completed Lab

.idea/workspace.xml

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arraz/src/main/java/Arraz.java

     public int[] reverse(int[] arr) {
         for(int i = 0; i<arr.length/2; i++){
            int temp = arr[i];
-           arr[i]=arr[arr.length-1];
-           arr[arr.length-1-i]=temp;
+           arr[i]=arr[arr.length-i-1];
+           arr[arr.length-i-1]=temp;
         }
         return arr;
     }
     }
 
     public int[] removeElement(int[] arr, int val) {
-        int[] result = new int[arr.length];
+        int[] result = new int[arr.length-1];
+        int count =0;
         for(int i=0; i<arr.length; i++){
-            if(arr[i]!=val)
-            result[i]=arr[i];
+            if(arr[i]!=val){
+            result[count]=arr[i];
+            count++;}
         }
         return result;
     }
 
     public int[] insertIntoArrayAt(int[] arr, int val, int index) {
+       if (index> arr.length+1) throw new ArrayIndexOutOfBoundsException();
         int[] result = new int[arr.length+1];
         int counter = 0;
         for (int i = 0; i <result.length; i++) {
         }
         return result;
     }
+
+    public int find2ndLargest(int[] arr) {
+        Arrays.sort(arr);
+        return arr[arr.length-2];
+    }
+
+    public ArrayList<Integer> makeArrayList(int[] arr) {
+        ArrayList<Integer> result = new ArrayList<Integer>();
+        for (int i : arr) {
+            result.add((Integer)i);
+        }
+        return result;
+    }
+
+    public int[] makeArray(ArrayList<Integer> list) {
+        int[] result = new int[list.size()];
+        for (int i = 0; i < list.size(); i++) {
+            result[i]=(int)list.get(i);
+        }
+        return result;
+    }
+
+    public boolean check2Arrays(int[] arr1, int[] arr2) {
+        if(arr1.length!=arr2.length) return false;
+        for (int i = 0; i < arr1.length; i++) {
+            if(arr1[i] != arr2[i]) return false;
+        }
+        return true;
+    }
+
+    public int averageWithoutMinMax(int[] arr) {
+        Arrays.sort(arr);
+        int result = 0;
+        for (int i = 1; i < arr.length-1; i++) {
+            result += arr[i];
+        }
+        return result/(arr.length-2);
+    }
+
+    public boolean has65and77(int[] testArr) {
+        boolean contains65 = false;
+        boolean contains77 = false;
+        for (int i: testArr) {
+            if (i ==65) contains65=true;
+            if (i==77) contains77=true;
+        }
+        return (contains65&&contains77);
+    }
+
+    public boolean toalOf10sIs30(int[] arr) {
+        int tenCount = 0;
+        for (int i : arr) {
+            if (i==10) tenCount++;
+        }
+        return (tenCount==3);
+    }
+
+    public int[] makeCopyReverse(int[] arr) {
+      return reverse(copyArrayByLoop(arr));
+    }
+
+    public int[] removeLastAndCopy(int[] arr) {
+        return copyArrayByLoop(removeElement(arr,arr[arr.length-1]));
+    }
+
+    public int[] removeFirstAndCopy(int[] arr) {
+        return copyArrayByLoop(removeElement(arr,arr[0]));
+    }
+
+    public int[] insertFirstAndCopy(int[] arr, int i) {
+        return copyArrayByLoop(insertIntoArrayAt(arr, i, 0));
+    }
+
+    public int[] insertEndAndCopy(int[] arr, int i) {
+        return copyArrayByLoop(insertIntoArrayAt(arr, i, arr.length));
+    }
+
+    public int[] sortArrayEvenOdd(int[] arr) {
+        ArrayList<Integer> evens = new ArrayList<Integer>();
+        ArrayList<Integer> odds = new ArrayList<Integer>();
+        int[] result = new int[arr.length];
+        int count = 0;
+        for (int i: arr) {
+            if(i%2==0) evens.add(i);
+            else odds.add(i);
+        }
+        for (Integer j: evens) {
+            result[count]=j;
+            count++;
+        }
+        for (Integer k:odds) {
+            result[count]=k;
+            count++;
+        }
+        return result;
+    }
 }

arraz/src/test/java/ArrazTest.java

 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.ArrayList;
+
 import static org.junit.Assert.*;
 
 public class ArrazTest {
 
     @Test
     public void test1ReverseArray(){
-        int[] arr = new int[] {8,92,-32,12,-7,6,102,5,4};
-        Assert.assertEquals(arraz.reverse(spiffyHandyIntArray), spiffyHandyIntArray);
+        int[] expected = new int[] {8,92,-32,12,-7,6,102,5,4};
+        int[] actual = arraz.reverse(spiffyHandyIntArray);
+        for (int i = 0; i <actual.length ; i++) {
+            Assert.assertEquals(expected[i],actual[i]);
+        }
     }
 
     @Test
     public void test2ReverseArray(){
-        int[] arr = new int[] {8,92,-32,12,-7,6,102,5,4};
-        Assert.assertNotSame(arraz.reverse(spiffyHandyIntArray), arr);
+        int[] expected = new int[] {1,2,3};
+        int[] actual = arraz.reverse(expected);
+        for (int i = 0; i <actual.length ; i++) {
+            Assert.assertEquals(expected[i],actual[i]);
+        }
     }
 
     @Test
 
     @Test
     public void test2RemoveElement(){
-        int [] arr = arraz.removeElement(spiffyHandyIntArray, 1);
-        Assert.assertFalse(arraz.containsValue(arr, 1));
+        int [] arr = arraz.removeElement(spiffyHandyIntArray, 4);
+        Assert.assertFalse(arraz.containsValue(arr, 4));
     }
 
     @Test
     }
 
     @Test
-    
+    public void test1Find2ndLargest(){
+        int result = arraz.find2ndLargest(spiffyHandyIntArray);
+        Assert.assertEquals(92, result);
+    }
+
+    @Test
+    public void test2Find2ndLargest(){
+        int[] arr = new int[]{-4,-3,-5,-2,-8,-2,-5};
+        int result = arraz.find2ndLargest(arr);
+        Assert.assertEquals(-2, result);
+    }
+
+    @Test
+    public void test1MakeArrayList(){
+        ArrayList<Integer> list = arraz.makeArrayList(spiffyHandyIntArray);
+        Assert.assertEquals(list.getClass(), ArrayList.class);
+    }
+
+    @Test
+    public void test2MakeArrayList(){
+        ArrayList<Integer> list = arraz.makeArrayList(spiffyHandyIntArray);
+        Assert.assertEquals(spiffyHandyIntArray.length, list.size());
+    }
+
+    @Test
+    public void test1MakeArray(){
+        ArrayList<Integer> list = new ArrayList<Integer>();
+        list.add(4);
+        list.add(3);
+        list.add(9);
+        list.add(8);
+        int[] arr = arraz.makeArray(list);
+        Assert.assertEquals(arr.getClass(), int[].class);
+    }
+
+    @Test
+    public void test2MakeArray(){
+        ArrayList<Integer> list = new ArrayList<Integer>();
+        list.add(4);
+        list.add(3);
+        list.add(9);
+        list.add(8);
+        int[] arr = arraz.makeArray(list);
+        Assert.assertEquals(list.size(), arr.length);
+    }
+
+    @Test
+    public void test1Check2Arrays(){
+        int[] testArr = new int[] {4,5,102,6,-7,12,-32,92,8};
+        boolean actual = arraz.check2Arrays(testArr,spiffyHandyIntArray);
+        Assert.assertTrue(actual);
+    }
+
+    @Test
+    public void test2Check2Arrays(){
+        int[] testArr = new int[] {4,5,102,6,-7,44,-32,92,8};
+        boolean actual = arraz.check2Arrays(testArr,spiffyHandyIntArray);
+        Assert.assertFalse(actual);
+    }
+
+    @Test
+    public void test1AverageWithoutMinMax(){
+        int actual = arraz.averageWithoutMinMax(spiffyHandyIntArray);
+        Assert.assertEquals(17, actual);
+    }
+
+    @Test
+    public void test2AverageWithoutMinMax(){
+        int[] testArr = new int[] {4,3,2,6,7,4,1};
+        int actual = arraz.averageWithoutMinMax(testArr);
+        Assert.assertEquals(3, actual);
+    }
+
+    @Test
+    public void test1Has65and77(){
+        int[] testArr = new int[] {4,3,2,6,7,4,1};
+        boolean actual = arraz.has65and77(testArr);
+        Assert.assertFalse(actual);
+    }
+
+    @Test
+    public void test2Has65and77(){
+        int[] testArr = new int[] {4,3,65,2,6,7,77,4,1};
+        boolean actual = arraz.has65and77(testArr);
+        Assert.assertTrue(actual);
+    }
+
+    @Test
+    public void test1TotalOf10sIs30(){
+        int[] testArr = new int[] {4,3,65,2,6,7,77,4,1};
+        boolean actual = arraz.toalOf10sIs30(testArr);
+        Assert.assertFalse(actual);
+    }
+
+    @Test
+    public void test2TotalOf10sIs30(){
+            int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+            boolean actual = arraz.toalOf10sIs30(testArr);
+            Assert.assertTrue(actual);
+    }
+
+    @Test
+    public void test1makeCopyReverse(){
+        int[] actual = arraz.makeCopyReverse(spiffyHandyIntArray);
+        int[] arr = new int[] {8,92,-32,12,-7,6,102,5,4};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2makeCopyReverse(){
+        int[] testArr = new int[] {4,3,2,6,7,4,1};
+        int[] actual = arraz.makeCopyReverse(testArr);
+        int[] arr = new int[] {1,4,7,6,2,3,4};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test1removeLastAndCopy(){
+        int[] testArr = new int[] {4,3,2,33,7,4,1};
+        int[] actual = arraz.removeLastAndCopy(testArr);
+        int[] arr = new int[] {4,3,2,33,7,4};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2removeLastAndCopy(){
+        int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+        int[] actual = arraz.removeLastAndCopy(testArr);
+        Assert.assertEquals(testArr.length-1,actual.length);
+    }
+
+    @Test
+    public void test1removeFirstAndCopy(){
+        int[] testArr = new int[] {4,3,2,33,7,9,1};
+        int[] actual = arraz.removeFirstAndCopy(testArr);
+        int[] arr = new int[] {3,2,33,7,9,1};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2removeFirstAndCopy(){
+        int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+        int[] actual = arraz.removeFirstAndCopy(testArr);
+       Assert.assertEquals(testArr.length-1, actual.length);
+    }
+
+    @Test
+    public void test1insertFirstAndCopy(){
+        int[] testArr = new int[] {4,3,2,33,7,9,1};
+        int[] actual = arraz.insertFirstAndCopy(testArr, 1);
+        int[] arr = new int[] {1,4,3,2,33,7,9,1};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2insertFirstAndCopy(){
+        int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+        int[] actual = arraz.insertFirstAndCopy(testArr,2);
+        Assert.assertEquals(testArr.length+1, actual.length);
+    }
+
+    @Test
+    public void test1insertEndAndCopy(){
+        int[] testArr = new int[] {4,3,2,33,7,9,1};
+        int[] actual = arraz.insertEndAndCopy(testArr, 1);
+        int[] arr = new int[] {4,3,2,33,7,9,1,1};
+        for (int i=0; i<arr.length; i++){
+            Assert.assertEquals(arr[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2insertEndAndCopy(){
+        int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+        int[] actual = arraz.insertEndAndCopy(testArr,2);
+        Assert.assertEquals(testArr.length+1, actual.length);
+    }
+
+    @Test
+    public void test1SortArrayEvenOdd(){
+        int[] spiffyHandyIntArray = new int[] {4,5,102,6,-7,12,-32,92,8};
+        int[] actual = arraz.sortArrayEvenOdd(spiffyHandyIntArray);
+        int[] expected = new int[]{4,102,6,12,-32,92,8,5,-7};
+        for (int i = 0; i < actual.length; i++) {
+            Assert.assertEquals(expected[i], actual[i]);
+        }
+    }
+
+    @Test
+    public void test2SortArrayEvenOdd(){
+        int[] testArr = new int[] {4,3,10,2,6,7,10,4,10,1};
+        int[] actual = arraz.sortArrayEvenOdd(testArr);
+        int[] expected = new int[]{4,10,2,6,10,4,10,3,7,1};
+        for (int i = 0; i < actual.length; i++) {
+            Assert.assertEquals(expected[i], actual[i]);
+        }
+    }
+
 }