This class generates lottery numbers and reads them into an array.
The values contained in the array are then sorted in ascending order.

In the meantime, I’ve been raging like a lunatic on the living room table ­čÖé I followed the wrong approach for 4 hours and then moved on to first reading in, then sorting out. Now it works.

[code]public class LotterynumberenArraySortierung {
public static void main(String[] args) {
// TODO Auto-generated method stub
boolean[] drawnball;
int[] lotterynumbers;
int randomnumber;
int swap;
lotterynumbers= new int[6];
drawnball= new boolean[49];
//Assignment of values to the array
for ( int i =0; i < lotterynumbers.length; i ++){
if (i==0){
randomnumber=(int) (Math.random()*49+1);
lotterynumbers[0]=randomnumber;
drawnball[randomnumber-1]=true;
}
randomnumber=(int) (Math.random()*49+1);
while (drawnball[randomnumber-1]==true){
randomnumber=(int) (Math.random()*49+1);
}
drawnball[randomnumber-1]=true;
lotterynumbers[i] = randomnumber;
}
//Sort the values within the array using a bubble sort-like method
for (int i=0; i < lotterynumbers.length-1; i=i+1) 
for (int c=lotterynumbers.length-1; c > i; c=c-1) 
if (lotterynumbers[c-1] > lotterynumbers[c]) 
{
//The number to be swapped is temporarily stored under the variable swap to free its space.
swap = lotterynumbers[c-1]; 
//Old number is exchanged for new one
lotterynumbers[c-1] = lotterynumbers[c]; 
//swap is used at the rear
lotterynumbers[c] = swap; 
}
// Output of contents
for ( int i =0; i <= 5; i ++){
System.out.println("Lotterynumber " + (i+1) + " ist: " + lotterynumbers[i]);
}
}
}
[/code]