I have this sequence of numbers: 1,2,3. (It can be from 1 to infinity.)
I want to add each sequence number to it, for example:
The sequence has 3 numbers.
You need to add it like this:
(1)
1+1=2
1+2=3
1+3=4
(2)
2+1=3
2+2=4
2+3=5
(3)
3+1=4
3+2=5
3+3=6
The program should print the list with the results of each sequence number separately:
1 = (2,3,4)
2 = (3,4,5)
3 = (4.5.6)
I believe this example does what you need. The class receives the list of elements in the constructor. The sum method iterates twice in a nested way from the list and prints the result.
import java.util.ArrayList;
import java.util.List;
public class SomaLista {
private List<Integer> lista = null;
public SomaLista(List<Integer> lista) {
this.lista = lista;
}
public void soma() {
for (Integer externo : lista) {
System.out.print(externo + "=");
List<String> resultado = new ArrayList<String>();
for (Integer interno : lista) {
resultado.add(String.valueOf(interno + externo));
}
System.out.println("("+String.join(",", resultado)+")");
}
}
public static void main(String args[]) {
List<Integer> lista = new ArrayList<Integer>();
for (int i=1; i<=1000000; i++){
lista.add(i);
}
SomaLista sl = new SomaLista(lista);
sl.soma();
}
}