Anjan Dutta

Leet Code 977: Squares of a Sorted Array

Problem statement:

Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order.

Constraints

1 <= nums.length <= 104
-104 <= nums[i] <= 104
nums is sorted in non-decreasing order.

Soultion:

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var sortedSquares = function(nums) {
    let l = 0;
    let r = nums.length-1;
    let arr = [];
    for(let i = nums.length-1; i>=0; i--) {
        const ml = nums[l]*nums[l];
        const mr = nums[r]*nums[r];
        if(ml>mr) {
            arr[i] = ml;
            l++;
        } else {
            arr[i] = mr;
            r--;
        }
    }
    return arr;
};