Add the initial EN translation for C++ code (#1346)

en/codes/cpp/utils/vertex.hpp

@@ -0,0 +1,36 @@
+/**
+ * File: vertex.hpp
+ * Created Time: 2023-03-02
+ * Author: krahets (krahets@163.com)
+ */
+
+#pragma once
+
+#include <vector>
+
+using namespace std;
+
+/* Vertex class */
+struct Vertex {
+    int val;
+    Vertex(int x) : val(x) {
+    }
+};
+
+/* Input a list of values vals, return a list of vertices vets */
+vector<Vertex *> valsToVets(vector<int> vals) {
+    vector<Vertex *> vets;
+    for (int val : vals) {
+        vets.push_back(new Vertex(val));
+    }
+    return vets;
+}
+
+/* Input a list of vertices vets, return a list of values vals */
+vector<int> vetsToVals(vector<Vertex *> vets) {
+    vector<int> vals;
+    for (Vertex *vet : vets) {
+        vals.push_back(vet->val);
+    }
+    return vals;
+}