Update some contents of String.h

Author: bitdove

data-structures/Array/README.md

@@ -1,5 +1,11 @@
 # 数组
 
+## 静态数组
+
 ![数组](./assets/array.png)
 
-![Vector](./assets/vector.png)
+## 动态数组
+
+![Vector](./assets/vector.png)
+
+## 字符串

data-structures/Array/__test__/test_Array.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 #include "../include/Array.h"
 #include "../include/Vector.h"
+#include "../include/String.h"
 
 void test_array(){
   std::cout << "*****Array Test Begin*****" << std::endl;

data-structures/Array/include/String.h

@@ -6,12 +6,21 @@
 class String{
   public:
     String();
+    String(const String& str);
+    String(const String& str, size_t pos, size_t len);
+    String(const char* s);
+    String(size_t n, const char c);
+    String& operator=(const String& str);
+    String& operator=(const char* s);
+    String& operator=(char c);
     ~String();
   public:
     // Capacity
     bool empty() const;
     size_t size() const;
     size_t length() const;
+    size_t capacity() const;
+    void reserve(const size_t n);
     void resize(size_t n);
     void clear();
     void shrink_to_fit();
@@ -24,6 +33,17 @@ class String{
     String& operator+=(const String& str);
     String& operator+=(const char *s);
     String& operator+=(const char c);
+    String& append (const String& str);
+    String& append (const String& str, const size_t subpos, const size_t sublen);
+    String& append (const char* s);
+    String& append (const char* s, const size_t n);
+    String& append (const size_t n, const char c);
+    void push_back (const char c);
+    String& insert (const size_t pos, const String& str);
+    String& insert (const size_t pos, const String& str, const size_t subpos, const size_t sublen);
+    String& insert (const size_t pos, const char* s);
+    String& insert (const size_t pos, const char c);
+    String& insert (const size_t pos, const size_t n, const char c);
   private:
     Vector<char> _data;
 };