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`.