1 files changed, 14 insertions, 0 deletions

@@ -6,6 +6,20 @@ public:
     static void SetSeed(int seed);
     static int RandInt(int min, int max);
 
+    template <typename T>
+    static std::vector<T> SelectFromSet(std::vector<T> set, size_t count) {
+        size_t setSize = set.size();
+        assert(count < setSize);
+        std::vector<T> selection;
+        for (int i=0; i<count && i<setSize; i++) {
+            int index = Random::RandInt(0, static_cast<int>(setSize - 1));
+            selection.emplace_back(set[index]);
+            set[index] = set[setSize-1];
+            setSize--;
+        }
+        return selection;
+    }
+
 private:
     static uint32_t s_seed;
 };