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 ...
Write an efficient algorithm that searches for a value in anmxnmatrix. 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. For example, Consider the following matrix:...
if (target < matrix[mid][0]) { right = mid; } else if (target > matrix[mid][0]) { left = mid; } else { return true; } } left = 0; right = matrix[0].length - 1; while (left <= right) { //搜索在那一列 mid = left + (right - left) / 2; if (target < matrix[...
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 ...
Write an efficient algorithm that searches for a value in anmxnmatrix. 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. ...
center > target. In this case, we discard zone 4. center == target. return true. Time Complexity: T(nxn) = 3T(n/2 x n/2) => O(3^logN) Space Complexity: O(logN) N = n^n Solution1 Code: classSolution1{publicbooleansearchMatrix(int[][]matrix,inttarget){if(matrix==null||matr...
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties: Integers in each row are sorted in ascending from left to right. Integers in each column are sorted in ascending from top to bottom. ...
This matrix has the following properties: Integers in each row are sorted in ascending from left to right. Integers in each c...【LeetCode】240. Search a 2D Matrix II 240. Search a 2D Matrix II Description: Write an efficient algorithm that searches for a value in an m x n matrix....
在LeetCode 74中,如何优化搜索二维矩阵的时间复杂度? 【原题】 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 in...