Leecode record 1351 negative numbers in statistical ordered matrix

topic

To give you one m * n Matrix grid, The elements of a matrix, whether by row or column , All in non increasing order .

Please count and return grid in negative Number of .

Example 1：

Input ：grid = [[4,3,2,-1],[3,2,1,-1],[1,1,-1,-2],[-1,-1,-2,-3]]
Output ：8
explain ： Common matrix 8 Negative numbers .
Example 2：

Input ：grid = [[3,2],[1,0]]
Output ：0
Example 3：

Input ：grid = [[1,-1],[-1,-1]]
Output ：3
Example 4：

Input ：grid = [[-1]]
Output ：1

Tips ：

m == grid.length
n == grid[i].length
1 <= m, n <= 100
-100 <= grid[i][j] <= 100

answer

class Solution {
    
    public int countNegatives(int[][] grid) {
    
        int count = 0;
        for(int i = 0; i < grid.length; i++)
        {
    
            for (int j = 0; j < grid[i].length ; j++)
            {
    
                if(grid[i][j] < 0) 
                {
    
                    count += grid[i].length - j;
                    break;
                }
            }
        }
        return count;
    }
}