Class Solution
java.lang.Object
g1301_1400.s1351_count_negative_numbers_in_a_sorted_matrix.Solution
public class Solution
extends java.lang.Object
1351 - Count Negative Numbers in a Sorted Matrix.
Easy
Given a m x n
matrix grid
which is sorted in non-increasing order both row-wise and column-wise, return the number of negative numbers in grid
.
Example 1:
Input: grid = [[4,3,2,-1],[3,2,1,-1],[1,1,-1,-2],[-1,-1,-2,-3]]
Output: 8
Explanation: There are 8 negatives number in the matrix.
Example 2:
Input: grid = [[3,2],[1,0]]
Output: 0
Constraints:
m == grid.length
n == grid[i].length
1 <= m, n <= 100
-100 <= grid[i][j] <= 100
Follow up: Could you find an O(n + m)
solution?
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Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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countNegatives
public int countNegatives(int[][] grid)
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