Generate ArrayList with Given Size(lintcode 485)

Description

Generate an arrayList with given size, initialize the array list with numbers from 1 to size.

Example

Given size = 4. return an array list that contains numbers from 1 to 4: [1,2,3,4]

Interface

public class Solution {
    /**
     * @param size an integer
     * @return an array list
     */
    public ArrayList<Integer> generate(int size) {
        // Write your code here

    }
}

Solution

public class Solution {
    /**
     * @param size an integer
     * @return an array list
     */
    public ArrayList<Integer> generate(int size) {
        // Write your code here
        ArrayList<Integer> res = new ArrayList<Integer>();
        for (int i = 1; i <= size; ++i) {
            res.add(i);
        }
        return res;
    }
}