lab2all

package TEST;

public class lab2 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int n= (int)(5+Math.random()*(20-5+1));
        System.out.printf("random number %d \n",n);
       for(int i= 0 ; i<=n;i++) {
        System.out.printf(" %d",i);

       }

}}


package TEST;

import java.util.Scanner;

public class lab2_task2 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sc= new Scanner(System.in);
        int  num ;
        num=sc.nextInt();
        for(int r=0;r<num;r++) {
            for(int c=1; c<=num-r;c++ ) {
                 System.out.printf(" %d",c );

            }

//      //System.out.println("number"+i );
            System.out.printf("\n");
        }
        }


    }


package TEST;

public class lab2_task3 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        for(int r=150; r>=100;r--) {
            if(r%8==0) { System.out.printf(" %d",r );
        }
    }

    }

}

package TEST;

public class lab2_task4 {

    public static void main(String[] args) {
        int n= (int)(1990+Math.random()*(2020-1990+1));
        //int n=2016;
        System.out.println("random year ="+n);
        if(n%4==0) {
            if(n%4==0 && n%100!=0) {

                System.out.printf("%d : true ",n);
            }else{System.out.printf("%d : false ",n);}

        }else System.out.printf("%d : false ",n);
    }

}