假设:爸爸=F儿子=S妈妈=M女儿=D警察=P罪犯=C~~~~~~~~~~表示河,现在的状况是:F S S M D D P C~~~~~~~~~~解法如下:1.P和C先过河,P再回来。F S S M D D P~~~~~~~~~~C2.P和D过河,PC回来。F S S M D P C~~~~~~~~~~D3.M和D过河,M回来。F S S M P C~~~~~~~~~~D D4.M和F过河,F回来。F S S P C
~~~~~~~~~~M D D5.P和C过河,M回来。F S S M
~~~~~~~~~~P C D D6.F和M过河,F回来F S S
~~~~~~~~~~P C M D D7.F和S过河,P和C回来。S P C
~~~~~~~~~~F S M D D8.P和S过河,P回来。C P
~~~~~~~~~~F S S M D D9.P和C过河,成功!!
~~~~~~~~~~F S S M D D P C参考资料:自己思考