_1582.java

package com.fishercoder.solutions;

public class _1582 {
    public static class Solution1 {
        public int numSpecial(int[][] mat) {
            int count = 0;
            for (int i = 0; i < mat.length; i++) {
                for (int j = 0; j < mat[0].length; j++) {
                    if (mat[i][j] == 1 && isSpecial(mat, i, j)) {
                        count++;
                    }
                }
            }
            return count;
        }

        private boolean isSpecial(int[][] mat, int row, int col) {
            for (int i = 0; i < mat.length; i++) {
                if (i != row && mat[i][col] == 1) {
                    return false;
                }
            }
            for (int j = 0; j < mat[0].length; j++) {
                if (j != col && mat[row][j] == 1) {
                    return false;
                }
            }
            return true;
        }
    }
}