aloalgoDouble Each Element
Very Easy
You are given an array of integers nums.
Your task is to return a new array where each element is doubled (multiplied by 2).
You may assume that:
- The array may be empty.
Return the new array with each element doubled. The order of elements must be preserved.
Example 1
Input
[1, 2, 3]
Output
[2, 4, 6]
Explanation:
Each element is multiplied by 2: 12=2, 22=4, 3*2=6.
Example 2
Input
[-1, 0, 1]
Output
[-2, 0, 2]
Explanation:
Doubling works for negative numbers and zero as well.
Example 3
Input
[]
Output
[]
Explanation:
An empty array returns an empty array.
Input
[1, 2, 3]
Output
[2, 4, 6]