ishanbagchi

var a = 12, b = 24;

// destructuring assignment
[ a, b ] = [ b, a ];

// addition and difference - 1
a = a + b;
b = a - b;
a = a - b; 

ishanbagchi

import java.util.Scanner;
import java.util.ArrayList;

public class Fibonacci {
    public static ArrayList<Integer> series(int range) {
        ArrayList<Integer> list = new ArrayList<>();

        list.add(0);
        if (range == 1)
            return list;