Recursion(Java Language) Write a program named NumberPermutation.java and implem

Question

Recursion(Java Language)

Write a program named NumberPermutation.java and implement a recursive method specified below:
public static void permutation(int num)
This method has a positive integer as its parameter and displays all permutations of the odd digits of that length. Display these values in ascending order. For example, if the length is 3, your program should display:
111 113 115 117 119 131 133 135 ... Recursion(Java Language)

Write a program named NumberPermutation.java and implement a recursive method specified below:
public static void permutation(int num)
This method has a positive integer as its parameter and displays all permutations of the odd digits of that length. Display these values in ascending order. For example, if the length is 3, your program should display:
111 113 115 117 119 131 133 135 ... Recursion(Java Language)

Write a program named NumberPermutation.java and implement a recursive method specified below:
public static void permutation(int num)
This method has a positive integer as its parameter and displays all permutations of the odd digits of that length. Display these values in ascending order. For example, if the length is 3, your program should display:
111 113 115 117 119 131 133 135 ...

Explanation / Answer

public class NumberPermutation { public static void permutation(int num, String str) { if(num == 0) { System.out.println(str); } else { for (int i = 1; i < 10; i += 2) { permutation(num - 1, str + i); } } } public static void permutation(int num) { permutation(num, ""); } public static void main(String[] args) { permutation(3); } }

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