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Welcome to All Test Answers

Java program that reads each word from the file and outputs the number of palindromes in the file

Create a file WordBuff.txt that contains the following list of words: MADAM,
DAD, RISK, JAVA, MALAYALAM, RACECAR, RADAR, ROTOR, REFER,
SEDES, SOLOS, COURSE, STATS, TOROT, TENET, MACHINE, VIRTUAL,
STUDENT, PULLUP, PROGRAMME, and CORE. Write a java program that reads
each word from the file and outputs the number of palindromes in the file.

Answer:



import java.io.FileInputStream;
import java.util.Scanner;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class Question8
{
	public static void main(String[] args)
	{
        String word;
        Scanner inputStream;
        char lastChar;
        int maxConsecutive = 0;
        String maxWord = "";

      	try
      	{
			inputStream = new Scanner(new FileInputStream("words.txt"));

			while (inputStream.hasNextLine())
			{
			  word = inputStream.nextLine();
			  int numConsecutive = 0;
			  lastChar = word.charAt(0);
			  int i = 1;
			  while (i < word.length() -1) { if (word.charAt(i)==lastChar) { numConsecutive++; // check if at end of string; if so, no more pairs if (i >= word.length() -2)
							break;
					   // Move forward 2 chars looking for next pair
					   lastChar = word.charAt(i+1);
					   i+=2;
					}
					else
					{
					   lastChar = word.charAt(i);
					   i++;
					}
			  }
			  if (numConsecutive > 0)
			  {
					if (numConsecutive > maxConsecutive)
					{
							maxWord = word;
							maxConsecutive = numConsecutive;
					}
		 	     }
			}
			inputStream.close();
			System.out.println(maxWord +
			   " is the word with the most consecutive letters at " +
			   maxConsecutive);
		   }
	    catch (IOException e)
      	   {
	 	 System.out.println("Error reading files.");
      	   }
	}
}

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