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Recursion in java

Software Development


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  #1  
Old 19-11-2009
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Join Date: Jul 2009
Posts: 127
Recursion in java
  

Hi
I am trying to write an static recursive method that returns the occurrence a particular digit d in an integer n. For example, if passed (1342457,4) it should return 2, whereas when passed (1342457,6) it should return 0. This is not my actual code and it will not sound like that, I just want help with the logic in this. I can't grasp what needs to be done. i should also take care of that no variables are other than the two that the user will input as the integer, and the digit to be checked for.

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  #2  
Old 19-11-2009
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Join Date: May 2008
Posts: 2,286
Re: Recursion in java

Hi
I think you need to use at least one more variable. I think you should read the integer in as a string. Create an array of all it's char's and then compare each one to the digit. Hope this will solve your problem. If not do post back again.
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  #3  
Old 19-11-2009
Member
 
Join Date: Jul 2009
Posts: 127
Re: Recursion in java

Hi
Thanks for replying. I will take care of what you have said. I am posting my code below see if you can help me.
Code:
// Returns the largest element in an integer array
public static int maxa(int[] a, int size)
{
if (size==1)
return (a[0]);
else
{
int temp = maxa(a, size-1);
if(temp>a[size-1])
return temp;
else
return a[size-1];
}
}
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