<doocs>1012.Numbers With Repeated Digits_1.py
def A(m, n):
    return 1 if n == 0 else A(m, n - 1) * (m - n + 1)
def sample_funcname ( var_1 , var_2 ) :
    return 1 if var_2 == 0 else var_0 ( var_1 , var_2 - 1 ) * ( var_1 - var_2 + 1 )
