Cho’lliyev Shohruh Ibadullayevich java dasturlash tilida satr va fayl oqimlari bilan ishlash bo’yicha uslubiy qo’llanma

import javax.swing.*;

import java.util.*;

import java.io.*;

public class my6 {

public static void main(String[] args) throws IOException{

Scanner sc=new Scanner(new File("a.txt"));

PrintWriter pw=new PrintWriter(new File("b.txt"));

String s=sc.nextLine();

int k=0; int j,i;int m=0;

for (i=1;i<=s.length();i++)

k++;

pw.println("satr uzunligi k="+k);

sc.close();pw.close();

}

}

Natija :a.txt  salom

b.txt  5
Biz fayllar bilan ishlaganda faqat satr yoki matn bilan ishlashimiz shart emas

xoxlagan turdagi dasturni tuza olamiz,bu dastur n-chi tub sonni topib beradi.

import javax.swing.*;

import java.io.*;

import java.util.*;

public class my7 {

public static void main(String[] args) throws IOException{

Scanner sc=new Scanner(new File("a.txt"));

PrintWriter pw=new PrintWriter(new File("b.txt"));

int n=sc.nextInt();

int j,k,t,m=0;

int i;
for (i=2;true;i++){ k=0;

for (j=2;j<=Math.sqrt(i);j++)