Package g0301_0400.s0363_max_sum_of_rectangle_no_larger_than_k

Class Solution

java.lang.Object
g0301_0400.s0363_max_sum_of_rectangle_no_larger_than_k.Solution
public class Solution extends java.lang.Object
363 - Max Sum of Rectangle No Larger Than K.

Hard

Given an m x n matrix matrix and an integer k, return the max sum of a rectangle in the matrix such that its sum is no larger than k.

It is guaranteed that there will be a rectangle with a sum no larger than k.

Example 1:

Input: matrix = [[1,0,1],[0,-2,3]], k = 2

Output: 2

Explanation: Because the sum of the blue rectangle [[0, 1], [-2, 3]] is 2, and 2 is the max number no larger than k (k = 2).

Example 2:

Input: matrix = [[2,2,-1]], k = 3

Output: 3

Constraints:

  • m == matrix.length
  • n == matrix[i].length
  • 1 <= m, n <= 100
  • -100 <= matrix[i][j] <= 100
  • -105 <= k <= 105

Follow up: What if the number of rows is much larger than the number of columns?

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    maxSumSubmatrix(int[][] matrix, int k)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • maxSumSubmatrix

      public int maxSumSubmatrix(int[][] matrix, int k)