[Java End-Of-File || StdIn && StdOut] #Java #End-Of-File #EOF #StdIn #StdOut #Hackerrank

EOF.java

import java.io.*;
import java.util.*;

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 scan = new Scanner(System.in);
        int lineNb = 0;
        while(scan.hasNext()){
            lineNb++;
            String inputString = scan.nextLine();
            System.out.println(lineNb+" "+inputString);
        }
    }
}

EOF.md

"In computing, End Of File (commonly abbreviated EOF) is a condition in a computer operating system where no more data can be read from a data source." — (Wikipedia: End-of-file)

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.