private int METHOD_1 ( int n ) { if ( n == 1 ) { return n ; } return n * ( METHOD_1 ( ( n - 1 ) ) ) ; } 

private int METHOD_1 ( int n ) { if ( ( n == 0 ) || ( n == 1 ) ) { return 1 ; } return n * ( METHOD_1 ( ( n - 1 ) ) ) ; } 
