Answered: function

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

(C Language) Given a main program that reads the number of one word names followed by the list of names, complete the recursive function PrintAllPermutations() to list all ways people can line up for a photo (all permutations of an array of strings). Function PrintAllPermutations() takes 4 parameters: an array of a permutation of names, the number of names in the array of the permutation of names, an array of available names, and the number of names in the array of available names. Function PrintAllPermutations() then creates and outputs all possible orderings of those names separated by a comma, one ordering per line.

Given a main program that reads the number of one word names followed by the list of names, complete the recursive function
PrintAllPermutations() to list all ways people can line up for a photo (all permutations of an array of strings). Function
PrintAllPermutations() takes 4 parameters: an array of a permutation of names, the number of names in the array of the permutation of
names, an array of available names, and the number of names in the array of available names. Function PrintAllPermutations() then creates
and outputs all possible orderings of those names separated by a comma, one ordering per line.
When the input is:
3 Julia Lucas Mia
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
1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <string.h>
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5 const int MAX_NAME_SIZE = 50;
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7 // TODO: Write function to create and output all permutations of the list of names.
8 void PrintAllPermutations (char **permList, int permSize, char **nameList, int nameSize) {
9}
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11 int main(void) {
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int size;
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int i = 0;
char name [MAX_NAME_SIZE];
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15 scanf("%d", &size);
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#48722
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25 PrintAllPermutations (permList, 0, nameList, size);
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char *nameList[size];
char *permList[size];
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33 }
for (i = 0; i < size; ++i) {
nameList[i] = (char *)malloc(MAX_NAME_SIZE);
scanf("%s", name);
strcpy(nameList[i], name);
// Free dynamically allocated memory
for (i = 0; i < size; ++i) {
free (nameList[i]);
return 0;

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