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 Uwm0/SIT4BcuNeyCu5LnF/sJC3bDfFHqTe03m9XjFjpS76ciGD3tl1Pz/RKnTr17