Methods: How to Write Them Practice Test

public static int factorial(int n){ if(n==0) return 0; return n*factorial(n-1); }

public static int factorial(int n){ if(n<=1) return 1; return n*factorial(n-1); }

public static int factorial(int n){ if(n<=1) return 1; return factorial(n); }

public static int factorial(int n){ if(n<=1) return 1; return n+factorial(n-1); }