Changeset 259 for trunk/src/gslapi_utility.cc

Timestamp:

Mar 4, 2005, 2:09:55 AM (17 years ago)

Author:

Jari Häkkinen

Message:

Moved out shuffle from vecotr class.

File:

• trunk/src/gslapi_utility.cc (modified) (2 diffs)

trunk/src/gslapi_utility.cc

@@ -4 +4 @@
 #include <utility>
 
+#include "random_singleton.h"
 #include "vector.h"
 
@@ -26 +27 @@
   }
 
+
+
+  void shuffle(vector& invec)
+  {
+    vector vec(invec);
+    theplu::cpptools::random_singleton* 
+      rnd=theplu::cpptools::random_singleton::get_instance();
+    for (size_t i=0; i<vec.size(); i++){
+      size_t index = rnd->get_uniform_int(vec.size()-i);
+      invec[i]=vec(index);
+      vec(index)=vec(vec.size()-i-1);
+    }
+  }
+
 }} // of namespace gslapi and namespace thep