Package g1001_1100.s1072_flip_columns_for_maximum_number_of_equal_rows

Class Solution

java.lang.Object
g1001_1100.s1072_flip_columns_for_maximum_number_of_equal_rows.Solution
public class Solution extends Object
1072 - Flip Columns For Maximum Number of Equal Rows.

Medium

You are given an m x n binary matrix matrix.

You can choose any number of columns in the matrix and flip every cell in that column (i.e., Change the value of the cell from 0 to 1 or vice versa).

Return the maximum number of rows that have all values equal after some number of flips.

Example 1:

Input: matrix = [[0,1],[1,1]]

Output: 1

Explanation: After flipping no values, 1 row has all values equal.

Example 2:

Input: matrix = [[0,1],[1,0]]

Output: 2

Explanation: After flipping values in the first column, both rows have equal values.

Example 3:

Input: matrix = [[0,0,0],[0,0,1],[1,1,0]]

Output: 2

Explanation: After flipping values in the first two columns, the last two rows have equal values.

Constraints:

  • m == matrix.length
  • n == matrix[i].length
  • 1 <= m, n <= 300
  • matrix[i][j] is either 0 or 1.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • maxEqualRowsAfterFlips

      public int maxEqualRowsAfterFlips(int[][] matrix)