Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Compute the distance between the positions of the first and last zero element in the given array. For example if the array is 3 0 1 0 4 9 5 0 6 your algorithm should yield 7 - 1 = 6. If the array contains a single zero return 0. If it doesn’t contain any zeros return a negative value Only edit code within the /*Your code goes here*/ portion.
### Java Code Snippet for Educational Purposes

#### Overview

This image displays a Java integrated development environment (IDE) with a code snippet from a file named `Numbers.java`. The code defines a public class `Numbers` with a static method `zeroesDistance`.

#### Code Explanation

```java
public class Numbers {
    
    public static int zeroesDistance(double[] values) {
        
        int firstPos = 0;
        int lastPos = values.length - 1;
        boolean found = false;

        while (firstPos < values.length && !found) {
            /* Your code goes here */
        }

        return lastPos - firstPos;
    }
}
```

- **Class Declaration**: `Numbers` – This is the name of the class.
  
- **Method Declaration**: `zeroesDistance` – A static method that accepts an array of doubles and returns an integer.
  
- **Variables**:
  - `firstPos`: Initialized to 0, likely used to track the initial position.
  - `lastPos`: Initialized to the last index of the `values` array.
  - `found`: A boolean set to `false`, potentially for controlling the loop.

- **While Loop**: Contains a placeholder for the code, indicated by the comment `/* Your code goes here */`. This loop appears to iterate through the `values` array until a condition is met.

- **Return Statement**: Returns the difference between `lastPos` and `firstPos`.

#### Projects and Files

The left pane shows a file explorer with several Java files listed, indicating additional projects that might relate to different coding exercises or demonstrations.

#### Console Output

At the bottom, there's a console output showing interaction with a program, likely related to the code:

- Input Series: "Enter scores, -1 to quit"
- Output Series: The scores entered are displayed, indicating a user input and echoing sequence.
  
- **Process Completion**: The process finished successfully with exit code 0.

This educational snippet can be used to explain basic Java methods, loops, and handling arrays within a Java class.
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Transcribed Image Text:### Java Code Snippet for Educational Purposes #### Overview This image displays a Java integrated development environment (IDE) with a code snippet from a file named `Numbers.java`. The code defines a public class `Numbers` with a static method `zeroesDistance`. #### Code Explanation ```java public class Numbers { public static int zeroesDistance(double[] values) { int firstPos = 0; int lastPos = values.length - 1; boolean found = false; while (firstPos < values.length && !found) { /* Your code goes here */ } return lastPos - firstPos; } } ``` - **Class Declaration**: `Numbers` – This is the name of the class. - **Method Declaration**: `zeroesDistance` – A static method that accepts an array of doubles and returns an integer. - **Variables**: - `firstPos`: Initialized to 0, likely used to track the initial position. - `lastPos`: Initialized to the last index of the `values` array. - `found`: A boolean set to `false`, potentially for controlling the loop. - **While Loop**: Contains a placeholder for the code, indicated by the comment `/* Your code goes here */`. This loop appears to iterate through the `values` array until a condition is met. - **Return Statement**: Returns the difference between `lastPos` and `firstPos`. #### Projects and Files The left pane shows a file explorer with several Java files listed, indicating additional projects that might relate to different coding exercises or demonstrations. #### Console Output At the bottom, there's a console output showing interaction with a program, likely related to the code: - Input Series: "Enter scores, -1 to quit" - Output Series: The scores entered are displayed, indicating a user input and echoing sequence. - **Process Completion**: The process finished successfully with exit code 0. This educational snippet can be used to explain basic Java methods, loops, and handling arrays within a Java class.
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