diff --git a/Sorting/AlgorithmTester.java b/Sorting/AlgorithmTester.java
index 07b6e6f..3b9564e 100644
--- a/Sorting/AlgorithmTester.java
+++ b/Sorting/AlgorithmTester.java
@@ -84,7 +84,7 @@ public class AlgorithmTester{
         int input;
         boolean ready=false;
         boolean print=false;
-        String[] sortingAlgoNames = {"bubble sort","selection sort","insertion sort","counting sort","quick sort","quick sort (3-way partition)","merge sort"};
+        String[] sortingAlgoNames = {"bubble sort","selection sort","insertion sort","insertion sort (linked list)","counting sort","quick sort","quick sort (3-way partition)","merge sort"};
         boolean[] sortingAlgoChoices = new boolean[sortingAlgoNames.length];
         System.out.print("\nPlease enter file name: ");
         filename = sc.next();
@@ -133,10 +133,11 @@ public class AlgorithmTester{
         boolean bubble=sortingAlgoChoices[0];
         boolean selection=sortingAlgoChoices[1];
         boolean insertion=sortingAlgoChoices[2];
-        boolean counting=sortingAlgoChoices[3];
-        boolean quick=sortingAlgoChoices[4];
-        boolean quickTWP=sortingAlgoChoices[5];
-        boolean merge=sortingAlgoChoices[6];
+        boolean insertionll=sortingAlgoChoices[3];
+        boolean counting=sortingAlgoChoices[4];
+        boolean quick=sortingAlgoChoices[5];
+        boolean quickTWP=sortingAlgoChoices[6];
+        boolean merge=sortingAlgoChoices[7];
         ArrayList<SortResult> results = new ArrayList<SortResult>();
         RandomNumberFileReader reader = new RandomNumberFileReader(filename);
         if(bubble){
@@ -151,6 +152,10 @@ public class AlgorithmTester{
             InsertionSorter inSorter = new InsertionSorter(reader);
             results.add(inSorter.measuredSort());
         }
+        if(insertionll){
+            InsertionSorterLinkedList inSorterLL = new InsertionSorterLinkedList(reader);
+            results.add(inSorterLL.measuredSort());
+        }
         if(counting){
             CountingSorter countSorter = new CountingSorter(reader);
             results.add(countSorter.measuredSort());
diff --git a/Sorting/InsertionSorterLinkedList.java b/Sorting/InsertionSorterLinkedList.java
new file mode 100644
index 0000000..2994aab
--- /dev/null
+++ b/Sorting/InsertionSorterLinkedList.java
@@ -0,0 +1,30 @@
+package Sorting;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+
+public class InsertionSorterLinkedList extends Sorter{
+
+    public InsertionSorterLinkedList(RandomNumberFileReader reader){
+        super("insertion sort (linked list)", reader);
+    }
+
+    protected void sort(){
+        LinkedList<Integer> numbersll = new LinkedList<Integer>(Arrays.asList(numbers));//make a linked list from numbers array
+        for(int i=1;i<numbersll.size();i++){
+            int value = numbersll.get(i);
+            int j=0;
+            while(j>=0 && compare(numbers.get(j),numbersll.get(i))<0){
+                j--;
+            }
+            numbersll.add(j+1, numbersll.remove(i));
+        }
+        /*
+        for(int i=0;i<numbers.length;i++){
+            writeToArray(numbers, i, numbersll.removeFirst());//write sorted linked list back into array
+        }*/
+        numbersll.toArray(numbers);
+        writesUsed += numbers.length;
+    }
+    
+}
\ No newline at end of file
diff --git a/Sorting/Sorter.java b/Sorting/Sorter.java
index dd0e9ab..4626ec4 100644
--- a/Sorting/Sorter.java
+++ b/Sorting/Sorter.java
@@ -34,7 +34,7 @@ abstract class Sorter {
      * @param a the index of the first element
      * @param b the index of the second element
      */
-    void swap(int a, int b){
+    protected void swap(int a, int b){
         int tmp = numbers[a];
         numbers[a] = numbers[b];
         numbers[b] = tmp;
@@ -47,7 +47,7 @@ abstract class Sorter {
      * @param b the second integer to be compared
      * @return a negative number if the first integer is smaller than the second, 0 if they are equal, and a positive number if the first integer is greater than the second.
      */
-    int compare(int a, int b){
+    protected int compare(int a, int b){
         comparisonsUsed++;
         return Integer.compare(a,b);
     }
@@ -58,7 +58,7 @@ abstract class Sorter {
      * @param index the index to be written to
      * @param value the value to write
      */
-    void writeToArray(Integer[] array, int index, int value){
+    protected void writeToArray(Integer[] array, int index, int value){
         array[index]=value;
         writesUsed++;
     }