363. Max Sum of Rectangle No Larger Than K LeetCode Solution

Max Sum of Rectangle No Larger Than K 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

Max Sum of Rectangle No Larger Than K Solutions

✅Time: O(n)
✅Space: O(n)

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