adding cs235

cs235/exam1/polylist.h

@@ -0,0 +1,31 @@
+//Derek McQuay 647465151 CS 235 Fall 2012 midterm 1
+#ifndef __POLYLIST_H__
+#define __POLYLIST_H__
+#include "PolynomialListInterface.h"
+#include "node.h"
+#include <cctype>
+#include <string>
+#include <sstream>
+#include <vector>
+#include <iostream>
+
+using namespace std;
+
+class polylist : public PolynomialListInterface {
+    public:
+        polylist();
+        ~polylist();
+        node* head;
+        void insert(string term);
+        void clear();
+        string at(int index);
+        int size();
+        string printList();
+        void remove(int exponent);
+        void insertAfter(int exponent, int coefficient, char value, int insertionNodeExponent);
+        void insertTail(int exponent, int coefficient, char value);
+        void insertHead(int exponent, int coefficient, char value);
+};
+vector<string> parse_expression(string expression); //these are included outside of the class because i used them in my test.cpp
+bool is_valid(vector<string> expression);           //and wanted them not to be included in the class
+#endif