Write a recursive method printNumbers3 that takes integers a, b, c, and d prints all combinations that contain b number of a's and d number of c's on separate lines.

For instance, if you called printNumbers3(1, 2, 3, 4) it would print every combination of 2 1's and 4 3's:
113333

131333

133133

133313

133331

311333

313133

313313

313331

331133

331313

331331

333113

333131

333311

If any of the integers are negative, throw an IllegalArgumentException.
Do the code below:

public class PrintNumbers {
public static void printNumbers3(int a, int b, int c, int d) {
if (a < 0 || b < 0 || c < 0 || d < 0) {
throw new IllegalArgumentException();
}
// TODO: Your code here
}
public static void main(String[] args) {
printNumbers3(1, 2, 3, 4);