maxArea.js

/**
You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]).

Find two lines that together with the x-axis form a container, such that the container contains the most water.

Return the maximum amount of water a container can store.

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

* @param {number[]} height
* @return {number}
*/
var maxArea = function (height) {
  let left = 0;
  let right = height.length - 1;
  let maximumArea = 0;

  while (left < right) {
    let length = Math.min(height[left], height[right]);
    let width = right - left;
    let area = length * width;

    maximumArea = Math.max(maximumArea, area);

    // Move the pointer pointing to the shorter line
    if (height[left] < height[right]) {
      left++;
    } else {
      right--;
    }
  }

  return maximumArea;
};