1738. Find Kth Largest XOR Coordinate Value
https://leetcode.com/problems/find-kth-largest-xor-coordinate-value
Description
You are given a 2D matrix
of size m x n
, consisting of non-negative integers. You are also given an integer k
.
The value of coordinate (a, b)
of the matrix is the XOR of all matrix[i][j]
where 0 <= i <= a < m
and 0 <= j <= b < n
(0-indexed).
Find the kth
largest value (1-indexed) of all the coordinates of matrix
.
Example 1:
**Input:** matrix = [[5,2],[1,6]], k = 1
**Output:** 7
**Explanation:** The value of coordinate (0,1) is 5 XOR 2 = 7, which is the largest value.
Example 2:
**Input:** matrix = [[5,2],[1,6]], k = 2
**Output:** 5
**Explanation:** The value of coordinate (0,0) is 5 = 5, which is the 2nd largest value.
Example 3:
**Input:** matrix = [[5,2],[1,6]], k = 3
**Output:** 4
**Explanation:** The value of coordinate (1,0) is 5 XOR 1 = 4, which is the 3rd largest value.
Example 4:
**Input:** matrix = [[5,2],[1,6]], k = 4
**Output:** 0
**Explanation:** The value of coordinate (1,1) is 5 XOR 2 XOR 1 XOR 6 = 0, which is the 4th largest value.
Constraints:
m == matrix.length
n == matrix[i].length
1 <= m, n <= 1000
0 <= matrix[i][j] <= 106
1 <= k <= m * n
ac
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