Added deque.

.metadata/.plugins/org.eclipse.core.resources/.projects/abstraction/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:09 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.resources/.projects/accumulators/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:08 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.resources/.projects/fibonacci/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:09 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.resources/.projects/generics/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:09 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.resources/.projects/mastermind/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:09 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.resources/.projects/trees/org.eclipse.egit.core/GitProjectData.properties

@@ -1,3 +1,3 @@
 #GitProjectData
-#Thu Nov 21 00:04:34 EST 2024
+#Tue Dec 03 08:17:09 EST 2024
 .gitdir=../.git

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.ide.prefs

@@ -1,4 +1,4 @@
 eclipse.preferences.version=1
-platformState=898993722738329
+platformState=912091304600930
 quickStart=false
 tipsAndTricks=true

.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi

@@ -1,14 +1,14 @@
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     <persistedState key="aggregateWorkingSetId" value="Aggregate for window 1730770912148"/>
-    <persistedState key="show_in_time" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?>&#xA;&lt;show_in_time/>"/>
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     <tags>topLevel</tags>
     <tags>shellMaximized</tags>
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@@ -139,7 +139,7 @@
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                 <tags>Java</tags>
                 <tags>Debug</tags>
@@ -229,29 +229,17 @@
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+        <children xsi:type="menu:HandledToolItem" xmi:id="_xmpFoLF4Ee-6AOTT8jghfQ" elementId="print" visible="false" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/print_edit.png" tooltip="Print" command="_HwBIYpsXEe-qluA09t8VjQ"/>
       </children>
       <children xsi:type="menu:ToolBar" xmi:id="_IHlTsZsXEe-qluA09t8VjQ" elementId="group.edit" toBeRendered="false">
         <tags>toolbarSeparator</tags>
@@ -461,8 +449,8 @@
       </children>
       <children xsi:type="menu:ToolBar" xmi:id="_IHl6wJsXEe-qluA09t8VjQ" elementId="org.eclipse.ui.workbench.edit">
         <tags>Draggable</tags>
-        <children xsi:type="menu:HandledToolItem" xmi:id="_x4cP5KucEe-WdNkwOBWhfg" elementId="undo" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/undo_edit.png" tooltip="Undo" enabled="false" command="_Hv5zk5sXEe-qluA09t8VjQ"/>
+        <children xsi:type="menu:HandledToolItem" xmi:id="_xmsI8LF4Ee-6AOTT8jghfQ" elementId="undo" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/undo_edit.png" tooltip="Undo" enabled="false" command="_Hv5zk5sXEe-qluA09t8VjQ"/>
-        <children xsi:type="menu:HandledToolItem" xmi:id="_x4cP5aucEe-WdNkwOBWhfg" elementId="redo" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/redo_edit.png" tooltip="Redo" enabled="false" command="_Hv8P25sXEe-qluA09t8VjQ"/>
+        <children xsi:type="menu:HandledToolItem" xmi:id="_xmtXELF4Ee-6AOTT8jghfQ" elementId="redo" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/redo_edit.png" tooltip="Redo" enabled="false" command="_Hv8P25sXEe-qluA09t8VjQ"/>
       </children>
       <children xsi:type="menu:ToolBar" xmi:id="_IHl6wZsXEe-qluA09t8VjQ" elementId="additions" toBeRendered="false">
         <tags>toolbarSeparator</tags>
@@ -486,7 +474,7 @@
       </children>
       <children xsi:type="menu:ToolBar" xmi:id="_IHmh0JsXEe-qluA09t8VjQ" elementId="org.eclipse.ui.workbench.navigate">
         <tags>Draggable</tags>
-        <children xsi:type="menu:HandledToolItem" xmi:id="_x4c28KucEe-WdNkwOBWhfg" elementId="org.eclipse.ui.window.pinEditor" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/pin_editor.png" tooltip="Pin Editor" type="Check" command="_HwAhNZsXEe-qluA09t8VjQ"/>
+        <children xsi:type="menu:HandledToolItem" xmi:id="_xmwaYLF4Ee-6AOTT8jghfQ" elementId="org.eclipse.ui.window.pinEditor" iconURI="platform:/plugin/org.eclipse.ui/icons/full/etool16/pin_editor.png" tooltip="Pin Editor" enabled="false" type="Check" command="_HwAhNZsXEe-qluA09t8VjQ"/>
       </children>
       <children xsi:type="menu:ToolBar" xmi:id="_IHmh0ZsXEe-qluA09t8VjQ" elementId="group.editor" toBeRendered="false">
         <tags>toolbarSeparator</tags>

.metadata/.plugins/org.eclipse.jdt.core/savedIndexNames.txt

@@ -1,10 +1,9 @@
-INDEX VERSION 1.134+/home/jacob/Projects/CS3/.metadata/.plugins/org.eclipse.jdt.core
+INDEX VERSION 1.134+/home/jacob/School/CS3/.metadata/.plugins/org.eclipse.jdt.core
-3443351165.index
-3024544230.index
-1865797976.index
 972395290.index
-1012296427.index
+500292351.index
-3659629937.index
+783481251.index
-3051291202.index
+1865797976.index
 365334263.index
+3051291202.index
 3487212494.index
+2954488155.index

.metadata/.plugins/org.eclipse.jdt.ui/dialog_settings.xml

@@ -35,16 +35,16 @@
 	<section name="JavaProjectWizard.dialogBounds">
 		<item key="DIALOG_X_ORIGIN" value="20"/>
 		<item key="DIALOG_Y_ORIGIN" value="20"/>
-		<item key="DIALOG_WIDTH" value="815"/>
+		<item key="DIALOG_WIDTH" value="817"/>
 		<item key="DIALOG_HEIGHT" value="691"/>
-		<item key="DIALOG_FONT_NAME" value="1|Cantarell|11.0|0|GTK|1|"/>
+		<item key="DIALOG_FONT_NAME" value="1|IBM Plex Sans|11.0|0|GTK|1|"/>
 	</section>
 	<section name="NewClassCreationWizard.dialogBounds">
 		<item key="DIALOG_X_ORIGIN" value="20"/>
 		<item key="DIALOG_Y_ORIGIN" value="20"/>
-		<item key="DIALOG_WIDTH" value="664"/>
+		<item key="DIALOG_WIDTH" value="669"/>
 		<item key="DIALOG_HEIGHT" value="691"/>
-		<item key="DIALOG_FONT_NAME" value="1|Cantarell|11.0|0|GTK|1|"/>
+		<item key="DIALOG_FONT_NAME" value="1|IBM Plex Sans|11.0|0|GTK|1|"/>
 	</section>
 	<section name="OptionalMessageDialog.hide.">
 		<item key="org.eclipse.jdt.ui.typecomment.deprecated" value="true"/>

.metadata/.plugins/org.eclipse.ui.ide/dialog_settings.xml

@@ -7,17 +7,26 @@
 		<item key="WizardProjectsImportPage.STORE_CLOSE_CREATED_PROJECTS_ID" value="false"/>
 		<item key="WizardProjectsImportPage.STORE_HIDE_CONFLICTING_PROJECTS_ID" value="false"/>
 		<list key="WizardProjectsImportPage.STORE_DIRECTORIES">
+			<item value="/home/jacob/School/CS3"/>
 			<item value="/home/jacob/CS3"/>
 		</list>
 		<list key="WizardProjectsImportPage.STORE_ARCHIVES">
 			<item value=""/>
 		</list>
 		<section name="ExternalProjectImportWizard.dialogBounds">
+			<item key="DIALOG_X_ORIGIN" value="0"/>
+			<item key="DIALOG_Y_ORIGIN" value="0"/>
+			<item key="DIALOG_WIDTH" value="613"/>
+			<item key="DIALOG_HEIGHT" value="691"/>
+			<item key="DIALOG_FONT_NAME" value="1|IBM Plex Sans|11.0|0|GTK|1|"/>
+		</section>
+	</section>
+	<section name="ChooseWorkspaceDialogSettings">
 		<item key="DIALOG_X_ORIGIN" value="20"/>
 		<item key="DIALOG_Y_ORIGIN" value="20"/>
-			<item key="DIALOG_WIDTH" value="613"/>
-			<item key="DIALOG_HEIGHT" value="796"/>
-			<item key="DIALOG_FONT_NAME" value="1|Cantarell|11.0|0|GTK|1|"/>
 	</section>
+	<section name="WORKBENCH_SETTINGS">
+		<list key="ENABLED_TRANSFERS">
+		</list>
 	</section>
 </section>

.metadata/version.ini

@@ -1,3 +1,3 @@
-#Mon Nov 25 21:18:51 EST 2024
+#Tue Dec 03 08:16:11 EST 2024
 org.eclipse.core.runtime=2
 org.eclipse.platform=4.33.0.v20240903-0240

abstraction/.classpath

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21">
-		<attributes>
-			<attribute name="module" value="true"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="src" path="src"/>
-    <classpathentry kind="lib" path="/home/jacob/Projects/CS3/libs/javalib.jar"/>
-    <classpathentry kind="lib" path="/home/jacob/Projects/CS3/libs/tester.jar"/>
-	<classpathentry kind="output" path="bin"/>
-</classpath>

deque/.project

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>deque</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1733232021426</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

deque/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8

deque/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=21
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

deque/src/deque/Main.java

@@ -0,0 +1,68 @@
+package deque;
+
+import tester.Tester;
+
+class Examples {
+
+    Sentinel<String> exampleSentinel;
+
+    void init() {
+        exampleSentinel = new Sentinel<String>();
+    }
+
+    void testSentinel(Tester t) {
+        init();
+        t.checkExpect(exampleSentinel.nxt, exampleSentinel);
+    }
+}
+
+// A doubly-linked list element.
+abstract class ANode<PointsTo> {
+
+    PointsTo nxt; // Next element.
+    PointsTo pre; // Previous element.
+
+    ANode(PointsTo nxt, PointsTo pre) {
+        this.nxt = nxt;
+        this.pre = pre;
+    }
+}
+
+// Self-referential node.
+abstract class ASRefNode {
+
+    ASRefNode nxt;
+    ASRefNode pre;
+
+    ASRefNode() {
+        this.nxt = this;
+        this.pre = this;
+    }
+}
+
+class Deque<A> {
+
+    Sentinel<A> sentinel;
+
+    Deque(Sentinel<A> sentinel) {
+        this.sentinel = sentinel;
+    }
+}
+
+class Sentinel<T> extends ANode<ANode<T>> {
+
+    Sentinel() {
+        super(null, null);
+        this.nxt = this;
+    }
+}
+
+class Node<T> extends ANode<Node<T>> {
+
+    T val;
+
+    Node(T val) {
+        super(null, null);
+        this.val = val;
+    }
+}

trees/.classpath

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21">
-		<attributes>
-			<attribute name="module" value="true"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="src" path="src"/>
-    <classpathentry kind="lib" path="/home/jacob/Projects/CS3/libs/javalib.jar"/>
-    <classpathentry kind="lib" path="/home/jacob/Projects/CS3/libs/tester.jar"/>
-	<classpathentry kind="output" path="bin"/>
-</classpath>