LeetCode 42: Trapping Rain Water — Step-by-Step Visual Trace

1. 1Read the problem statement carefully and understand the concept of trapping rain water
2. 2Initialize two pointers at the beginning and end of the elevation map array
3. 3Calculate the amount of water that can be trapped at each position using the two-pointer technique
4. 4Compare the height of the left and right pointers and move the pointer with the smaller height towards the other end
5. 5Apply the formula to calculate the trapped water at each position and accumulate the total amount of trapped water

Software engineers and developers can benefit from this tutorial to improve their problem-solving skills and learn how to approach similar problems

💡 Use the two-pointer technique to calculate the amount of water that can be trapped at each position in the elevation map array

🌂 Learn to trap rain water with LeetCode 42! 💡