first integer of each row is greater than the last integer of the previous row. ...
来自专栏 · LeetCode 每日一题 题意 给定一个 m * n 的整数矩阵 matrix ,每一行从左到右升序,每一行的第一个数字比上一行的最后一个数字大,判断 target 是否在这个矩阵中? 数据限制 m == matrix.length n == matrix[i].length 1 <= m, n <= 100 -(10 ^ 4) <= matrix[i][j], target <...
bool searchMatrix(vector<vector<int> > &matrix, int target) { if(matrix.size() == 0) return false; int m = matrix.size(); int n = matrix[0].size(); if(target < matrix[0][0] || target > matrix[m-1][n-1]) //目标元素不在矩阵中 return false; int low = 0, high = m ...
这个问题可以作为问题 74 找到。在 Leetcode 上搜索 2D矩阵。 问题 编写一个在 m x n 整数矩阵矩阵中搜索值目标的高效算法。 该矩阵具有以下性质: 每行中的整数从左到右排序。 每行的第一个整数大于前一行的最后一个整数。 示例1: Input: matrix = [[1,3,5,7],[10,11,16,20],[23,30,34,60]]...
建议和leetcode 378. Kth Smallest Element in a Sorted Matrix 和 leetcode 668. Kth Smallest Number in Multiplication Table 有序矩阵搜索 代码如下: /* * 右上角搜索 * */ class Solution { public boolean searchMatrix(int[][] matrix, int target) ...
https://leetcode.com/problems/search-a-2d-matrix-ii/description/ 题解一 九章算法提供的比较巧妙的解题思路,从matrix 左下角开始向右上角遍历, 初始: introwIndex=matrix.length-1;intcolIndex=0; 逻辑主体: ifcurrentItem == target, return true; ...
Solution1 Code: classSolution1{publicbooleansearchMatrix(int[][]matrix,inttarget){if(matrix==null||matrix.length<1||matrix[0].length<1){returnfalse;}introw=0;intcol=matrix[0].length-1;while(col>=0&&row<=matrix.length-1){if(target==matrix[row][col]){returntrue;}elseif(target<matrix...
240. 搜索二维矩阵 II - 编写一个高效的算法来搜索 m x n 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。 示例 1: [https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2020/11
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