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 c6ZlPGdinNAI3b+cIM3lovOz9r+AIjWbLP0b1Yk9J+tZ2CIJJweSfXJn2a3rup6m