/** This method swaps the first and second half of the given array. @param values an array */ public void swapFirstAndSecondHalf (int[] values) { int[] first = new int [values.length/2]; int[] second = new int [values.length/2]; for (int i = 0; i < values. length / 2; i++) { second[i] = values[i]; } for (int j = values.length/2; j < values.length; j++) { first[j] = values[j]; } for (int k = 0; k< values.length/2; k++) { values[k] = first [k]; } for (int 1= values.length/2; 1 < values.length; 1++) { values [1] second [1]; }
/** This method swaps the first and second half of the given array. @param values an array */ public void swapFirstAndSecondHalf (int[] values) { int[] first = new int [values.length/2]; int[] second = new int [values.length/2]; for (int i = 0; i < values. length / 2; i++) { second[i] = values[i]; } for (int j = values.length/2; j < values.length; j++) { first[j] = values[j]; } for (int k = 0; k< values.length/2; k++) { values[k] = first [k]; } for (int 1= values.length/2; 1 < values.length; 1++) { values [1] second [1]; }
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![**Table Overview: Java Array Index Out of Bounds Exception**
This table presents a series of test cases for a Java function `swapFirstAndSecondHalf`, which is intended to swap the first and second halves of an array. The table outlines the expected outcomes and the actual results when the function is executed. It demonstrates occurrences of an `ArrayIndexOutOfBoundsException`.
### Table Structure
1. **Name**: Indicates the result of the test case, either "fail" or "pass".
2. **Arguments**: Displays the input array passed into the function.
3. **Actual**: Contains the output or error message generated by the function.
4. **Expected**: Shows the anticipated result when the function works correctly.
### Test Cases
- **First Test Case**
- **Name**: fail
- **Arguments**: `check new int[] {1, 2, 3, 4}`
- **Actual**:
```
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
at Swapper.swapFirstAndSecondHalf(Swapper.java:15)
at Swapper.check(Swapper.java:35)
at SwapperCodeCheck.main(SwapperCodeCheck.java:38)
```
- **Expected**: `[3, 4, 1, 2]`
- **Second Test Case**
- **Name**: fail
- **Arguments**: `check new int[] {1, 2, 3, 4, 5}`
- **Actual**:
```
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
at Swapper.swapFirstAndSecondHalf(Swapper.java:15)
at Swapper.check(Swapper.java:35)
at SwapperCodeCheck.main(SwapperCodeCheck.java:48)
```
- **Expected**: `[4, 5, 3, 1, 2]`
- **Third Test Case**
- **Name**: pass
- **Arguments**: `check new int[] { }`
- **Actual**: `[]`
- **Expected**: `[]`
### Discussion
The first two test cases failed because the function attempted to access an index outside the bounds of](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1580620b-ec3d-48da-8d5f-e0e1d6dd1757%2Fb2311ea4-eac5-4925-b6df-a420394c68e3%2F4n0ptcn_processed.png&w=3840&q=75)
Transcribed Image Text:**Table Overview: Java Array Index Out of Bounds Exception**
This table presents a series of test cases for a Java function `swapFirstAndSecondHalf`, which is intended to swap the first and second halves of an array. The table outlines the expected outcomes and the actual results when the function is executed. It demonstrates occurrences of an `ArrayIndexOutOfBoundsException`.
### Table Structure
1. **Name**: Indicates the result of the test case, either "fail" or "pass".
2. **Arguments**: Displays the input array passed into the function.
3. **Actual**: Contains the output or error message generated by the function.
4. **Expected**: Shows the anticipated result when the function works correctly.
### Test Cases
- **First Test Case**
- **Name**: fail
- **Arguments**: `check new int[] {1, 2, 3, 4}`
- **Actual**:
```
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
at Swapper.swapFirstAndSecondHalf(Swapper.java:15)
at Swapper.check(Swapper.java:35)
at SwapperCodeCheck.main(SwapperCodeCheck.java:38)
```
- **Expected**: `[3, 4, 1, 2]`
- **Second Test Case**
- **Name**: fail
- **Arguments**: `check new int[] {1, 2, 3, 4, 5}`
- **Actual**:
```
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2
at Swapper.swapFirstAndSecondHalf(Swapper.java:15)
at Swapper.check(Swapper.java:35)
at SwapperCodeCheck.main(SwapperCodeCheck.java:48)
```
- **Expected**: `[4, 5, 3, 1, 2]`
- **Third Test Case**
- **Name**: pass
- **Arguments**: `check new int[] { }`
- **Actual**: `[]`
- **Expected**: `[]`
### Discussion
The first two test cases failed because the function attempted to access an index outside the bounds of
![```java
/**
* This method swaps the first and second half of the given array.
* @param values an array
*/
public void swapFirstAndSecondHalf(int[] values) {
int[] first = new int[values.length / 2];
int[] second = new int[values.length / 2];
for (int i = 0; i < values.length / 2; i++) {
second[i] = values[i];
}
for (int j = values.length / 2; j < values.length; j++) {
first[j] = values[j];
}
for (int k = 0; k < values.length / 2; k++) {
values[k] = first[k];
}
for (int l = values.length / 2; l < values.length; l++) {
values[l] = second[l];
}
}
// This method is used to check your work
public int[] check(int[] values) {
swapFirstAndSecondHalf(values);
return values;
}
```
### Detailed Explanation:
- The code defines a class with two methods.
- **`swapFirstAndSecondHalf` Method:**
- Purpose: Swaps the first and second half of an integer array.
- Parameters: Takes an integer array called `values`.
- Steps:
1. Create two new arrays, `first` and `second`, each half the length of `values`.
2. Copy the first half of `values` into the `second` array.
3. Copy the second half of `values` into the `first` array.
4. Swap the halves by reassigning `values` with elements from `first` and `second`.
- **`check` Method:**
- Purpose: Validates the swapping by calling `swapFirstAndSecondHalf` on `values` and returning the modified array.
- Parameters: Takes an integer array called `values`.
- Returns: The array after the swap operation.
This code demonstrates array manipulation techniques in Java, specifically focusing on dividing an array into two parts and swapping them.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1580620b-ec3d-48da-8d5f-e0e1d6dd1757%2Fb2311ea4-eac5-4925-b6df-a420394c68e3%2Fg8og13g_processed.png&w=3840&q=75)
Transcribed Image Text:```java
/**
* This method swaps the first and second half of the given array.
* @param values an array
*/
public void swapFirstAndSecondHalf(int[] values) {
int[] first = new int[values.length / 2];
int[] second = new int[values.length / 2];
for (int i = 0; i < values.length / 2; i++) {
second[i] = values[i];
}
for (int j = values.length / 2; j < values.length; j++) {
first[j] = values[j];
}
for (int k = 0; k < values.length / 2; k++) {
values[k] = first[k];
}
for (int l = values.length / 2; l < values.length; l++) {
values[l] = second[l];
}
}
// This method is used to check your work
public int[] check(int[] values) {
swapFirstAndSecondHalf(values);
return values;
}
```
### Detailed Explanation:
- The code defines a class with two methods.
- **`swapFirstAndSecondHalf` Method:**
- Purpose: Swaps the first and second half of an integer array.
- Parameters: Takes an integer array called `values`.
- Steps:
1. Create two new arrays, `first` and `second`, each half the length of `values`.
2. Copy the first half of `values` into the `second` array.
3. Copy the second half of `values` into the `first` array.
4. Swap the halves by reassigning `values` with elements from `first` and `second`.
- **`check` Method:**
- Purpose: Validates the swapping by calling `swapFirstAndSecondHalf` on `values` and returning the modified array.
- Parameters: Takes an integer array called `values`.
- Returns: The array after the swap operation.
This code demonstrates array manipulation techniques in Java, specifically focusing on dividing an array into two parts and swapping them.
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