import java.util.Arrays;
public class Main {
public static void main(String[] args) {
float[] f1 = new float[] { 3.1f, 2.1f, 5.1f, 4.1f, 1.1f };
for (float f: f1){
System.out.print(" " + f);
}
Arrays.sort(f1);
for (float f: f1){
System.out.print(" " + f);
}
float[] f2 = new float[] { 5.1f, 2.1f, 3.1f, 1.1f, 4.1f };
Arrays.sort(f2, 1, 4);
for (float f: f2){
System.out.print(" " + f);
}
}
}