Container With Most Water

Given n non-negative integers a1, a2, …, an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.

Note: You may not slant the container.

 

public class Solution {
    public int maxArea(int[] height) {
        int left = 0, right = height.length-1; 
        int max = 0; //max area 
        
        while (left < right) {
            int h = Math.min(height[left], height[right]);
            int w = right - left; 
            max = Math.max(max, h*w);
            //important:
            if (height[left] <= height[right]) left++; 
            else right--;  
        }
        return max; 
    }
}

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