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import java.lang.reflect.Array;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Scanner;

import java.util.Arrays;

public class ArrayListDemo {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.println("enter how many numbers will be contains in the list:");

int n = Integer.parseInt(input.nextLine());

ArrayList<Integer> data = new ArrayList<>(n);

for (int i = 0; i < n; i++) {

int a = Integer.parseInt(input.nextLine());

data.add(a);

}

System.out.println("Numbers in Collection: " + data);

System.out.println(data);

}

}