Add Node class, work on singly LinkedList class and examples

plates/cpp-datastruct/include/lib-datastruct.h

@@ -3,6 +3,33 @@
 
 #include <iostream>
 
+class Node {
+  public:
+    Node() : next(NULL) {};
+    Node(char val) : data(val), next(NULL) {};
+    char data;
+    Node *next;
+};
+
+// Linked list
+
+class LinkedList {
+
+  public:
+    LinkedList() : head(NULL), tail(NULL) {};
+    void Append(char val);
+    void Push(char val);
+    void Remove(char val);
+    void Replace(char remove, char replace);
+    void Display() const;
+    bool isEmpty() const;
+    Node* Find(char val) const;
+  private:
+    Node *head, *tail;
+};
+
+// Array based stack
+
 class StackArray {
   public:
     StackArray() : top(EMPTY) {};
@@ -14,13 +41,6 @@ class StackArray {
 
   private:
     enum { EMPTY=-1, MAX=10 };
-    class Node {
-      public:
-        Node() : next(NULL) {};
-        Node(char val) : data(val), next(NULL) {};
-        char data;
-        Node* next;
-    };
     Node stack[MAX];
     int top;
 };

plates/cpp-datastruct/include/lib-datastruct.h.in

@@ -0,0 +1,8 @@
+// #ifndef LDS_H
+// #define LDS_H
+
+#define DS_VERSION_MINOR @DataStruct_VERSION_MINOR@
+#define DS_VERSION_MAJOR @DataStruct_VERSION_MAJOR@
+#define DS_VERSION @DataStruct_VERSION@
+
+// #endif