Write a Java program called E2b that will read from Stdln an integer, n, and will set the size of a 2D array to have n rows and n columns. The values in this n x n 2D array must be read from Stdln and the array must be filled in row-major order. For example, if the following input stream was read: 4 12 34 4321 9876 5764 The 2D array created would be: 1 2 4 4 1 8 7 6 5 7 4 Include in the program above, code that would print the values in the 2D array beginning with the value in the last row, last column and ending with the value in the Oth row, Oth column, traversing the columns from bottom to top, printing n values in each row of the output. The values in the array do not change. You are simply printing them in a unique order. For example, for the array given above, the output would be: 4 7 3 7 8. 2 4 1 3. 3. 00 4+

Write a Java program called E2b that will read from Stdln an integer, n, and will set the size of a 2D array to have n rows and n columns. The values in this n x n 2D array must be read from Stdln and the array must be filled in row-major order. For example, if the following input stream was read: 4 12 34 4321 9876 5764 The 2D array created would be: 1 2 4 4 1 8 7 6 5 7 4 Include in the program above, code that would print the values in the 2D array beginning with the value in the last row, last column and ending with the value in the Oth row, Oth column, traversing the columns from bottom to top, printing n values in each row of the output. The values in the array do not change. You are simply printing them in a unique order. For example, for the array given above, the output would be: 4 7 3 7 8. 2 4 1 3. 3. 00 4+

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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Question

## Java Program for Reading and Manipulating a 2D Array

This section describes how to write a Java program called `E2b` that reads an integer, `n`, from standard input (StdIn) and sets the size of a 2D array to have `n` rows and `n` columns. The values in this `n x n` 2D array are read from StdIn and must be filled in a row-major order.

### Example:

If the following input stream was read: `4 1 2 3 4 4 3 2 1 9 8 7 6 5 7 6 4`

The 2D array created would be:

```
1 2 3 4
4 3 2 1
9 8 7 6
5 7 6 4
```

### Additional Requirements:

Include code that prints the values in the 2D array beginning with the value in the last row, last column and ending with the value in the 0th row, 0th column. The program should traverse the columns from bottom to top, printing `n` values in each row of the output. The values in the array should not change; they are simply printed in a unique order.

### Example Output:

For the array given above, the output would be:

```
4 6 1 4
6 7 2 3
7 8 3 2
5 9 4 1
```

### Java Program Skeleton:

```java
public class E2b {
// Your code implementation here
}
```

This program demonstrates how to manipulate the order of array elements for display purposes without altering the actual data stored in the array.

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