From e7aa4be6ec6615590c5de4f05b01e8696dcba829 Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sat, 15 Jul 2017 17:55:54 +0700
Subject: [PATCH 1/9] changed LinkForLinkedList class name to Node

- I think it's less confusing if we directly call it Node, especially for beginners.
- Also removed displayLink() method, added getValue() instead. Should be more useful when used in other applications.
---
 data_structures/SinglyLinkedList.java | 35 +++++++++++++--------------
 1 file changed, 17 insertions(+), 18 deletions(-)

diff --git a/data_structures/SinglyLinkedList.java b/data_structures/SinglyLinkedList.java
index 4523739b3a98..521dfb859f34 100644
--- a/data_structures/SinglyLinkedList.java
+++ b/data_structures/SinglyLinkedList.java
@@ -1,9 +1,9 @@
 /**
  * This class implements a SinglyLinked List. This is done
- * using SinglyLinkedList class and a LinkForLinkedList Class.
+ * using SinglyLinkedList class and a Node Class.
  * 
- * A linked list is implar to an array, it hold values.
- * However, links in a linked list do not have indexes. With
+ * A linked list or Node is implar to an array, it hold values.
+ * However, nodes in a linked list do not have indexes. With
  * a linked list you do not need to predetermine it's size as
  * it gorws and shrinks as it is edited. This is an example of
  * a singly linked list. Elements can only be added/removed
@@ -14,7 +14,7 @@
  */
 class SinglyLinkedList{
 	/**Head refered to the front of the list */
-	private LinkForLinkedList head;
+	private Node head;
 
 	/**
 	 * Constructor of SinglyLinkedList
@@ -29,7 +29,7 @@ public SinglyLinkedList(){
 	 * @param x Element to be added
 	 */
 	public void insertHead(int x){
-		LinkForLinkedList newLink = new LinkForLinkedList(x); //Create a new link with a value attached to it
+		Node newLink = new Node(x); //Create a new link with a value attached to it
 		newLink.next = head; 		//Set the new link to point to the current head
 		head = newLink; 			//Now set the new link to be the head
 	}
@@ -39,8 +39,8 @@ public void insertHead(int x){
 	 * 
 	 * @return The element deleted
 	 */
-	public LinkForLinkedList deleteHead(){
-		LinkForLinkedList temp = head;
+	public Node deleteHead(){
+		Node temp = head;
 		head = head.next; //Make the second element in the list the new head, the Java garbage collector will later remove the old head
 		return temp;
 	}
@@ -58,12 +58,11 @@ public boolean isEmpty(){
 	 * Prints contents of the list
 	 */
 	public void display(){
-		LinkForLinkedList current = head;
+		Node current = head;
 		while(current!=null){
-			current.displayLink();
+			System.out.print(current.getValue() +" ")
 			current = current.next;
 		}
-		System.out.println();
 	}
 	
 	/**
@@ -96,26 +95,26 @@ public static void main(String args[]){
  * @author Unknown
  *
  */
-class LinkForLinkedList{
+class Node{
 	/** The value of the node */
 	public int value;
 	/** Point to the next node */
-	public LinkForLinkedList next; //This is what the link will point to
+	public Node next; //This is what the link will point to
 
 	/**
 	 * Constructor
 	 * 
 	 * @param valuein Value to be put in the node
 	 */
-	public LinkForLinkedList(int valuein){
+	public Node(int valuein){
 		value = valuein;
 	}
-
+	
 	/**
-	 * Prints out the value of the node
+	 * Returns the value of the node
 	 */
-	public void displayLink(){
-		System.out.print(value+" ");
+	public int getValue(){
+		return value;
 	}
 
-}
\ No newline at end of file
+}

From d1ee79cbc6c4e676e3c05c4036170fb63629eabb Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 18:07:21 +0700
Subject: [PATCH 2/9] Update SinglyLinkedList.java

---
 data_structures/SinglyLinkedList.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/data_structures/SinglyLinkedList.java b/data_structures/SinglyLinkedList.java
index 521dfb859f34..f63a4a7410b5 100644
--- a/data_structures/SinglyLinkedList.java
+++ b/data_structures/SinglyLinkedList.java
@@ -63,6 +63,7 @@ public void display(){
 			System.out.print(current.getValue() +" ")
 			current = current.next;
 		}
+		System.out.println();
 	}
 	
 	/**

From b9cae48eec33704d98e15fc833cc08597a6c3314 Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 18:22:31 +0700
Subject: [PATCH 3/9] Update SinglyLinkedList.java

---
 data_structures/SinglyLinkedList.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data_structures/SinglyLinkedList.java b/data_structures/SinglyLinkedList.java
index f63a4a7410b5..b0b263383d59 100644
--- a/data_structures/SinglyLinkedList.java
+++ b/data_structures/SinglyLinkedList.java
@@ -60,7 +60,7 @@ public boolean isEmpty(){
 	public void display(){
 		Node current = head;
 		while(current!=null){
-			System.out.print(current.getValue() +" ")
+			System.out.print(current.getValue() +" ");
 			current = current.next;
 		}
 		System.out.println();

From e805914a5dbef8448d5ade1bb4c349cd3521ffd9 Mon Sep 17 00:00:00 2001
From: Issrin P <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 19:07:21 +0700
Subject: [PATCH 4/9] edit on eclipse

---
 .DS_Store                                     | Bin 8196 -> 10244 bytes
 data_structures/.DS_Store                     | Bin 0 -> 6148 bytes
 data_structures/.project                      |  17 +++++++++++++++++
 data_structures/bin/.classpath                |   7 +++++++
 data_structures/bin/.gitignore                |   1 +
 data_structures/bin/.project                  |  17 +++++++++++++++++
 data_structures/bin/AVLtree$Node.class        | Bin 0 -> 716 bytes
 data_structures/bin/AVLtree.class             | Bin 0 -> 1979 bytes
 .../bin/CircleLinkedList$Node.class           | Bin 0 -> 897 bytes
 data_structures/bin/CircleLinkedList.class    | Bin 0 -> 1695 bytes
 data_structures/bin/DoublyLinkedList.class    | Bin 0 -> 1999 bytes
 data_structures/bin/Graph.class               | Bin 0 -> 241 bytes
 data_structures/bin/Graphs.class              | Bin 0 -> 361 bytes
 data_structures/bin/Link.class                | Bin 0 -> 1281 bytes
 data_structures/bin/Node.class                | Bin 0 -> 412 bytes
 data_structures/bin/PriorityQueue.class       | Bin 0 -> 1079 bytes
 data_structures/bin/PriorityQueues.class      | Bin 0 -> 1007 bytes
 data_structures/bin/Queue.class               | Bin 0 -> 1437 bytes
 data_structures/bin/Queues.class              | Bin 0 -> 778 bytes
 data_structures/bin/SinglyLinkedList.class    | Bin 0 -> 1592 bytes
 data_structures/bin/Stack.class               | Bin 0 -> 1321 bytes
 data_structures/bin/Stack2.class              | Bin 0 -> 1285 bytes
 data_structures/bin/Stacks.class              | Bin 0 -> 1159 bytes
 data_structures/bin/Tree.class                | Bin 0 -> 4324 bytes
 .../bin/heaps/EmptyHeapException.class        | Bin 0 -> 358 bytes
 data_structures/bin/heaps/Heap.class          | Bin 0 -> 273 bytes
 data_structures/bin/heaps/HeapElement.class   | Bin 0 -> 2150 bytes
 data_structures/bin/heaps/MaxHeap.class       | Bin 0 -> 3751 bytes
 data_structures/bin/heaps/MinHeap.class       | Bin 0 -> 3751 bytes
 29 files changed, 42 insertions(+)
 create mode 100644 data_structures/.DS_Store
 create mode 100644 data_structures/.project
 create mode 100644 data_structures/bin/.classpath
 create mode 100644 data_structures/bin/.gitignore
 create mode 100644 data_structures/bin/.project
 create mode 100644 data_structures/bin/AVLtree$Node.class
 create mode 100644 data_structures/bin/AVLtree.class
 create mode 100644 data_structures/bin/CircleLinkedList$Node.class
 create mode 100644 data_structures/bin/CircleLinkedList.class
 create mode 100644 data_structures/bin/DoublyLinkedList.class
 create mode 100644 data_structures/bin/Graph.class
 create mode 100644 data_structures/bin/Graphs.class
 create mode 100644 data_structures/bin/Link.class
 create mode 100644 data_structures/bin/Node.class
 create mode 100644 data_structures/bin/PriorityQueue.class
 create mode 100644 data_structures/bin/PriorityQueues.class
 create mode 100644 data_structures/bin/Queue.class
 create mode 100644 data_structures/bin/Queues.class
 create mode 100644 data_structures/bin/SinglyLinkedList.class
 create mode 100644 data_structures/bin/Stack.class
 create mode 100644 data_structures/bin/Stack2.class
 create mode 100644 data_structures/bin/Stacks.class
 create mode 100644 data_structures/bin/Tree.class
 create mode 100644 data_structures/bin/heaps/EmptyHeapException.class
 create mode 100644 data_structures/bin/heaps/Heap.class
 create mode 100644 data_structures/bin/heaps/HeapElement.class
 create mode 100644 data_structures/bin/heaps/MaxHeap.class
 create mode 100644 data_structures/bin/heaps/MinHeap.class

diff --git a/.DS_Store b/.DS_Store
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diff --git a/data_structures/.DS_Store b/data_structures/.DS_Store
new file mode 100644
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diff --git a/data_structures/.project b/data_structures/.project
new file mode 100644
index 000000000000..224621d79a1e
--- /dev/null
+++ b/data_structures/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>data_structures</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>
+</projectDescription>
diff --git a/data_structures/bin/.classpath b/data_structures/bin/.classpath
new file mode 100644
index 000000000000..47b5b52899fb
--- /dev/null
+++ b/data_structures/bin/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry excluding="Trees/" kind="src" path=""/>
+	<classpathentry kind="src" path="Trees"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/data_structures/bin/.gitignore b/data_structures/bin/.gitignore
new file mode 100644
index 000000000000..ae3c1726048c
--- /dev/null
+++ b/data_structures/bin/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/data_structures/bin/.project b/data_structures/bin/.project
new file mode 100644
index 000000000000..224621d79a1e
--- /dev/null
+++ b/data_structures/bin/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>data_structures</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>
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diff --git a/data_structures/bin/AVLtree.class b/data_structures/bin/AVLtree.class
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diff --git a/data_structures/bin/Tree.class b/data_structures/bin/Tree.class
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diff --git a/data_structures/bin/heaps/EmptyHeapException.class b/data_structures/bin/heaps/EmptyHeapException.class
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HcmV?d00001

diff --git a/data_structures/bin/heaps/MinHeap.class b/data_structures/bin/heaps/MinHeap.class
new file mode 100644
index 0000000000000000000000000000000000000000..531c4e5032cf32c702d6e6b4eda5099e505a08e1
GIT binary patch
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literal 0
HcmV?d00001


From 8e2b02ce1cc0e72002b199cc1622d9669f056974 Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 21:51:11 +0700
Subject: [PATCH 5/9] delete .ds_store

---
 .DS_Store | Bin 10244 -> 0 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 .DS_Store

diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 0ee639d925b1c76b2054026c4727a3814ce38daf..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 10244
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From 077300bc11a9d1d65fc584ab6ce2ad77cea5cd5a Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 21:56:05 +0700
Subject: [PATCH 6/9] delete ds_store

---
 data_structures/.DS_Store | Bin 6148 -> 0 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 data_structures/.DS_Store

diff --git a/data_structures/.DS_Store b/data_structures/.DS_Store
deleted file mode 100644
index 796fe74ed6e4800bffd1e33722633921b0eb7991..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 6148
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From 63f9b36777f22fb984db705b9ada01ebc78be93b Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 22:00:37 +0700
Subject: [PATCH 7/9] try see if conflict

---
 data_structures/SinglyLinkedList.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/data_structures/SinglyLinkedList.java b/data_structures/SinglyLinkedList.java
index b0b263383d59..197a1fced4eb 100644
--- a/data_structures/SinglyLinkedList.java
+++ b/data_structures/SinglyLinkedList.java
@@ -107,8 +107,8 @@ class Node{
 	 * 
 	 * @param valuein Value to be put in the node
 	 */
-	public Node(int valuein){
-		value = valuein;
+	public Node(int value){
+		value = value;
 	}
 	
 	/**

From ce3bd7b2d6dbd0cd054dc42ed579377bf58e3880 Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 22:02:43 +0700
Subject: [PATCH 8/9] try see if conflict

---
 data_structures/SinglyLinkedList.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/data_structures/SinglyLinkedList.java b/data_structures/SinglyLinkedList.java
index 197a1fced4eb..14356901577b 100644
--- a/data_structures/SinglyLinkedList.java
+++ b/data_structures/SinglyLinkedList.java
@@ -107,8 +107,8 @@ class Node{
 	 * 
 	 * @param valuein Value to be put in the node
 	 */
-	public Node(int value){
-		value = value;
+	public Node(int newValue){
+		value = newValue;
 	}
 	
 	/**

From d342f7510b54c50f570c738dd15876bbc1289cb2 Mon Sep 17 00:00:00 2001
From: earngpi <earngpi@gmail.com>
Date: Sun, 16 Jul 2017 22:11:03 +0700
Subject: [PATCH 9/9] create palindrome.java

---
 Palindrome.java | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 Palindrome.java

diff --git a/Palindrome.java b/Palindrome.java
new file mode 100644
index 000000000000..b36900375310
--- /dev/null
+++ b/Palindrome.java
@@ -0,0 +1,17 @@
+public class Palidrome {
+	
+  //helper method
+	public String reverseString(String x){
+		String output = "";
+		for(int i=x.length()-1; i>=0; i--){
+			output += x.charAt(i); //addition of chars create String
+		}
+		return output;
+	}
+	
+	//palidrome method
+	public Boolean isPalindrome(String x){
+		return (x.equalsIgnoreCase(reverseString(x)));
+	}
+  
+  }