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OddManOut.java
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OddManOut.java
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package oddmanout;
import java.util.ArrayList;
import java.util.Scanner;
public class OddManOut {
public static void main(String[] args) {
Scanner inputScanner = new Scanner(System.in);
String[] guestID;
int cases = Integer.parseInt(inputScanner.nextLine());
ArrayList<String> crossedGuests;
for(int i = 1; i <= cases; i++) {
inputScanner.nextLine(); //String guests =
crossedGuests = new ArrayList<>();
guestID = inputScanner.nextLine().split(" ");
for(String s : guestID) {
if(!crossedGuests.contains(s)) {
crossedGuests.add(s);
} else {
crossedGuests.remove(s);
}
}
System.out.println("Case #" + i + ": " + crossedGuests.get(0));
}
}
}