Tuesday, April 12, 2022

Java End Of File

 Hackerrank Java End Of File Problem By Java Tech Solutionz





The challenge here is to read  lines of input until you reach EOF, then number and print all  lines of content.

Hint: Java's Scanner.hasNext() method is helpful for this problem.

Input Format

Read some unknown  lines of input from stdin(System.in) until you reach EOF; each line of input contains a non-empty String.

Output Format

For each line, print the line number, followed by a single space, and then the line content received as input.

Sample Input

Hello world
I am a file
Read me until end-of-file.

Sample Output

1 Hello world
2 I am a file
3 Read me until end-of-file.

Solution:

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner scanner = new Scanner(System.in);
        int i=0;
        while(scanner.hasNextLine()){
            System.out.println(++i + " "+scanner.nextLine());
        }
    }
}

No comments:

Post a Comment

Concurrent Hashmap in java

  A ConcurrentHashMap is a thread-safe implementation of the Map interface in Java. Unlike a HashMap , which is not thread-safe and can ca...