diff --git a/dictee/java/.idea/workspace.xml b/dictee/java/.idea/workspace.xml
index 2badee8..da4f01d 100644
--- a/dictee/java/.idea/workspace.xml
+++ b/dictee/java/.idea/workspace.xml
@@ -15,8 +15,8 @@
       <file leaf-file-name="Dictee.java" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Dictee.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="304">
-              <caret line="27" column="20" lean-forward="true" selection-start-line="27" selection-start-column="20" selection-end-line="27" selection-end-column="20" />
+            <state relative-caret-position="46">
+              <caret line="47" column="39" lean-forward="false" selection-start-line="47" selection-start-column="39" selection-end-line="47" selection-end-column="39" />
               <folding>
                 <element signature="imports" expanded="true" />
               </folding>
@@ -56,7 +56,7 @@
       <file leaf-file-name="DicteeTests.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/test/com/brainbaking/dictee/DicteeTests.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="960">
+            <state relative-caret-position="900">
               <caret line="64" column="0" lean-forward="false" selection-start-line="64" selection-start-column="0" selection-end-line="64" selection-end-column="0" />
               <folding>
                 <element signature="imports" expanded="true" />
@@ -130,10 +130,7 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="Scratches" />
-      <pane id="Scope" />
       <pane id="PackagesPane" />
-      <pane id="AndroidView" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -171,6 +168,9 @@
           <select />
         </subPane>
       </pane>
+      <pane id="AndroidView" />
+      <pane id="Scope" />
+      <pane id="Scratches" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -469,55 +469,33 @@
   </component>
   <component name="ToolWindowManager">
     <frame x="0" y="23" width="1440" height="873" extended-state="6" />
-    <editor active="true" />
     <layout>
       <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32958803" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
       <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32958803" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="false" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.32958803" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.125" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.0625" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
       <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.39950064" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
       <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
-      <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
-      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
-      <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
-      <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.39950064" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
       <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32958803" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
-      <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
-      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="false" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="true" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.32958803" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.125" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
       <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
     </layout>
   </component>
   <component name="VcsContentAnnotationSettings">
@@ -566,14 +544,56 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Diff.java">
+    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Tuple.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="240">
-          <caret line="19" column="31" lean-forward="false" selection-start-line="19" selection-start-column="31" selection-end-line="19" selection-end-column="31" />
-          <folding />
+        <state relative-caret-position="45">
+          <caret line="3" column="0" lean-forward="false" selection-start-line="3" selection-start-column="0" selection-end-line="3" selection-end-column="0" />
+          <folding>
+            <element signature="e#193#194#0" expanded="true" />
+            <element signature="e#228#229#0" expanded="true" />
+            <element signature="e#283#284#0" expanded="true" />
+            <element signature="e#333#334#0" expanded="true" />
+            <element signature="e#398#399#0" expanded="true" />
+            <element signature="e#451#452#0" expanded="true" />
+            <element signature="e#491#492#0" expanded="true" />
+            <element signature="e#539#540#0" expanded="true" />
+            <element signature="e#578#579#0" expanded="true" />
+            <element signature="e#612#613#0" expanded="true" />
+            <element signature="e#649#650#0" expanded="true" />
+            <element signature="e#681#682#0" expanded="true" />
+            <element signature="e#710#711#0" expanded="true" />
+            <element signature="e#738#739#0" expanded="true" />
+            <element signature="e#968#969#0" expanded="true" />
+            <element signature="e#1026#1027#0" expanded="true" />
+            <element signature="e#1073#1074#0" expanded="true" />
+            <element signature="e#1128#1129#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/test/com/brainbaking/dictee/DicteeTests.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="900">
+          <caret line="64" column="0" lean-forward="false" selection-start-line="64" selection-start-column="0" selection-end-line="64" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2176#2177#0" expanded="true" />
+            <element signature="e#2238#2239#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Dictee.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="0">
+          <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Diff.java" />
     <entry file="file://$PROJECT_DIR$/test/com/brainbaking/dictee/DicteeTests.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="240">
@@ -593,14 +613,7 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Diff.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="285">
-          <caret line="19" column="31" lean-forward="false" selection-start-line="19" selection-start-column="31" selection-end-line="19" selection-end-column="31" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
+    <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Diff.java" />
     <entry file="file://$PROJECT_DIR$/test/com/brainbaking/dictee/DicteeTests.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="960">
@@ -683,7 +696,7 @@
     <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Diff.java" />
     <entry file="file://$PROJECT_DIR$/test/com/brainbaking/dictee/DicteeTests.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="960">
+        <state relative-caret-position="900">
           <caret line="64" column="0" lean-forward="false" selection-start-line="64" selection-start-column="0" selection-end-line="64" selection-end-column="0" />
           <folding>
             <element signature="imports" expanded="true" />
@@ -722,8 +735,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/com/brainbaking/dictee/Dictee.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="304">
-          <caret line="27" column="20" lean-forward="true" selection-start-line="27" selection-start-column="20" selection-end-line="27" selection-end-column="20" />
+        <state relative-caret-position="46">
+          <caret line="47" column="39" lean-forward="false" selection-start-line="47" selection-start-column="39" selection-end-line="47" selection-end-column="39" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
diff --git a/sorting/java/sorting.iml b/sorting/java/sorting.iml
new file mode 100644
index 0000000..01e8e1b
--- /dev/null
+++ b/sorting/java/sorting.iml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library" scope="TEST">
+      <library name="JUnit5.0">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.0.0/junit-jupiter-api-5.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.0.0/opentest4j-1.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.0.0/junit-platform-commons-1.0.0.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file
diff --git a/sorting/java/src/be/brainbaking/sorting/InsertionSort.java b/sorting/java/src/be/brainbaking/sorting/InsertionSort.java
new file mode 100644
index 0000000..84927cb
--- /dev/null
+++ b/sorting/java/src/be/brainbaking/sorting/InsertionSort.java
@@ -0,0 +1,32 @@
+package be.brainbaking.sorting;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class InsertionSort implements Sortable {
+
+    public List<Integer> sort(List<Integer> list) {
+        // not the same thing, I don't want to mutate the incoming list.
+        // start with nothing and insert it into the right position of result list.
+        // ex. https://www.geeksforgeeks.org/insertion-sort/
+        List<Integer> result = new ArrayList<>();
+        result.add(list.get(0));
+
+        for(int i = 1; i <  list.size(); i++) {
+            int curr = list.get(i);
+
+            boolean added = false;
+            for(int j = 0; j < result.size(); j++) {
+                if(result.get(j) > curr) {
+                    result.add(j, curr);
+                    added = true;
+                    break;
+                }
+            }
+            if(!added) result.add(curr);
+        }
+
+        return result;
+    }
+
+}
diff --git a/sorting/java/src/be/brainbaking/sorting/Sortable.java b/sorting/java/src/be/brainbaking/sorting/Sortable.java
new file mode 100644
index 0000000..146d52d
--- /dev/null
+++ b/sorting/java/src/be/brainbaking/sorting/Sortable.java
@@ -0,0 +1,8 @@
+package be.brainbaking.sorting;
+
+import java.util.List;
+
+public interface Sortable {
+
+    List<Integer> sort(List<Integer> list);
+}
diff --git a/sorting/java/test/be/brainbaking/sorting/SortTest.java b/sorting/java/test/be/brainbaking/sorting/SortTest.java
new file mode 100644
index 0000000..d5920e1
--- /dev/null
+++ b/sorting/java/test/be/brainbaking/sorting/SortTest.java
@@ -0,0 +1,22 @@
+package be.brainbaking.sorting;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class SortTest {
+
+    @Test
+    public void insertionSort() {
+        simpleTestCaseFor(new InsertionSort());
+    }
+
+    private void simpleTestCaseFor(Sortable sorter) {
+        List<Integer> result = sorter.sort(Arrays.asList(4, 2, 3, 1, 6, 5));
+
+        Assertions.assertArrayEquals(Arrays.asList(1, 2, 3, 4, 5, 6).toArray(), result.toArray());
+    }
+}