Question

Write a program called Three in Java that reads a text file, in.txt, that contains a list of positive integers (duplicates are possible, zero is not considered a positive integer) separated by spaces and/or line breaks.

After reading the integers, the program must recursively figure out if the list of integers includes three consecutive integers in an increasing order. The program prints out Yes if this is the case (the list contains three consecutive integers in increasing order. Otherwise, the program prints out No. The three consecutive integers do not need to be next to one another. Assume that in.txt is not empty and it contains at least three integers. It is important that your program be named Three and that the input file is named in.txt.

Answer 1

The task is to develop a Java program named Three which reads integers from a file named in.txt, and recursively checks for the presence of three consecutive integers in increasing order, outputting 'Yes' or 'No' as a result.

Step-by-step explanation:

The student's question requires creating a Java program named Three that analyzes a list of positive integers read from a file called in.txt to determine if it contains three consecutive integers in increasing order. To achieve this, the program utilizes a recursive method to iterate through the list of integers and check for consecutive sequences. Additionally, the program outputs 'Yes' if it finds such a sequence, and 'No' otherwise. While this task does include some mathematical logic, it falls under the domain of computer programming, which is a part of the Computers and Technology subject area.

Here is a simplified code structure to address the problem:

public class Three {
public static boolean hasConsecutiveIntegers(int[] array, int start) {
// Recursive logic to find three consecutive integers.
// Implement necessary logic here.
}
public static void main(String[] args) {
// Read the file 'in.txt' and populate an integer array.
// Call hasConsecutiveIntegers and output the result.
}
}

This program will require parsing the input file to create an array of integers and defining the recursive method to process this array. The precise implementation details are left to the programmer, but the task is a blend of file I/O operations, data manipulation, and recursive algorithm design.