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java int variable

Aneek Banerjee
Ranch Hand

Joined: Jun 20, 2012
Posts: 61

I have a integer variable in main method.
lets say int num=3487;

I want to know how can I print each and every digit of it separately.
Like 1 st digit will be 3 from left then second is 4 from left and so on..

Appreciate your suggestions on this..
William P O'Sullivan
Ranch Hand

Joined: Mar 28, 2012
Posts: 860

Can you show in an example what you mean?

I'm confused with the "2nd from the left" piece.

Also, since int is a primitive, you may want to convert it to a String.

WP
Joanne Neal
Rancher

Joined: Aug 05, 2005
Posts: 3169
    
  10
The easiest way is probably to convert it to a String and then use the getChar method to get each character of the String


Joanne
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 36513
    
  16
Common beginner’s exercise, which you are supposed to do with the % and / operators. It is usually easier to print the last digit first.
Aneek Banerjee
Ranch Hand

Joined: Jun 20, 2012
Posts: 61

@Bear..Sure will keep in mind
Aneek Banerjee
Ranch Hand

Joined: Jun 20, 2012
Posts: 61

Ok so now somehow I have written the code to find the digits separately.Below is the code.

BufferedReader k=new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter a number");
try {
int num=Integer.parseInt(k.readLine());
int n=num;

System.out.println("number you entered is" +n);
String string=Integer.toString(n);
int[] digits=new int[string.length()];
System.out.println(digits);
for(int i=0;i<string.length();i++){
digits[i]= Integer.parseInt(string.substring(i,i+1));

}
System.out.println("thedigits are" +Arrays.toString(digits));

Now my intention is make the programme run like below..

I have an integer number lets say 4567.
The programme output will print 410614(every second digit will be added with it self)
example->
int num=4567.
second digit is four(4) here,so in output it will add 5+5=10
then fourth digit is seven(7) here,so in output it will be 7+7=14.
Finally it will give me the whole output as 410614.

got struck here.
Aneek Banerjee
Ranch Hand

Joined: Jun 20, 2012
Posts: 61


I have an integer number lets say 4567.
The programme output will print 410614(every second digit will be added with it self)
example->
int num=4567.
second digit is five(5) here,so in output it will add 5+5=10
then fourth digit is seven(7) here,so in output it will be 7+7=14.
Finally it will give me the whole output as 410614.

got struck here.
Aneek Banerjee
Ranch Hand

Joined: Jun 20, 2012
Posts: 61

@William...
Is that example is good to go.Or you want more clarification.
William P O'Sullivan
Ranch Hand

Joined: Mar 28, 2012
Posts: 860

Yes, so from your example of 4567 ...

I am using [] to highlight the processing.

[4][5][6][7] = [4][10][6][14] ?

so as you iterate over the source, you need to determine if the current index is divisible by 2, but arrays start at 0, so there's a clue. ;)

WP
Seetharaman Venkatasamy
Ranch Hand

Joined: Jan 28, 2008
Posts: 5575

expansion of Campbell suggestion:
while(true)
int remainder = num % 10
print *remainder*
num = num / 10; // get remaning digits
if num == 0 then break;
dennis deems
Ranch Hand

Joined: Mar 12, 2011
Posts: 808
Seetharaman Venkatasamy wrote:while(true)


um, what??
Seetharaman Venkatasamy
Ranch Hand

Joined: Jan 28, 2008
Posts: 5575

sorry again
 
I agree. Here's the link: http://aspose.com/file-tools
 
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