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 Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	maxEqualRowsAfterFlips(int[][] matrix)

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

maxEqualRowsAfterFlips

public int maxEqualRowsAfterFlips(int[][] matrix)