}if(matrix[x][y] ==target)returntrue; } Soltuion2: publicclassSolution {publicbooleansearchMatrix(int[][] matrix,inttarget) {if(matrix ==null)thrownewIllegalArgumentException("the reference of the matrix is null");if(matrix.length == 0 || matrix[0].length == 0)returnfalse;inty = ma...
代码 classSolution {public:boolsearchMatrix(vector<vector<int>>& matrix,inttarget) {if(matrix.size() ==0|| matrix[0].size() ==0)returnfalse; bottom=0, top = matrix[0].size() -1;for(inti =0; i < matrix.size(); ++i) {//对每一行进行二分查找boolf =binSearch(matrix[i], bott...
1classSolution {2public:3boolsearchMatrix(vector<vector<int>>& matrix,inttarget) {4intm = matrix.size(), n = matrix[0].size(), r =0, c = n -1;5while(r < m && c >=0) {6if(matrix[r][c] == target)returntrue;7if(matrix[r][c] > target) c--;8elser++;9}10returnfals...
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) { if (matrix ==...
[CODE] public class Solution { public boolean searchMatrix(int[][] matrix, int target) { if(matrix.length==0 || matrix[0].length==0) return false; int i=0, j=matrix[0].length-1; while(i<matrix.length && j>=0) { int x = matrix[i][j]; ...
Search a 2D Matrix II Split Message Based on Limit 参考资料: https://leetcode.com/problems/search-a-2d-matrix/ https://leetcode.com/problems/search-a-2d-matrix/discuss/26292/Java-clear-solution https://leetcode.com/problems/search-a-2d-matrix/discuss/26220/Don't-treat-it-as-a-2D-matri...
classSolution { privatebooleanfind(int[][] matrix,inti,inttarget){ intleft=0,right=matrix[0].length-1; while(left<=right){ intmid=(left+right)/2; if(matrix[i][mid]==target)returntrue; elseif(matrix[i][mid]<target) left=mid+1; ...
Leetcode之二分法专题-240. 搜索二维矩阵 II(Search a 2D Matrix II) 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。 示例: 现有矩阵 matrix 如下: ...
1"""2Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:3Integers in each row are sorted in ascending from left to right.4Integers in each column are sorted in ascending from top to bottom.5Example:6Consider the following ...
classSolution {publicbooleansearchMatrix(int[][] matrix,inttarget) {inta=matrix.length;if(a==0)returnfalse;intb=matrix[0].length;if(b==0)returnfalse;intcol=b-1;introw=0;while(col>=0&&row<a){if(target==matrix[row][col])returntrue;elseif(target<matrix[row][col]) col--;elserow++...