BlueJ Program On Arranging Digits Of Number

Program to enter a number upto 8 digits and form a new number where odd digits get sorted in ascending order followed by even digits in descending order.

 import java.io.*;

class smith1

{

 int n,even[],odd[],i,evenindex=0,oddindex=0;

 String str;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

public void takeNumber() throws Exception

{

even=new int[8];

odd=new int[8];

do

{

 System.out.println("Enter the number:");

 str=br.readLine().trim();

 if(str.length()< =8)

 break;

 }while(true);

n=Integer.parseInt(str);

do

{

i=n%10;

if(i%2==0)

even[evenindex++]=i;

else

odd[oddindex++]=i;

n=n/10;

}while(n!=0);

sortOdd();

sortEven();

n=0;

for(i=0;i< oddindex;i++)

n=n*10+odd[i];

for(i=0;i< evenindex;i++)

n=n*10+even[i];

System.out.println("Modified Number="+n);

}

private void sortEven()

{

 int j,flag=0,t;

for(i=0;i< evenindex;i++)

{

flag=0;

for(j=0;j< evenindex-i-1;j++)

{

 if(even[j]< even[j+1])

 {

  t=even[j];

  even[j]=even[j+1];

  even[j+1]=t;

  flag=1;

  }

 }

 if(flag==0)

 break;

 }

 }

private void sortOdd()

{

 int j,flag=0,t;

for(i=0;i< oddindex;i++)

{

flag=0;

for(j=0;j< oddindex-i-1;j++)

{

 if(odd[j] >odd[j+1])

 {

  t=odd[j];

  odd[j]=odd[j+1];

 odd[j+1]=t;

  flag=1;

  }

 }

 if(flag==0)

 break;

 }

 }

 public static void main(String args[])throws Exception

 {

  smith1 obj=new smith1();

  obj.takeNumber();

  }

  }

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