adding cs142 code

2016-04-06 20:45:34 -07:00
parent 552d456d53
commit 8e52ce1982
174 changed files with 14064 additions and 0 deletions
@@ -0,0 +1,92 @@
+#include<string>
+#include <iostream>
+
+#include "cookies.h"
+
+void addOrder(string * cookies[], int * size, string new_name) {
+    string * s = findOrder(cookies, size, new_name);
+    if(s == NULL)
+        s = new string(new_name);
+    cookies[*size] = s;
+    (*size)++;
+}
+
+int deliverOrder(string * cookies[], int * size, string name) {
+    string * s = findOrder(cookies, size, name);
+    if(s == NULL)
+        return 0;
+
+    // interesting note, temp_cookies  gets allocatied  on the stack and (see
+    // note above return)  ...
+    string * temp_cookies [MAXIMUM_SIZE] = {};
+
+    int removes = 0;
+    int temp_pos = 0;
+    for(int i = 0; i < *size; i++) {
+        if(cookies[i] == s) {
+            // pass
+            removes += 1;
+        }
+        else {
+            temp_cookies[temp_pos] = cookies[i];
+            temp_pos++;
+        }
+    }
+
+    // copy from the tmp buffer into the original passed-by-pointer array
+    for(int i = 0; i < temp_pos; i++) {
+        cookies[i] = temp_cookies[i];
+    }
+
+    *size = temp_pos;
+
+    // this removes the memory newed above (in addOrder) from the HEAP
+    delete s;
+
+    // ... temp_cookies (along with removes and temp_pos) gets cleaned up at
+    // this point ... Stack stack stack
+    return removes;
+}
+
+bool modifyOrder(string * cookies[], int * size, string original_name, string new_name) {
+    string * s = findOrder(cookies, size, original_name);
+    if(s == NULL)
+        return false;
+
+    *s = new_name;
+    return true;
+}
+
+string displayOrders(string * cookies[], int * size) {
+    string r;
+    for(int i=0; i < *size; i++) {
+        r += *cookies[i];
+        if(i < *size - 1)
+            r += ", ";
+    }
+	return r;
+}
+
+string * findOrder(string * cookies[], int * size, string name) {
+    string * r = NULL;
+    for(int i=0; i<*size; i++) {
+        if(*cookies[i] == name) {
+            r = cookies[i];
+            break;
+        }
+    }
+    return r;
+}
+
+void clean_up(string * cookies[], int * size) {
+    string * deletable_cookies [MAXIMUM_SIZE] = {};
+    int del_size = 0;
+    for(int i = 0; i < *size; i++) {
+        if(!findOrder(deletable_cookies, &del_size, *cookies[i])) {
+            deletable_cookies[del_size] = cookies[i];
+            del_size++;
+        }
+    }
+    for(int i = 0; i < del_size; i++)
+        delete deletable_cookies[i];
+}