the recursive function gives a stack overflow error. I want to calculate the GDC ie the greatest Integer function for two input numbers. the code of my program is as follows and the error comes in the function gcd_func in the last condition giving stack overflow null. .I do not wish to use the scanner class Is there anything i can do to improve thiscode?
import java.io.*;
public class reursion
{
public void main()throws IOException
{BufferedReader stdin= new BufferedReader (new InputStreamReader( System.in));
System.out.println("Input two nos");
int a =Integer.parseInt(stdin.readLine());
int b =Integer.parseInt(stdin.readLine());
int gcd=1;
int i=2;
int p= gcd_func(a,b,gcd,i);
System.out.println( "GCD+ +"+p);
}
int gcd_func(int a, int b, int gcd, int i)
{ if((a==1)||(b==1))
{ return(gcd);
}
else
if((a%i==0)&&(b%i==0))
{ gcd=gcd*i;
a=a/i;
b=b/i;
i++;
return( gcd_func(a,b,gcd,i));
}
else
{ i++;
return( gcd_func(a, b, gcd, i));
}
}
}
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