Update

_notebooks/2023-04-26-HW-Rohangroup.ipynb

@@ -361,7 +361,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "metadata": {
     "vscode": {
      "languageId": "java"
@@ -371,51 +371,113 @@
    "source": [
     "// FRQ Array Lists\n",
     "//Part a\n",
-    "public void addMembers(String[] names, int gradYear) {\n",
-    "    for (String name : names) {\n",
-    "        MemberInfo member = new MemberInfo(name, gradYear, true); // Assuming all new members are initially in good standing\n",
-    "        memberList.add(member);\n",
+    "class MemberInfo {\n",
+    "    private String name;\n",
+    "    private int gradYear;\n",
+    "    private boolean goodStanding;\n",
+    "\n",
+    "    public MemberInfo(String name, int gradYear, boolean goodStanding) {\n",
+    "        this.name = name;\n",
+    "        this.gradYear = gradYear;\n",
+    "        this.goodStanding = goodStanding;\n",
+    "    }\n",
+    "\n",
+    "    public int getGradYear() {\n",
+    "        return gradYear;\n",
+    "    }\n",
+    "\n",
+    "    public boolean inGoodStanding() {\n",
+    "        return goodStanding;\n",
+    "    }\n",
+    "\n",
+    "    public String getMemberName() {\n",
+    "        return name;\n",
     "    }\n",
     "}"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {
     "vscode": {
      "languageId": "java"
     }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Removed members who graduated in 2024:\n",
+      "2024: John\n",
+      "2024: Emily\n",
+      "2024: David\n"
+     ]
+    }
+   ],
    "source": [
     "//Part B\n",
-    "public ArrayList<MemberInfo> removeMembers(int year) {\n",
-    "    ArrayList<MemberInfo> graduatedMembers = new ArrayList<>();\n",
-    "\n",
-    "    Iterator<MemberInfo> iterator = memberList.iterator();\n",
-    "    while (iterator.hasNext()) {\n",
-    "        MemberInfo member = iterator.next();\n",
-    "        if (member.getGradYear() <= year && member.inGoodStanding()) {\n",
-    "            graduatedMembers.add(member);\n",
-    "            iterator.remove();\n",
+    "import java.util.ArrayList;\n",
+    "\n",
+    "public class ClubMembers {\n",
+    "    private ArrayList<MemberInfo> memberList;\n",
+    "\n",
+    "    public ClubMembers() {\n",
+    "        memberList = new ArrayList<>();\n",
+    "    }\n",
+    "\n",
+    "    /**\n",
+    "     * Adds new club members to memberList.\n",
+    "     * Precondition: names is a non-empty array.\n",
+    "     */\n",
+    "    public void addMembers(String[] names, int gradYear) {\n",
+    "        for (String name : names) {\n",
+    "            MemberInfo member = new MemberInfo(name, gradYear, true);\n",
+    "            memberList.add(member);\n",
     "        }\n",
     "    }\n",
     "\n",
-    "    return graduatedMembers;\n",
-    "}"
+    "    /**\n",
+    "     * Removes members who have graduated and returns a list of members who have\n",
+    "     * graduated and are in good standing.\n",
+    "     */\n",
+    "    public ArrayList<MemberInfo> removeMembers(int year) {\n",
+    "        ArrayList<MemberInfo> graduatedMembers = new ArrayList<>();\n",
+    "        for (int i = 0; i < memberList.size(); i++) {\n",
+    "            MemberInfo member = memberList.get(i);\n",
+    "            if (member.getGradYear() == year && member.inGoodStanding()) {\n",
+    "                graduatedMembers.add(member);\n",
+    "                memberList.remove(i);\n",
+    "                i--; // Decrement the index as the list size has changed\n",
+    "            }\n",
+    "        }\n",
+    "        return graduatedMembers;\n",
+    "    }\n",
+    "\n",
+    "    // Tester method\n",
+    "    public static void main(String[] args) {\n",
+    "        ClubMembers club = new ClubMembers();\n",
+    "\n",
+    "        // Adding members\n",
+    "        String[] names = {\"John\", \"Emily\", \"David\"};\n",
+    "        int gradYear = 2024;\n",
+    "        club.addMembers(names, gradYear);\n",
+    "\n",
+    "        // Removing members who graduated in a specific year\n",
+    "        int yearToRemove = 2024;\n",
+    "        ArrayList<MemberInfo> removedMembers = club.removeMembers(yearToRemove);\n",
+    "\n",
+    "        // Displaying removed members\n",
+    "        System.out.println(\"Removed members who graduated in \" + yearToRemove + \":\");\n",
+    "        for (MemberInfo member : removedMembers) {\n",
+    "            System.out.println(member.getGradYear() + \": \" + member.getMemberName());\n",
+    "        }\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "ClubMembers.main(null);"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "vscode": {
-     "languageId": "java"
-    }
-   },
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {