Add StackArray class

plates/cpp-datastruct/src/lib-datastruct.cpp

@@ -1,3 +1,55 @@
 #include <lib-datastruct.h>
 
+void StackArray::Push(char val)
+{
+  
+  if (top < MAX && !isEmpty()) {
+    this->list[++top].data = val;
+  }
+  else if (isEmpty()) {
+    this->list[++top].data = val;
+  }
+  else {
+    std::cout << "Error: List is full!\n";
+  }
+  return;
+}
+
+char StackArray::Pop() 
+{
+  
+  if (!isEmpty()) {
+    char temp = this->Top();
+    this->top -= 1;
+    return temp;
+  }
+  return '\0';
+}
+
+char StackArray::Top() const
+{
+  return this->list[top].data;
+}
+
+void StackArray::Display() const
+{
+  if (isEmpty()) {
+    std::cout << "Error: Stack is empty\n";
+    return;
+  }
+  
+  int tempTop = this->top;
+  while (tempTop >= 0) {
+    std::cout << "Value at list [" << tempTop << "]: " 
+      << this->list[tempTop].data << std::endl;
+    tempTop--;
+  }
+  
+  return;
+}
+
+bool StackArray::isEmpty() const
+{
+  return this->top <= EMPTY;
+}