Container with most water

containerWithMostWater.js

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

    while (l < r) {
        height[l] < height[r] ? area = height[l] * (r - l) : area = height[r] * (r - l); 
        if(area > maxArea) maxArea = area;
        height[l] < height[r] ? l++ : r--;
    }

    return maxArea;   
};

// 2 pointers, one pointing at the start of the array and another at the end
// Calculate the current area
// If the area is more than the maxArea, then maxArea = area
// Else, More the one with the lesses magnitude 
// ex: if element at left pointer is 2 and element at right pointer is 7 then increase the left pointer 
// Repeat as long as left pointer < right pointer