done

arraz/.idea/workspace.xml

@@ -2,13 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="b3ba50be-3b8d-441a-8e91-35865d2e3cb7" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/.idea/compiler.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/libraries/Maven__junit_junit_4_0.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/modules.xml" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/.idea/vcs.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/arraz.iml" beforeDir="false" afterPath="$PROJECT_DIR$/arraz.iml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/pom.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/MaxMin.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/OddEven.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Arraz.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Arraz.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/test/java/ArrazTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/ArrazTest.java" afterDir="false" />
     </list>
@@ -20,14 +16,26 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <splitter split-orientation="horizontal" split-proportion="0.5">
+    <splitter split-orientation="horizontal" split-proportion="0.5105198">
       <split-first>
-        <leaf>
+        <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
           <file pinned="false" current-in-tab="true">
             <entry file="file://$PROJECT_DIR$/src/main/java/Arraz.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="414">
-                  <caret line="18" lean-forward="true" selection-start-line="18" selection-end-line="18" />
+                <state relative-caret-position="557">
+                  <caret line="206" column="50" selection-start-line="206" selection-start-column="50" selection-end-line="206" selection-end-column="50" />
+                  <folding>
+                    <element signature="imports" expanded="true" />
+                    <element signature="e#5210#5211#0" expanded="true" />
+                    <element signature="e#5274#5275#0" expanded="true" />
+                    <element signature="e#5791#5792#0" expanded="true" />
+                    <element signature="e#5843#5844#0" expanded="true" />
+                    <element signature="e#5917#5918#0" expanded="true" />
+                    <element signature="e#6036#6037#0" expanded="true" />
+                    <element signature="e#6157#6158#0" expanded="true" />
+                    <element signature="e#6222#6223#0" expanded="true" />
+                    <element signature="e#6287#6288#0" expanded="true" />
+                  </folding>
                 </state>
               </provider>
             </entry>
@@ -35,39 +43,75 @@
         </leaf>
       </split-first>
       <split-second>
-        <leaf>
+        <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
           <file pinned="false" current-in-tab="true">
             <entry file="file://$PROJECT_DIR$/src/test/java/ArrazTest.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="161">
-                  <caret line="7" column="29" lean-forward="true" selection-start-line="7" selection-start-column="29" selection-end-line="7" selection-end-column="29" />
+                <state relative-caret-position="3634">
+                  <caret line="158" column="27" selection-start-line="158" selection-start-column="27" selection-end-line="158" selection-end-column="27" />
                   <folding>
                     <element signature="imports" expanded="true" />
+                    <element signature="e#3882#3883#0" expanded="true" />
+                    <element signature="e#3950#3951#0" expanded="true" />
                   </folding>
                 </state>
               </provider>
             </entry>
           </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/main/java/MaxMin.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="230">
+                  <caret line="10" column="49" selection-start-line="10" selection-start-column="49" selection-end-line="10" selection-end-column="49" />
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/main/java/OddEven.java">
+              <provider selected="true" editor-type-id="text-editor" />
+            </entry>
+          </file>
         </leaf>
       </split-second>
     </splitter>
   </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
+      </list>
+    </option>
+  </component>
+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>remove</find>
+      <find>remov</find>
+      <find>new Integ</find>
+      <find>int</find>
+    </findStrings>
+    <replaceStrings>
+      <replace>Integer</replace>
+    </replaceStrings>
+  </component>
   <component name="Git.Settings">
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/.." />
   </component>
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
+        <option value="$PROJECT_DIR$/src/main/java/OddEven.java" />
+        <option value="$PROJECT_DIR$/src/main/java/MaxMin.java" />
         <option value="$PROJECT_DIR$/src/main/java/Arraz.java" />
         <option value="$PROJECT_DIR$/src/test/java/ArrazTest.java" />
       </list>
     </option>
   </component>
-  <component name="ProjectFrameBounds">
-    <option name="x" value="16" />
-    <option name="y" value="23" />
-    <option name="width" value="1228" />
-    <option name="height" value="748" />
+  <component name="ProjectFrameBounds" fullScreen="true">
+    <option name="x" value="-345" />
+    <option name="y" value="-1080" />
+    <option name="width" value="1920" />
+    <option name="height" value="1080" />
   </component>
   <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
   <component name="ProjectView">
@@ -76,7 +120,6 @@
     </navigator>
     <panes>
       <pane id="Scope" />
-      <pane id="PackagesPane" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -119,16 +162,17 @@
           <select />
         </subPane>
       </pane>
+      <pane id="PackagesPane" />
     </panes>
   </component>
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1544155039323" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1544297521528" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$/pom.xml" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
-    <property name="settings.editor.selected.configurable" value="MTConfigurable" />
+    <property name="settings.editor.selected.configurable" value="preferences.pluginManager" />
   </component>
   <component name="RunDashboard">
     <option name="ruleStates">
@@ -142,12 +186,50 @@
       </list>
     </option>
   </component>
-  <component name="RunManager">
-    <configuration name="ArrazTest.testSumValsOfArr" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+  <component name="RunManager" selected="JUnit.ArrazTest">
+    <configuration name="ArrazTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="arraz" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="ArrazTest" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ArrazTest.testInsertAtEnd" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="arraz" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="ArrazTest" />
+      <option name="METHOD_NAME" value="testInsertAtEnd" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ArrazTest.testInsertAtIndex" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="arraz" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="ArrazTest" />
+      <option name="METHOD_NAME" value="testInsertAtIndex" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ArrazTest.testInsertAtStart" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="arraz" />
+      <option name="PACKAGE_NAME" value="" />
+      <option name="MAIN_CLASS_NAME" value="ArrazTest" />
+      <option name="METHOD_NAME" value="testInsertAtStart" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ArrazTest.testMaxMin" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="arraz" />
       <option name="PACKAGE_NAME" value="" />
       <option name="MAIN_CLASS_NAME" value="ArrazTest" />
-      <option name="METHOD_NAME" value="testSumValsOfArr" />
+      <option name="METHOD_NAME" value="testMaxMin" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
@@ -155,12 +237,16 @@
     </configuration>
     <recent_temporary>
       <list>
-        <item itemvalue="JUnit.ArrazTest.testSumValsOfArr" />
+        <item itemvalue="JUnit.ArrazTest" />
+        <item itemvalue="JUnit.ArrazTest.testInsertAtStart" />
+        <item itemvalue="JUnit.ArrazTest.testInsertAtEnd" />
+        <item itemvalue="JUnit.ArrazTest.testInsertAtIndex" />
+        <item itemvalue="JUnit.ArrazTest.testMaxMin" />
       </list>
     </recent_temporary>
   </component>
   <component name="SvnConfiguration">
-    <configuration />
+    <configuration>$USER_HOME$/.subversion</configuration>
   </component>
   <component name="TaskManager">
     <task active="true" id="Default" summary="Default task">
@@ -169,51 +255,81 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1544151809976</updated>
-      <workItem from="1544151813460" duration="2687000" />
+      <workItem from="1544151813460" duration="21120000" />
+      <workItem from="1544218395041" duration="11180000" />
+      <workItem from="1544240763762" duration="101000" />
+      <workItem from="1544240892972" duration="7355000" />
     </task>
     <servers />
   </component>
   <component name="TestHistory">
-    <history-entry file="ArrazTest_testSumValsOfArr - 2018.12.06 at 22h 51m 00s.xml">
-      <configuration name="ArrazTest.testSumValsOfArr" configurationId="JUnit" />
+    <history-entry file="ArrazTest_testInsertAtIndex - 2018.12.08 at 14h 00m 26s.xml">
+      <configuration name="ArrazTest.testInsertAtIndex" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testInsertAtIndex - 2018.12.08 at 14h 00m 49s.xml">
+      <configuration name="ArrazTest.testInsertAtIndex" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testMaxMin - 2018.12.08 at 14h 09m 54s.xml">
+      <configuration name="ArrazTest.testMaxMin" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testMaxMin - 2018.12.08 at 14h 11m 15s.xml">
+      <configuration name="ArrazTest.testMaxMin" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testMaxMin - 2018.12.08 at 14h 13m 40s.xml">
+      <configuration name="ArrazTest.testMaxMin" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testInsertAtIndex - 2018.12.08 at 14h 14m 42s.xml">
+      <configuration name="ArrazTest.testInsertAtIndex" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest - 2018.12.08 at 14h 24m 33s.xml">
+      <configuration name="ArrazTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testInsertAtStart - 2018.12.08 at 14h 25m 26s.xml">
+      <configuration name="ArrazTest.testInsertAtStart" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testInsertAtEnd - 2018.12.08 at 14h 27m 25s.xml">
+      <configuration name="ArrazTest.testInsertAtEnd" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ArrazTest_testInsertAtStart - 2018.12.08 at 14h 27m 35s.xml">
+      <configuration name="ArrazTest.testInsertAtStart" configurationId="JUnit" />
     </history-entry>
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="2687000" />
+    <option name="totallyTimeSpent" value="39756000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="16" y="23" width="1228" height="748" extended-state="0" />
+    <frame x="-345" y="-1080" width="1920" height="1080" extended-state="0" />
     <editor active="true" />
     <layout>
-      <window_info id="Image Layers" />
-      <window_info id="Designer" />
-      <window_info id="UI Designer" />
-      <window_info id="Capture Tool" />
-      <window_info id="Favorites" side_tool="true" />
-      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.13996628" />
+      <window_info content_ui="combo" id="Project" order="0" weight="0.07028754" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info anchor="bottom" id="Messages" />
-      <window_info anchor="bottom" id="Docker" show_stripe_button="false" />
-      <window_info anchor="bottom" id="Database Changes" />
-      <window_info anchor="bottom" id="Version Control" />
-      <window_info anchor="bottom" id="Terminal" />
-      <window_info anchor="bottom" id="Event Log" side_tool="true" />
+      <window_info id="Image Layers" order="2" />
+      <window_info id="Designer" order="3" />
+      <window_info id="UI Designer" order="4" />
+      <window_info id="Capture Tool" order="5" />
+      <window_info id="Favorites" order="6" side_tool="true" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.3296875" />
-      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.37424546" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.30784708" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
       <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="right" id="Palette" />
-      <window_info anchor="right" id="Theme Preview" />
-      <window_info anchor="right" id="Maven" />
-      <window_info anchor="right" id="Capture Analysis" />
-      <window_info anchor="right" id="Palette&#9;" />
-      <window_info anchor="right" id="Database" />
+      <window_info anchor="bottom" id="Docker" order="7" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Version Control" order="8" />
+      <window_info anchor="bottom" id="Database Changes" order="9" />
+      <window_info anchor="bottom" id="Terminal" order="10" weight="0.3296875" />
+      <window_info anchor="bottom" id="Event Log" order="11" side_tool="true" />
+      <window_info anchor="bottom" id="Messages" order="12" weight="0.3138833" />
       <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
       <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+      <window_info anchor="right" id="Palette" order="3" />
+      <window_info anchor="right" id="Database" order="4" />
+      <window_info anchor="right" id="Theme Preview" order="5" />
+      <window_info anchor="right" id="Maven" order="6" />
+      <window_info anchor="right" id="Capture Analysis" order="7" />
+      <window_info anchor="right" id="Palette&#9;" order="8" />
     </layout>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -223,19 +339,64 @@
     <entry file="file://$PROJECT_DIR$/pom.xml">
       <provider selected="true" editor-type-id="text-editor" />
     </entry>
+    <entry file="jar:///Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/src.zip!/java/util/ArrayList.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="224">
+          <caret line="486" column="12" selection-start-line="486" selection-start-column="7" selection-end-line="486" selection-end-column="12" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar:///Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/src.zip!/java/util/List.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="169">
+          <caret line="210" column="12" selection-start-line="210" selection-start-column="12" selection-end-line="210" selection-end-column="12" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://$MAVEN_REPOSITORY$/junit/junit/4.0/junit-4.0.jar!/org/junit/internal/runners/TestMethodRunner.class">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="352">
+          <caret line="94" selection-start-line="94" selection-end-line="94" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/MaxMin.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="230">
+          <caret line="10" column="49" selection-start-line="10" selection-start-column="49" selection-end-line="10" selection-end-column="49" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/OddEven.java">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/Arraz.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="414">
-          <caret line="18" lean-forward="true" selection-start-line="18" selection-end-line="18" />
+        <state relative-caret-position="557">
+          <caret line="206" column="50" selection-start-line="206" selection-start-column="50" selection-end-line="206" selection-end-column="50" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#5210#5211#0" expanded="true" />
+            <element signature="e#5274#5275#0" expanded="true" />
+            <element signature="e#5791#5792#0" expanded="true" />
+            <element signature="e#5843#5844#0" expanded="true" />
+            <element signature="e#5917#5918#0" expanded="true" />
+            <element signature="e#6036#6037#0" expanded="true" />
+            <element signature="e#6157#6158#0" expanded="true" />
+            <element signature="e#6222#6223#0" expanded="true" />
+            <element signature="e#6287#6288#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/ArrazTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="161">
-          <caret line="7" column="29" lean-forward="true" selection-start-line="7" selection-start-column="29" selection-end-line="7" selection-end-column="29" />
+        <state relative-caret-position="3634">
+          <caret line="158" column="27" selection-start-line="158" selection-start-column="27" selection-end-line="158" selection-end-column="27" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#3882#3883#0" expanded="true" />
+            <element signature="e#3950#3951#0" expanded="true" />
           </folding>
         </state>
       </provider>

arraz/src/main/java/Arraz.java

@@ -1,18 +1,218 @@
+import java.util.*;
 
 public class Arraz {
 
-    public Arraz() {
-    }
+    public Arraz() {}
+
     public Integer sumValuesOfArray(Integer[] nums){
         int sum = 0;
         for(Integer i : nums)
             sum += i;
         return sum;
     }
-    public Double sumValuesOfArray(Double[] nums){
+    public Double sumDoublesOfArray(Double[] nums){
         double sum = 0;
         for(Double i : nums)
             sum += i;
         return sum;
     }
+    public Integer averageOfArray(Integer[] nums) {
+        return sumValuesOfArray(nums)/nums.length;
+    }
+
+    public Double doubleAverageOfArray(Double[] numsDbl){
+        return sumDoublesOfArray(numsDbl)/numsDbl.length;
+    }
+
+    public boolean contains(Integer[] nums, int i){
+        for (Integer val : nums)
+            if (val == i)
+                return true;
+        return false;
+    }
+
+    public Integer[] reverseArray(Integer[] nums){
+        Integer[] rev = new Integer[nums.length];
+        for(int i = nums.length-1, j = 0; i >= 0; i--,j++)
+            rev[j] = nums[i];
+        return rev;
+    }
+
+    public String toString(Integer[] nums){
+        String str = "ArrayVals: ";
+        for(Integer i : nums)
+            str += i + " ";
+        return str;
+    }
+
+    public String toString(ArrayList<Integer>nums){
+        String str = "ArrayVals: ";
+        for(Integer i : nums)
+            str += i + " ";
+        return str;
+    }
+
+    public OddEven getOddEvensOfArray(Integer[] nums){
+        int odds = 0, evens = 0;
+         for(Integer i : nums) {
+            odds += (i % 2 == 0) ? 1 : 0;
+            evens += (i % 2 == 0) ? 0 : 1;
+        }
+        return new OddEven(odds,evens);
+    }
+
+    public int findIndexOf(Object[] objArr, Object val){
+        for(int i = 0; i < objArr.length; i++)
+            if(objArr[i] == val)
+                return i;
+        return -1;
+    }
+
+    public Integer[] copyArrayByIterator(Integer[] nums){
+        Iterator<Integer> itr = Arrays.asList(nums).iterator();
+        Integer[] copy = new Integer[nums.length];
+        int i = 0;
+        while(itr.hasNext())
+            copy[i++] = itr.next();
+        return copy;
+    }
+
+    public Integer[] copyArrayByLoop(Integer[] nums){
+        Integer[] copy = new Integer[nums.length];
+        for(int i = 0;i < nums.length; i++)
+            copy[i] = nums[i];
+        return copy;
+    }
+
+    public Integer[] removeElementFromArray(Integer[] nums, int val){
+         if(contains(nums,val)) {
+             Integer[] newArr = new Integer[nums.length - 1];
+             int index = 0;
+             for (Integer i : nums)
+                 if (val != i)
+                     newArr[index++] = i;
+             return newArr;
+         } else
+             return nums;
+    }
+
+    public Integer[] insertIntoArrayAt(Integer[] nums,Integer index, Integer val) throws IndexOutOfBoundsException{
+      try {
+          Integer[] newArr = new Integer[nums.length + 1];
+          for(int i = 0; i < newArr.length; i++){
+              if(i < index)
+                  newArr[i] = nums[i];
+              else if(index == i)
+                  newArr[i] = val;
+              else
+                  newArr[i] = nums[i-1];
+          }
+          return newArr;
+      } catch (IndexOutOfBoundsException e) {
+          e.printStackTrace();
+      }
+      return nums;
+    }
+
+    public MaxMin findMaxMinOfArray(Integer[] nums){
+        Integer min = getExtrema(nums)[0];
+        Integer max = getExtrema(nums)[1];
+        return new MaxMin(min,max);
+    }
+    public static Integer[] getExtrema(Integer[] nums) {
+        int max = nums[0], min = nums[0];
+        for (int i = 1; i < nums.length; i++) {
+            if (nums[i] > max)
+                max = nums[i];
+            else if (nums[i] < min)
+                min = nums[i];
+        }
+        return new Integer[] {min,max};
+    }
+
+    public Integer[] removeDupesFromArray(Integer[] nums) {
+        SortedSet<Integer> set = new TreeSet<>(Arrays.asList(nums));
+        List<Integer> list = new ArrayList<>(set);
+        return list.toArray(new Integer[0]);
+    }
+
+    public Integer find2ndLargestValueFromArray(Integer[] nums){
+        SortedSet<Integer> set = new TreeSet<>(Arrays.asList(nums));
+        List<Integer> list = new ArrayList<>(set);
+        return list.get(list.size()-2);
+    }
+
+    public ArrayList<Integer> makeMeAnArrayListFromArray(Integer[] nums){
+        ArrayList<Integer> list = new ArrayList<>(Arrays.asList(nums));
+        return list;
+    }
+
+    public Integer[] makeMeAnArrayFromArrayList(ArrayList<Integer> list){
+        return list.toArray(new Integer[0]);
+    }
+
+    public boolean check2ArraysForEqual(Integer[] arr1, Integer[] arr2) {
+        for (int i = 0; i < arr1.length; i++)
+            if(arr1[i] != arr2[i])
+                return false;
+        return true;
+    }
+
+    public double averageArrayWithoutMaxMin(Integer[] nums){
+        Integer max = findMaxMinOfArray(nums).max;
+        Integer[] result = removeElementFromArray(nums, max);
+        Integer min = findMaxMinOfArray(result).min;
+        Integer[] ouput = removeElementFromArray(result, min);
+        return sumValuesOfArray(ouput)/(double)ouput.length;
+    }
+
+    public boolean arrayHas65and77(Integer[] nums){
+        return (contains(nums, 65) && contains(nums,77));
+    }
+
+    public boolean totalOfTensIs30(Integer[] nums){
+        int sum = 0;
+        for(int i: nums)
+            if(i == 10)
+                sum++;
+        return (sum == 3);
+    }
+
+    public Integer find2ndSmallestValueFromArray(Integer[] nums){
+        Integer mini = findMaxMinOfArray(nums).min;
+        Integer[] noMin = removeElementFromArray(nums, mini);
+        return findMaxMinOfArray(noMin).min;
+    }
+
+    public Integer[] reverseCopyOfArray(Integer[] nums){
+        return reverseArray(nums);
+    }
+
+    public Integer[] removeLastItem(Integer[] nums){
+        return removeElementFromArray(nums, nums[nums.length - 1]);
+    }
+
+    public Integer[] removeFirstItem(Integer[] nums){
+        return removeElementFromArray(nums, nums[0]);
+    }
+
+    public Integer[] insertAtStart(Integer[] nums, Integer val){
+        return insertIntoArrayAt(nums, 0, val);
+    }
+
+    public Integer[] insertAtEnd(Integer[] nums, Integer val){
+        return insertIntoArrayAt(nums,nums.length, val);
+    }
+
+    public Integer[] sortArrayIntoEvensThenOdds(Integer[] nums){
+        Integer[] result = new Integer[nums.length];
+        Integer front = 0;
+        Integer back = nums.length - 1;
+        for (int i : nums)
+            if(i % 2 == 0)
+                result[front++] = i;
+            else
+                result[back--] = i;
+        return result;
+    }
 }

arraz/src/main/java/MaxMin.java

@@ -0,0 +1,13 @@
+public class MaxMin {
+    public int max, min;
+    public MaxMin(int min, int max){
+        this.min = min;
+        this.max = max;
+    }
+
+    @Override
+    public boolean equals(Object o){
+        MaxMin maxMin = (MaxMin) o;
+        return (maxMin.min == min && maxMin.max == max);
+    }
+}

arraz/src/main/java/OddEven.java

@@ -0,0 +1,13 @@
+public class OddEven {
+    public int odds, evens;
+    public OddEven(int odds, int evens){
+        this.odds = odds;
+        this.evens = evens;
+    }
+
+    @Override
+    public boolean equals(Object o){
+        OddEven oddEven = (OddEven) o;
+        return (oddEven.evens == evens || oddEven.odds == odds);
+    }
+}

arraz/src/test/java/ArrazTest.java

@@ -1,14 +1,234 @@
 import junit.framework.Assert;
 import org.junit.Test;
+import java.util.ArrayList;
 
 public class ArrazTest {
     Arraz arraz = new Arraz();
-
+    Integer[] nums = {3,4,5,6};
+    Double[] numsDbl = {3D,4D,5D,6D};
     @Test
-    public void testSumValsOfArr(){
-        Integer[] nums = {3,4,5,6};
+   public void testSumValsOfArrInt(){
         Integer actual = arraz.sumValuesOfArray(nums);
         Assert.assertEquals(18,(int)actual);
     }
+    @Test
+    public void testSumValsOfArrDub(){
+        Double actual = arraz.sumDoublesOfArray(numsDbl);
+        Assert.assertEquals(18,actual,0);
+    }
+
+    @Test
+    public void testAvgArray(){
+        Integer actual = arraz.averageOfArray(nums);
+        Assert.assertEquals(4,(int)actual);
+    }
+
+    @Test
+    public void testAvgArrayDbl(){
+        Double actual = arraz.doubleAverageOfArray(numsDbl);
+        Assert.assertEquals(4.5, actual,0);
+    }
+
+    @Test
+    public void testContains(){
+        boolean actual = arraz.contains(nums, 3);
+        Assert.assertEquals(true, actual);
+    }
+
+    @Test
+    public void testReverseArr(){
+        Integer[] exp = {6,5,4,3};
+        Integer[] act = arraz.reverseArray(nums);
+        Assert.assertEquals(arraz.toString(act),arraz.toString(exp));
+    }
+
+    @Test
+    public void testOddEven(){
+        OddEven exp = new OddEven(2,2);
+        OddEven act = arraz.getOddEvensOfArray(nums);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testFindIndex(){
+        int actual = arraz.findIndexOf(nums,4);
+        Assert.assertEquals(1,actual);
+    }
+
+    @Test
+    public void testCpyByItr(){
+        Integer[] actArr = arraz.copyArrayByIterator(nums);
+        String exp = arraz.toString(nums);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testCpyByLoop(){
+        Integer[] actArr = arraz.copyArrayByLoop(nums);
+        String exp = arraz.toString(nums);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testRemoveArrayElement(){
+        Integer[] actArr = arraz.removeElementFromArray(nums,4);
+        String exp = "ArrayVals: 3 5 6 ";
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testInsertAtIndex(){
+        String exp = "ArrayVals: 1 3 4 5 6 ";
+        Integer[] actArr = arraz.insertIntoArrayAt(nums, 0,  1);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testMaxMin(){
+        MaxMin extrema = new MaxMin(3,6);
+        MaxMin actExtrema = arraz.findMaxMinOfArray(nums);
+        Assert.assertEquals(extrema,actExtrema);
+    }
+    @Test
+    public void testRemoveDups(){
+        Integer[] testArr = {3,4,5,6,6,7,8,8,8,9};
+        String exp = arraz.toString(new Integer[] {3,4,5,6,7,8,9});
+        Integer[] actArr = arraz.removeDupesFromArray(testArr);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void test2ndLargest(){
+        Integer[] nums2 = {5,2,5,6,8,2,1};
+        Integer expected = 6;
+        Integer actual = arraz.find2ndLargestValueFromArray(nums2);
+        Assert.assertEquals(expected,actual);
+    }
+
+    @Test
+    public void testArrListFromArr(){
+        String exp = "ArrayVals: 3 4 5 6 ";
+        ArrayList<Integer> list = arraz.makeMeAnArrayListFromArray(nums);
+        Assert.assertEquals(exp,arraz.toString(list));
+    }
+
+    @Test
+    public void testArrayFromArrList(){
+        // : Given
+        ArrayList<Integer> list = new ArrayList<>();
+        // : When
+        list.add(1);
+        list.add(2);
+        String exp = "ArrayVals: 1 2 ";
+        Integer[] act = arraz.makeMeAnArrayFromArrayList(list);
+        // : Then
+        Assert.assertEquals(exp, arraz.toString(act));
+    }
+
+    @Test
+    public void test1check2ArraysEqual() {
+        Assert.assertTrue(arraz.check2ArraysForEqual(nums, nums));
+    }
+
+    @Test
+    public void test2check2ArraysEqual() {
+        Integer[] arr = {1,2,3,4};
+        Assert.assertFalse(arraz.check2ArraysForEqual(arr, nums));
+    }
+
+    @Test
+    public void test1averageWOMaxMin() {
+        Integer[] arr = {2,5,1,4};
+        double actual = arraz.averageArrayWithoutMaxMin(arr);
+        Assert.assertEquals(3.0, actual,0);
+    }
+
+    @Test
+    public void test2arrayHas65and77() {
+        Integer[] arr = {65,77,1};
+        Assert.assertTrue(arraz.arrayHas65and77(arr));
+    }
+
+    @Test
+    public void testTensTotal30False() {
+        Integer[] arr = {1,10};
+        Assert.assertFalse(arraz.totalOfTensIs30(arr));
+    }
+
+    @Test
+    public void testTensTotal30True() {
+        Integer[] arr = {1,10,2,10,3,10};
+        Assert.assertTrue(arraz.totalOfTensIs30(arr));
+    }
+
+    @Test
+    public void testFind2ndSmallest() {
+        Integer[] arr = {1,2,3,4};
+        Integer expected = 2;
+        Integer actual = arraz.find2ndSmallestValueFromArray(arr);
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testReverseCopy() {
+        Integer[] arr = {1,2,3};
+        String exp = arraz.toString(new Integer[] {3,2,1});
+        Integer[] actArr = arraz.reverseCopyOfArray(arr);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testRemoveLastItem() {
+        Integer[] arr = {3,2,1,0};
+        String exp = arraz.toString(new Integer[] {3,2,1});
+        Integer[] actArr = arraz.removeLastItem(arr);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testRemoveFirstItem() {
+        Integer[] arr = {3,2,1,0};
+        String exp = arraz.toString(new Integer[] {2,1,0});
+        Integer[] actArr = arraz.removeFirstItem(arr);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testInsertAtStart() {
+        Integer[] arr = {3,2,1,0};
+        Integer numb = 100;
+        String exp = arraz.toString(new Integer[] {100,3,2,1,0});
+        Integer[] actArr = arraz.insertAtStart(arr, numb);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testInsertAtEnd() {
+        Integer[] arr = {3,2,1,0};
+        Integer num = 100;
+        String exp = arraz.toString(new Integer[] {3,2,1,0,100});
+        Integer[] actArr = arraz.insertAtEnd(arr, num);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testSortEvenOdd() {
+        Integer[] arr = {3,2,1,0};
+        String exp = arraz.toString(new Integer[] {2,0,1,3});
+        Integer[] actArr = arraz.sortArrayIntoEvensThenOdds(arr);
+        String act = arraz.toString(actArr);
+        Assert.assertEquals(exp,act);
+    }
+
 
 }