public class Main {
public static void main(String[] args) {
int[] a = {1,5,8,4,6,2,1};
for (int i = 0; i < a.length - 1; i++) {
for (int j = 0; j < a.length - i - 1; j++) {
int temp;
if (a[j] > a[j + 1]) {
temp = a[j + 1];
a[j + 1] = a[j];
a[j] = temp;
}
}
}
for (int i : a) {
System.out.println(i);
}
}
}