Can you solve this real interview question? Number of Submatrices That Sum to Target - Given a matrix and a target, return the number of non-empty submatrices that sum to target. A submatrix x1, y1, x2, y2 is the set of all cells matrix[x][y] with x1 <=
1classSolution {2func numSubmatrixSumTarget(_ matrix: [[Int]], _ target: Int) ->Int {3ifmatrix.count ==300{4return275395}67let M =matrix.count8let N = matrix[0].count9vardp = [[Int]](repeating:[Int](repeating:0, count: N+1), count: M+1)1011foriin1...M {12forjin1......
[LeetCode] 1074. Number of Submatrices That Sum to Target 元素和为目标值的子矩阵数量 Given amatrixand atarget, return the number of non-empty submatrices that sum to target. A submatrixx1, y1, x2, y2is the set of all cellsmatrix[x][y]withx1 <= x <= x2andy1 <= y <= y2. ...
解法一: classSolution {public:intmaxSumSubmatrix(vector<vector<int>>& matrix,intk) {if(matrix.empty() || matrix[0].empty())return0;intm = matrix.size(), n = matrix[0].size(), res =INT_MIN;intsum[m][n];for(inti =0; i < m; ++i) {for(intj =0; j < n; ++j) {intt ...
Submatrix Sum 2019-12-21 22:23 −Description Given an integer matrix, find a submatrix where the sum of numbers is zero. Your code should return the coordinate of the left-up and ... YuriFLAG 0 224 bzoj3944 Sum 2019-12-25 21:50 −[题目链接](https://lydsy.com/JudgeOnline/problem...
Find k num... YuriFLAG 0 307 Submatrix Sum 2019-12-21 22:23 − Description Given an integer matrix, find a submatrix where the sum of numbers is zero. Your code should return the coordinate of the left-up and ... YuriFLAG 0 224 < 1 > ...
18.12 Given an NxN matrix of positive and negative integers, write code to find the submatrix with the largest possible sum. 这道求和最大的子矩阵,跟LeetCode上的Maximum Size Subarray Sum Equals k和Maximum Subarray很类似。这道题不建议使用brute force的方法,因为实在是不高效,我们需要借鉴上面LeetCode...
If col number is less than row number, we can sum up all values from col i to col j then use 1D array solution. */ Solution: 1publicclassSolution {2publicintmaxSumSubmatrix(int[][] matrix,intk) {3if(matrix.length == 0 || matrix[0].length == 0)4returnInteger.MIN_VALUE;56intres...
Submatrix Sum 2019-12-21 22:23 −Description Given an integer matrix, find a submatrix where the sum of numbers is zero. Your code should return the coordinate of the left-up and ... YuriFLAG 0 224 bzoj3944 Sum 2019-12-25 21:50 −[题目链接](https://lydsy.com/JudgeOnline/problem...
Submatrix Sum 2019-12-21 22:23 −Description Given an integer matrix, find a submatrix where the sum of numbers is zero. Your code should return the coordinate of the left-up and r... YuriFLAG 0 224 Subarray Sum Closest 2019-12-21 22:35 −Description Given an integer array, find ...