Leetcode•Feb 16, 2026
Squares of a Sorted Array
Hazrat Ali
Leetcode
Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order.
Example 1:
Input: nums = [-4,-1,0,3,10] Output: [0,1,9,16,100] Explanation: After squaring, the array becomes [16,1,0,9,100]. After sorting, it becomes [0,1,9,16,100].
Example 2:
Input: nums = [-7,-3,2,3,11] Output: [4,9,9,49,121]
Solution
var sortedSquares = function(nums) {
let n = nums.length;
let result = new Array(n);
let left = 0;
let right = n - 1;
let index = n - 1;
while (left <= right) {
let leftSquare = nums[left] * nums[left];
let rightSquare = nums[right] * nums[right];
if (leftSquare > rightSquare) {
result[index] = leftSquare;
left++;
} else {
result[index] = rightSquare;
right--;
}
index--;
}
return result;
};