Question

I am making a gift exchange program and need assistance with the output.

• How do I make this code leave the first participant (giver) listed the way that the user input the information (example: a, b, c, d, ...), but the second participant (receiver) a random person from the same array (example: d, c, a, b...). I have tried the solution below which is fine other than the participants are not random they are just one-off of the original input.

• The participant should only be a giver and a receiver once.

• The giver and receiver can't be the same person.

The output should be something like this:
a will purchase a gift for d (age: 2)
b will purchase a gift for c (age: 3)
c will purchase a gift for a (age: 4)
d will purchase a gift for b (age: 2)

import java.util.Random;

public class ExchangeResults
{
public static void main(String[] args)
{
UserInput userinput = new UserInput();
Participant[] participants = userinput.inputParticipants();   

System.out.println("Exchange Results");

//PRINT MATCHES
shuffleParticipants(participants);
}

//MAKE RANDOM MATCHES
public static void shuffleParticipants(Participant[] participants)
{
for (int i = 0; i < participants.length-1 ; i++)
{
Participant p1 = participants[i];
Participant p2 = participants[i+1];
System.out.printf("%s will purchase a gift for %s (age: %d)\n",p1.getName(),p2.getName(),p2.getAge());
}
Participant pl = participants[participants.length-1];
Participant p0 = participants[0];
System.out.printf("%s will purchase a gift for %s (age: %d)\n", pl.getName(), p0.getName(), p0.getAge());
}
}