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 NNCQkSJ0OPjDFMuoJvMRqUASE80xX07teepQ8OH5vFUlfC/bIn2qVpPiRPx2kmPt