Lots of implementation for sbf-cpp.

sbf-cpp/Random.cpp

@@ -0,0 +1,14 @@
+#include <Random.h>
+
+#include <random>
+
+namespace SBF {
+std::random_device g_random_device;
+std::mt19937_64 g_random_number_engine(g_random_device());
+std::uniform_int_distribution<int> g_random_int_generator;
+
+int GetRandomInt(int min, int max) {
+  int r = g_random_int_generator(g_random_number_engine);
+  return r % (max - min + 1) + min;
+}
+}  // End namespace SBF