Package g1701_1800.s1738_find_kth_largest_xor_coordinate_value

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    1738 - Find Kth Largest XOR Coordinate Value.

    Medium

    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 <code>k<sup>th</sup></code> 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.

    Constraints:

    • m == matrix.length

    • n == matrix[i].length

    • 1 &lt;= m, n &lt;= 1000

    • <code>0 <= matrixj<= 10<sup>6</sup></code>

    • 1 &lt;= k &lt;= m * n

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer kthLargestValue(Array<IntArray> matrix, Integer k)

      • Methods inherited from class java.lang.Object

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