grade_school: iteration 1

cpp/grade-school/grade_school.cpp

@@ -0,0 +1,35 @@
+#include "grade_school.h"
+
+#include <algorithm>
+
+namespace grade_school {
+
+using namespace std;
+
+static const grade_t empty_grade = grade_t();
+
+
+school::school()
+{
+}
+
+void school::add(const name_t &name, grade_number_t grade_number)
+{
+    grade_t &grade = roster_[grade_number];
+    grade.insert(upper_bound(grade.begin(), grade.end(), name), name);
+}
+
+const grade_t &school::grade(grade_number_t number) const
+{
+    if (roster_.count(number))
+        return roster_.at(number);
+    else
+        return empty_grade;
+}
+
+const roster_t &school::roster() const
+{
+    return roster_;
+}
+
+}