Recursively print all sentences that can be formed from list of word lists - GeeksforGeeks

Recursively print all sentences that can be formed from list of word lists - GeeksforGeeks
Given a list of word lists How to print all sentences possible taking one word from a list at a time via recursion?

void printUtil(string arr[R][C], int m, int n, string output[R])

{

    // Add current word to output array

    output[m] = arr[m][n];

    // If this is last word of current output sentence, then print

    // the output sentence

    if (m==R-1)

    {

        for (int i=0; i<R; i++)

           cout << output[i] << " ";

        cout << endl;

        return;

    }

    // Recur for next row

    for (int i=0; i<C; i++)

       if (arr[m+1][i] != "")

          printUtil(arr, m+1, i, output);

}

// A wrapper over printUtil()

void print(string arr[R][C])

{

   // Create an array to store sentence

   string output[R];

   // Consider all words for first row as starting points and

   // print all sentences

   for (int i=0; i<C; i++)

     if (arr[0][i] != "")

        printUtil(arr, 0, i, output);

}

    private static void recursivePrint(String[][] list, String s, int level) {

        if (level == list.length) {

            System.out.println(s);

            return;

        }

        for (int j = 0; j < list[level].length; j++) {

            recursivePrint(list, s + " " + list[level][j], level + 1);

        }

    }

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