strfry - randomize a string
#include <string.h>
char *strfry(char *string);
The strfry() function randomizes the contents of string by
using rand(3) to randomly swap characters in the string.
The result is an anagram of string.
The strfry() functions returns a pointer to the randomized
string.
The strfry() function is unique to the Linux C Library and
GNU C Library.
memfrob(3)