#1457Medium#34 in ServiceNow's list· asked at 6 companies
Pacific Atlantic Water Flow
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What we know
Example 1
Input: heights = [[1,2,2,3,5],[3,2,3,4,4],[2,4,5,3,1],[6,7,1,4,5],[5,1,1,2,4]] Output: [[0,4],[1,3],[1,4],[2,2],[3,0],[3,1],[4,0]]
Example 2
Input: heights = [[1]] Output: [[0,0]]
Constraints
- •
m == heights.length - •
n == heights[r].length - •
1 <= m, n <= 200 - •
0 <= heights[r][c] <= 10^5