/* 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
{
{
}
public static int power(int a, int b){
if (b < 0){
return 0; //error
} else if (b == 0){
return 1;
} else {
return a* power(a, b-1);
}
}
}
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