Add examples for remove an element form linkedlist blogpost

Author: gauravkukade

collections/linkedlist/remove-element-from-linkedlist/LinkedListRemove.java

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+package com.gaurav.ExProject.LinkedList;
+
+import java.util.LinkedList;
+
+/**
+ * A Java program to remove head element from 
+ * the linkedList using the remove() method.
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LinkedListRemove {
+
+	public static void main(String[] args) {
+		
+		LinkedList<String> linkedList = new LinkedList<String>();
+		
+		linkedList.add("BHIM");
+		linkedList.add("PayTM");
+		linkedList.add("Freecharge");
+		linkedList.add("PhonePe");
+		linkedList.add("JioPay");
+		
+		System.out.println("LinkedList before removing an element:");
+		System.out.println(linkedList);
+		
+		// removes head(first element) i.e. removes BHIM
+		linkedList.remove();
+		
+		System.out.println("\nLinkedList after removing an element using remove() method:");
+		System.out.println(linkedList);
+	}
+}

collections/linkedlist/remove-element-from-linkedlist/LinkedListRemoveFirst.java

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+package com.gaurav.ExProject.LinkedList;
+
+import java.util.LinkedList;
+
+/**
+ * A Java program to remove first element from 
+ * the linkedList using the removeFirst() method.
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LinkedListRemoveFirst {
+
+	public static void main(String[] args) {
+		
+		LinkedList<String> linkedList = new LinkedList<String>();
+		
+		linkedList.add("BHIM");
+		linkedList.add("PayTM");
+		linkedList.add("Freecharge");
+		linkedList.add("PhonePe");
+		linkedList.add("JioPay");
+		
+		System.out.println("LinkedList before removing an element:");
+		System.out.println(linkedList);
+		
+		// removes first element i.e. removes BHIM
+		linkedList.removeFirst();
+		
+		System.out.println("\nLinkedList after removing an element using removeFirst() method:");
+		System.out.println(linkedList);
+	}
+}

collections/linkedlist/remove-element-from-linkedlist/LinkedListRemoveLast.java

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+package com.gaurav.ExProject.LinkedList;
+
+import java.util.LinkedList;
+
+/**
+ * A Java program to remove last element from 
+ * the linkedList using the removeLast() method.
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LinkedListRemoveLast {
+
+	public static void main(String[] args) {
+		
+		LinkedList<String> linkedList = new LinkedList<String>();
+		
+		linkedList.add("BHIM");
+		linkedList.add("PayTM");
+		linkedList.add("Freecharge");
+		linkedList.add("PhonePe");
+		linkedList.add("JioPay");
+		
+		System.out.println("LinkedList before removing an element:");
+		System.out.println(linkedList);
+		
+		// removes first element i.e. removes BHIM
+		linkedList.removeLast();
+		
+		System.out.println("\nLinkedList after removing an element using removeLast() method:");
+		System.out.println(linkedList);
+	}
+}

collections/linkedlist/remove-element-from-linkedlist/LinkedListRemoveObject.java

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+package com.gaurav.ExProject.LinkedList;
+
+import java.util.LinkedList;
+
+/**
+ * A Java program to remove the specified element from 
+ * the linkedList using the remove(Object o) method.
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LinkedListRemoveObject {
+
+	public static void main(String[] args) {
+		
+		LinkedList<String> linkedList = new LinkedList<String>();
+		
+		linkedList.add("BHIM");
+		linkedList.add("PayTM");
+		linkedList.add("Freecharge");
+		linkedList.add("PhonePe");
+		linkedList.add("JioPay");
+		
+		System.out.println("LinkedList before removing an element:");
+		System.out.println(linkedList);
+		
+		// removes the specified element i.e. removes Freecharge
+		linkedList.remove("Freecharge");
+		
+		System.out.println("\nLinkedList after removing an element using remove(Object o) method:");
+		System.out.println(linkedList);
+	}
+}

collections/linkedlist/remove-element-from-linkedlist/LinkedListRemoveObjectByIndex.java

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+package com.gaurav.ExProject.LinkedList;
+
+import java.util.LinkedList;
+
+/**
+ * A Java program to remove element at the specified position i.e. index
+ * from the linkedList using the remove(int index) method.
+ * 
+ * @author coderolls.com
+ */
+public class LinkedListRemoveObjectByIndex {
+
+	public static void main(String[] args) {
+		
+		LinkedList<String> linkedList = new LinkedList<String>();
+		
+		linkedList.add("BHIM");
+		linkedList.add("PayTM");
+		linkedList.add("Freecharge");
+		linkedList.add("PhonePe");
+		linkedList.add("JioPay");
+		
+		System.out.println("LinkedList before removing an element:");
+		System.out.println(linkedList);
+		
+		// removes the element at index 3 i.e. removes PhonePe
+		linkedList.remove(3);
+		
+		System.out.println("\nLinkedList after removing an element using remove(int index) method:");
+		System.out.println(linkedList);
+	}
+}