/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
Ideone i = new Ideone();
System.
out.
println(i.
fact(5)); }
public int fact(int num){
if(num == 0 ) return 1;
if(num == 1) return 1;
return num * fact(num-1);
}
}
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