1 files changed, 46 insertions, 0 deletions
diff --git a/string/strfry.c b/string/strfry.c
new file mode 100644
index 0000000..c885f66
--- /dev/null
+++ b/string/strfry.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+char *
+DEFUN(strfry, (string), char *string)
+{
+  static int init = 0;
+  size_t len, i;
+
+  if (!init)
+    {
+      srand (time ((time_t *) NULL));
+      init = 1;
+    }
+
+  len = strlen (string);
+  for (i = 0; i < len; ++i)
+    {
+      size_t j = rand () % len;
+      char c = string[i];
+      string[i] = string[j];
+      string[j] = c;
+    }
+
+  return string;
+}