0977 - Squares of a Sorted Array

0977 - Squares of a Sorted Array

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

Examples

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].

Input: nums = [-7,-3,2,3,11] Output: [4,9,9,49,121]

Constraints

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

Java Solution

class Solution {
    public int[] sortedSquares(int[] nums) {
        int[] result = new int[nums.length];
        int left = 0;
        int right = nums.length - 1;
        
        for(int i = nums.length - 1; i >= 0; i--) {
            if(Math.abs(nums[left]) < Math.abs(nums[right])) {
                result[i] = nums[right] * nums[right];
                right--;
            } else {
                result[i] = nums[left] * nums[left];
                left++;
            }
        }
        
        return result;
    }
}