Vector.java

//Module of a vector
Vector<Integer> moduleVector = new Vector<Integer>(10);
for (int i = 0; i < 10; i++) {
	moduleVector.add(randInt(-100, 100));
}
		
double module = 0;
for (Integer i : moduleVector) {
	module += Math.pow(i, 2);
}
module = Math.sqrt(module);

//Vector with Iterator
Vector<Integer> marks = new Vector<Integer>();
	for (int i = 0; i < 10; i++) {
	  marks.add(randInt(-100, 100));		
	}
		
	Iterator<Integer> iterator = marks.iterator();
	while(iterator.hasNext()) {
		System.out.println(iterator.next());
	}
		
//Random number
public Integer randInt(int min, int max) {
	Random r = new Random();
	return r.nextInt((max-min) +1 ) + min;
}