Write a program that lists all ways people can line up for a photo (all permutations of a list of Strings). The program will read a list of one word names (until -1), and use a recursive method to create and output all possible orderings of those names, one ordering per line. When the input is: Julia Lucas Mia -1 then the output is (must match the below ordering): Julia Lucas Mia Julia Mia Lucas Lucas Julia Mia Lucas Mia Julia Mia Julia Lucas Mia Lucas Julia import java.util.Scanner; import java.util.ArrayList; public class PhotoLineups { // TODO: Write method to create and output all permutations of the list of names. public static void allPermutations(ArrayList permList, ArrayList nameList) { } public static void main(String[] args) { Scanner scnr = new Scanner(System.in); ArrayList nameList = new ArrayList(); ArrayList permList = new ArrayList(); String name; // TODO: Read in a list of names; stop when -1 is read. Then call recursive method. } }
6.9 LAB: All permutations of names
Write a program that lists all ways people can line up for a photo (all permutations of a list of Strings). The program will read a list of one word names (until -1), and use a recursive method to create and output all possible orderings of those names, one ordering per line.
When the input is:
Julia Lucas Mia -1then the output is (must match the below ordering):
Julia Lucas Mia Julia Mia Lucas Lucas Julia Mia Lucas Mia Julia Mia Julia Lucas Mia Lucas Juliaimport java.util.Scanner;
import java.util.ArrayList;
public class PhotoLineups {
// TODO: Write method to create and output all permutations of the list of names.
public static void allPermutations(ArrayList<String> permList, ArrayList<String> nameList) {
}
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
ArrayList<String> nameList = new ArrayList<String>();
ArrayList<String> permList = new ArrayList<String>();
String name;
// TODO: Read in a list of names; stop when -1 is read. Then call recursive method.
}
}
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