₦airaland Forum

import java.util.*;
import java.io.*;
public class ReadFile
{
	static List list;

	public static void main(String[] args)
	{
		Scanner read = new Scanner(System.in);
		System.out.println("Enter the number of lines (k) you want to print";
		int k = read.nextInt();

		list = new ArrayList();
		File file = new File(args[0]);

		try
		{
			FileReader fr = new FileReader(file);
			BufferedReader in = new BufferedReader(fr);
			String s;
		
			//read each line from the file
			s = in.readLine();

			while(s!=null)
		 	{
				
				list.add(s);	
				s = in.readLine();
			}
			in.close();

		}
		catch(Exception ex)
		{ 
			ex.printStackTrace();
		}
		printRandom(k);
	}

	public static void printRandom(int k)
	{
		long i = Math.round(Math.random()*list.size());

		if(k<=list.size())
		{
			for(int m =0; m<k; m++)
			{
				System.out.println("Read:" + list.get((int)(i)));
				i = Math.round(Math.random()*list.size());
			}
		}
		else
		{
			System.out.println("No of Lines too much...";
			System.exit(0);
		}
		
	}

}

mkwayisi: Well this is getting interesting. I have my code too in C on a single line. Now don't tell me about readability, you asked for it Perhaps you can write a shorter one with no lines at all

int main(int i,char**v){if(i>1){int c[26];char *p=v[1];for(i=0;i<26c[i++]=0;while(*p!='\0'){if(*p>=97&&*p<=122)*p-=32;if(*p>=65&&*p<=90)c[*p-65]++;p++;}for(i=0;i<26;i++)if(c[i]>0)printf("%cs=%d\n",i+65,c[i]);}return 0;}

After compiling, launch the exe passing the sentence as an argument. A screenshot is shown below.

₱®ÌИСΞ:
. i had implemented this in python before asking and it occupied far less lines...

naija_swag: The number of lines of your code does not determine how efficient it is.I will rather code for shorter running time than for shorter lines of code.

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