Package g1001_1100.s1072_flip_columns_for_maximum_number_of_equal_rows

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    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.

    • 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 maxEqualRowsAfterFlips(Array<IntArray> matrix)

      • Methods inherited from class java.lang.Object

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