## Question 1
What is the maximum amount of water that would be trapped for the following given input?

heights = [0, 1, 2, 0, 1, 3] 
### Options

1. 7
Incorrect

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2. 3
Correct
The maximum rainwater will be trapped between bar **2** and bar **3**.

2 units between bar **2** and bar **1**.

1 unit between bar **1** and bar **3**.
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3. 6
Incorrect

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4. 5
Incorrect

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## Question 2
What is the maximum amount of water that would be trapped for the following given input?

heights = [0, 1, 3, 1, 0, 1, 4, 0, 2] 
### Options

1. 9
Correct
The maximum rainwater will be trapped between bar **3** and bar **2**.

7 units between bar **3** and bar **4**.

2 units between bar **4** and bar **2**.
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2. 12
Incorrect

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3. 18
Incorrect

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4. 6
Incorrect

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## Question 3
Among the given elevation heights, which set of heights could potentially result in a maximum of $7$ units of trapped water?
### Options

1.  [1, 3, 1, 0, 1, 4, 0, 2]
Incorrect

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2. [0, 1, 4, 0, 2]
Incorrect

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3. [3, 1, 0, 1, 4]
Correct
The maximum rainwater will be trapped between bar **3** and bar **4**.

7 units between bar **3** and bar **4**.

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4. [4, 1, 0, 2]
Incorrect

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