LeetCode 11: Container With Most Water Solution

Master LeetCode problem 11 (Container With Most Water), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

11. Container With Most Water

Medium

Array Two Pointers Greedy

Problem Explanation

Explanation

To solve this problem, we can use a two-pointer approach. The idea is to start with two pointers at the beginning and end of the array. Calculate the area between these two lines (based on the minimum height of the two lines and the distance between them). Then, move the pointer with the smaller height towards the other pointer, as this might potentially increase the area. Repeat this process until the two pointers meet.

The time complexity of this approach is O(n) where n is the number of elements in the input array. The space complexity is O(1) as we are using only a constant amount of extra space.

Solution Code

class Solution {
    public int maxArea(int[] height) {
        int maxArea = 0;
        int left = 0, right = height.length - 1;

        while (left < right) {
            int currentArea = (right - left) * Math.min(height[left], height[right]);
            maxArea = Math.max(maxArea, currentArea);

            if (height[left] < height[right]) {
                left++;
            } else {
                right--;
            }
        }

        return maxArea;
    }
}

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