数字排列问题!1234567890组成四位数字0可以在首位排列出所有组合能列出...答:0285,0286,0287,0289,0291,0293,0294,0295,0296,0297,0298,0312,0314,0315,0316,0317,0318,0319,0321,0324,0325,0326,0327,0328,0329,0341,0342,0345,0346,0347,0348,0349,0351,0352,0354,0356,0357,0358,0359,0361,0362,0364,0365,0367,0368,0369,0371,0372,0374,0375,0376,0378,0379,0381,0382,0384,...