updating arrays

arraz/.idea/workspace.xml

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arraz/src/main/java/MoreArrayc.java

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
+import java.util.List;
 import java.util.regex.Pattern;
 
 public class MoreArrayc {
 
     public Integer[] insertAtStartAndCopy(Integer[] arr,int value){
 
-        return null;
+        List<Integer> list = new ArrayList<>();
+        list.addAll(Arrays.asList(arr));
+        list.add(0, value);
+
+        //Then
+
+        return arr = list.toArray(new Integer[list.size()]);
+
+    }
+
+    public Integer[] insertAtLastAndCopy(Integer[] arr,int value){
+
+        arr = Arrays.copyOf(arr,arr.length +1);
+        arr[arr.length-1] = value;
+
+        //Then
+
+        return arr;
 
     }
 
 
 //   averageArrayWithoutMaxMin
 
-
-//    insertAtStartAndCopy
-//    insertAtEndAndCopy
-//    sortArrayIntoEvensThenOdds

arraz/src/test/java/MoreArraysTest.java

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
+import java.util.List;
 
 public class MoreArraysTest {
 
     }
 
     @Test
-    public void insertFirstThenCopyTEST(){
+    public void insertfirstThenCopyTEST() {
 
         //Given
 
-        Integer [] arr = {5,1,7,8,9,4,3};
+        Integer[] arr = {5, 1, 7, 8, 9, 4, 3};
         int value = 6;
+        Integer[] arr2 = {6, 5, 1, 7, 8, 9, 4, 3};
+
 
         //When
 
-        
-        arr[0] = value;
+       Integer[] actual = more.insertAtStartAndCopy(arr,value);
+
         //Then
-        for (int i = 0; i < arr.length-1 ; i++) {
-            System.out.println(arr);
-        }
 
 
 
 
+        Assert.assertEquals(arr2, actual);
+
+    }
+    @Test
+    public void insertLastThenCopyTEST(){
+
+        //Given
+
+        Integer [] arr = {5,1,7,8,9,4,3};
+        int value = 6;
+
+        Integer[] arr2 = {5,1,7,8,9,4,3,6};
+
+
+
+        //When
+
+        Integer[] actual = more.insertAtLastAndCopy(arr,value);
+
+        //Then
+
+
+        Assert.assertEquals(arr2,actual);
+
     }