图1-16是用火柴摆成的猪,想想看,如何移动2根火柴,使它变成四腿张开的猪?
图1-16 vXb0mFyo4IUDw8wPHYQrlPkUP3toZhdXmwhiejVWh1xg1TzjyQ0CEmy4alTJlsoN