while loop

#beginners #java #fullstack #payilagam

Print number like this order:

*1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25 *

package Afterfeb4;

public class while1 {
    public static void main(String[] args) {

        int no = 1;
        int upperLimit = 5;
        while (no <= 25) {
            while (no <= upperLimit) {
                System.out.print(no + " ");
                no = no + 1;
            }
            System.out.println();
            upperLimit = upperLimit + 5;
        }

    }
}

package Afterfeb4;

public class while2 {
    public static void main(String[] args) {
        int  no =1;
        while(no<=25)
        {
        System.out.print(no+" ");   
        if(no%5==0)
        {
        System.out.println();   
        }
        no++;
        }
    }

}

count of digits for a given number:

package Afterfeb4;

public class while3 {
    public static void main(String[] args) {
        int no = 19675;
        int i = 0;
        while (no > 0) {
            System.out.println(no % 10);//Reminder
            no = no / 10;//upper value

            i++;
        }
        System.out.println("total count = " + i);

    }

}

Output:
5
7
6
9
1
total count = 5

*Changing order of no:
1 2 3 4 5
5 4 3 2 1
1 2 3 4 5
5 4 3 2 1
1 2 3 4 5
*

package Afterfeb4;

public class Numberparttern1 {
    static int j;

    public static void main(String[] args) {
        int count = 1;
        while (count <= 5) {

            if (count % 2 != 0) // check count no is odd number ;example count=1,3,5
            {
                int j = 1;
                while (j <= 5) {
                    System.out.print(j + " ");
                    j++;
                }
            } else // (count%2==0)check count no even number ;example count=2,4
            {
                j = 5;
                while (j >= 1) {

                    System.out.print(j + " ");
                    j--;
                }
            }

Output:
1 2 3 4 5
5 4 3 2 1
1 2 3 4 5
5 4 3 2 1
1 2 3 4 5

package Afterfeb4;

public class Numberpattern2 {
    static int j = 1;

    public static void main(String[] args) {
        int count = 1;

        while (count <= 5) {
            if (count == 1)

                while (j <= 5) {
                    {
                        System.out.print(j);
                        j++;
                        if (j % 6 == 00)
                            System.out.println();
                    }
                }
            else if (count == 2) {
                j = 10;
                while (j >= 6) {
                    System.out.print(j);
                    j--;

                }
                System.out.println();
            } else if (count == 3) {
                j = 11;
                while (j <= 15) {
                    System.out.print(j);
                    j++;

                }
                System.out.println();
            } else if (count == 4) {
                j = 20;
                while (j >= 16) {
                    System.out.print(j);
                    j--;

                }
                System.out.println();
            } else if (count == 5) {
                j = 21;
                while (j <= 25) {
                    System.out.print(j);
                    j++;

                }
            }

            count++;
        }
    }

}

Output:

12345
109876
1112131415
2019181716
2122232425