CHALLENGE

ACTIVITY

$2\mathrm{.}7\mathrm{.}2$: Recursive exploration of all possibilities.

$5225623578194.q3zqy7$

Jump to level $1$

Integer listSize is read from input, then listSize strings are read from input and stored in ArrayList namesToPick. arrangeNames$(0)$ counts and outputs all possible orderings of names in remainNames. Complete the arrangeNames $0$ base case to increment the value of timescounted and output the following:

each element of pickedNames followed by a space

$"$: Number"

the value of timesCounted

End with a newline. Then, return the value of timesCounted for the base case.

Click here for example

import java.util.Scanner;

import java.util.Arraylist;

public class Names $\{$

public static int arrangeNames$($ArrayList$i==0$