Saturday, March 20, 2021

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 the line i is at (i, ai) and (i, 0). Find two lines, which, together with the x-axis forms a container, such that the container contains the most water.

Notice that you may not slant the container.

 

Example 1:

Input: height = [1,8,6,2,5,4,8,3,7]
Output: 49
Explanation: The above vertical lines are represented by array [1,8,6,2,5,4,8,3,7]. In this case, the max area of water (blue section) the container can contain is 49.

Example 2:

Input: height = [1,1]
Output: 1

Example 3:

Input: height = [4,3,2,1,4]
Output: 16

Example 4:

Input: height = [1,2,1]
Output: 2
Solution
public int maxArea(int[] height) {
        int maxArea=0;
        for(int i=0, j=height.length-1; i< j; ) {
            int tempArea = Math.min(height[i],height[j])*(j-i);
            if(tempArea>maxArea) {
                maxArea=tempArea;
            }
            if(height[i]<height[j]) {
                i++;
            }
            else {
                j--;
            }
        }
        return maxArea;
    }

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