Trapping Rain Water

Given an array of

n

non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining. For example, given [0,1,0,2,1,0,1,3,2,1,2,1], the output should be 6. Constraints:

1 \le n \le 2 \times 10^4

0 \le height[i] \le 10^5

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Trapping Rain Water

Given an array of non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining. Example: Input: height = [0,1,0,2,1,0,1,3,2,1,2,1] Output: 6 Constraints: n == height.length 1 <= n <= 2 * 10^4 0 <= height[i] <= 10^5

JavaTwo Pointers

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Trapping Rain Water

JavaTwo Pointers

Read

Trapping Rain Water

Given an array of

n

non-negative integers representing an elevation map where the width of each bar is 1, calculate the total volume of water it can trap after a rainstorm. Example: Input: height = [0,1,0,2,1,0,1,3,2,1,2,1] Output: 6 Explanation: The elevation map is represented by the array. In this case, 6 units of rain water are being trapped. Constraints: