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Update README for Trapping Rain Water problem.

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Oleksii Trekhleb 2018-07-27 14:11:33 +03:00
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src/algorithms/uncategorized/rain-terraces/README.md
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@ -109,9 +109,12 @@ The concept is illustrated as shown:
**Complexity Analysis** **Complexity Analysis**
Time complexity: `O(n)`. Time complexity: `O(n)`. We store the maximum heights upto a point using 2
iterations of `O(n)` each. We finally update `answer` using the stored
values in `O(n)`.
Auxiliary space complexity: `O(n)` extra space. Auxiliary space complexity: `O(n)` extra space. Additional space
for `left_max` and `right_max` arrays than in Approach 1.
## References ## References