Insert an Element 4 6 8 100 12 14 16 18 -1 2 4 6. 7 8. 00
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
Related questions
Question
How do you move an element from one spot to the next spot?
![**Q4: Insert an Element**
The diagram consists of a horizontal array with the following elements and indices:
- Elements: [2, 4, 6, 8, 100, 12, 14, 16, 18, -1]
- Indices: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
An arrow labeled 'A' points to the entire array.
**Task:**
If the last element (-1) represents an empty cell, how do you insert the value 50 before the element 100? Write a set of Java code and explain it in English.
**Solution Explanation:**
To insert the number 50 before the element 100, we need to shift all elements from the position of 100 (index 4) to the end of the array one position to the right. Then, we place 50 at index 4.
**Java Code Example:**
```java
public class InsertElement {
public static void main(String[] args) {
int[] array = {2, 4, 6, 8, 100, 12, 14, 16, 18, -1};
int insertPosition = 4; // The position where 50 should be inserted
int newValue = 50;
// Shift elements to the right
for (int i = array.length - 1; i > insertPosition; i--) {
array[i] = array[i - 1];
}
// Insert the new value
array[insertPosition] = newValue;
// Print the updated array
for (int i : array) {
System.out.print(i + " ");
}
}
}
```
**Explanation:**
1. **Define the Array:** Start with the initial array and define where to insert the new value (index 4 in this case).
2. **Shift Elements:** Move each element from index 4 onwards one position to the right to make space for the new element.
3. **Insert New Value:** Place the new value, 50, at index 4.
4. **Output the Array:** Print the updated array to verify the insertion.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdc7af1f5-b041-422e-a7e0-fe3bd054e9c0%2F2fb50464-434b-44c8-b277-5fc1e37a43e4%2Fiwrtu78_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Q4: Insert an Element**
The diagram consists of a horizontal array with the following elements and indices:
- Elements: [2, 4, 6, 8, 100, 12, 14, 16, 18, -1]
- Indices: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
An arrow labeled 'A' points to the entire array.
**Task:**
If the last element (-1) represents an empty cell, how do you insert the value 50 before the element 100? Write a set of Java code and explain it in English.
**Solution Explanation:**
To insert the number 50 before the element 100, we need to shift all elements from the position of 100 (index 4) to the end of the array one position to the right. Then, we place 50 at index 4.
**Java Code Example:**
```java
public class InsertElement {
public static void main(String[] args) {
int[] array = {2, 4, 6, 8, 100, 12, 14, 16, 18, -1};
int insertPosition = 4; // The position where 50 should be inserted
int newValue = 50;
// Shift elements to the right
for (int i = array.length - 1; i > insertPosition; i--) {
array[i] = array[i - 1];
}
// Insert the new value
array[insertPosition] = newValue;
// Print the updated array
for (int i : array) {
System.out.print(i + " ");
}
}
}
```
**Explanation:**
1. **Define the Array:** Start with the initial array and define where to insert the new value (index 4 in this case).
2. **Shift Elements:** Move each element from index 4 onwards one position to the right to make space for the new element.
3. **Insert New Value:** Place the new value, 50, at index 4.
4. **Output the Array:** Print the updated array to verify the insertion.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Approach
First get the element to be inserted, say 50 (for our case)
Then get the position at which this element is to be inserted, say 4 in given example
Convert array to ArrayList
Add 50 at 4 using list.add(4, 50)
Convert ArrayList back to array and print
Step by step
Solved in 3 steps with 1 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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