✨ ADD DS_3_x_string

DataStructure/DS_3_String/DS_3_2_LString.cpp

@@ -0,0 +1,12 @@
+//
+// Created by kim yang on 2020/8/8.
+//
+
+//链式存储
+#include <stdio.h>
+
+typedef struct StringNode{
+    char ch;//每个结点存1个字符,存储密度低，每个字符1B，每个指针4B
+    struct StringNode *next;
+}StringNode,*String;
+