1072. Flip Columns For Maximum Number of Equal Rows

class Solution {
    public int maxEqualRowsAfterFlips(int[][] matrix) 
    {

        int m = matrix.length;
        int n = matrix[0].length;
        int result = 0;
        int[] flip = new int[n];
        HashSet<Integer> visited = new HashSet<>();

        for(int i = 0; i < m; i++) 
        {
            if(visited.contains(i))
            {
                continue;
            }
            int count = 0;
            for(int j = 0; j < n; j++)
            {
                flip[j] = 1 ^ matrix[i][j];
            }
            for(int k = 0; k < m; k++)
            {
                if (Arrays.equals(matrix[k], matrix[i]) || Arrays.equals(matrix[k], flip)) 
                {
                    visited.add(k);
                    count++;
                }
                result = Math.max(result, count);
            }
        }

        return result;

        
    }
}