Consider the following method: public static void arrayMystery(int[) a) { for (int i = 1; i < a.length; i++) { a[i] = i + a[i - 1] - a[i]; } } Given the following array int[] a1 = {4,3,6}; What values would be stored in the array a1 after the method arrayMystery() executes and array a1 is passed as a parameter to it.
Consider the following method: public static void arrayMystery(int[) a) { for (int i = 1; i < a.length; i++) { a[i] = i + a[i - 1] - a[i]; } } Given the following array int[] a1 = {4,3,6}; What values would be stored in the array a1 after the method arrayMystery() executes and array a1 is passed as a parameter to it.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![## Method Description
Consider the following method:
```java
public static void arrayMystery(int[] a) {
for (int i = 1; i < a.length; i++) {
a[i] = i + a[i - 1] - a[i];
}
}
```
## Problem Statement
Given the following array:
```java
int[] a1 = {4, 3, 6};
```
What values would be stored in the array `a1` after the method `arrayMystery()` executes and array `a1` is passed as a parameter to it?
## Explanation
The `arrayMystery()` method iteratively updates each element in the array starting from the index 1. The update rule is given by:
\[ a[i] = i + a[i - 1] - a[i] \]
### Processing Steps
1. **Initial Array**: `a1 = {4, 3, 6}`
2. **Iteration 1**: `i = 1`
- Calculate: `a[1] = 1 + a[0] - a[1] = 1 + 4 - 3 = 2`
- Updated Array: `a1 = {4, 2, 6}`
3. **Iteration 2**: `i = 2`
- Calculate: `a[2] = 2 + a[1] - a[2] = 2 + 2 - 6 = -2`
- Updated Array: `a1 = {4, 2, -2}`
### Final Array
After the execution of the method, the array will be `{4, 2, -2}`.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4d0264f0-d788-49e1-8f3e-4880621c4f88%2F040b0952-3202-4101-bbb1-1b84d54f95c7%2F0oetlh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:## Method Description
Consider the following method:
```java
public static void arrayMystery(int[] a) {
for (int i = 1; i < a.length; i++) {
a[i] = i + a[i - 1] - a[i];
}
}
```
## Problem Statement
Given the following array:
```java
int[] a1 = {4, 3, 6};
```
What values would be stored in the array `a1` after the method `arrayMystery()` executes and array `a1` is passed as a parameter to it?
## Explanation
The `arrayMystery()` method iteratively updates each element in the array starting from the index 1. The update rule is given by:
\[ a[i] = i + a[i - 1] - a[i] \]
### Processing Steps
1. **Initial Array**: `a1 = {4, 3, 6}`
2. **Iteration 1**: `i = 1`
- Calculate: `a[1] = 1 + a[0] - a[1] = 1 + 4 - 3 = 2`
- Updated Array: `a1 = {4, 2, 6}`
3. **Iteration 2**: `i = 2`
- Calculate: `a[2] = 2 + a[1] - a[2] = 2 + 2 - 6 = -2`
- Updated Array: `a1 = {4, 2, -2}`
### Final Array
After the execution of the method, the array will be `{4, 2, -2}`.
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