第一题

T1 2019/8/20

01 #T1 用1，2，3，4创建一个各个位置之间互不相同的的四位数，并打印出来
02 num=range(1,5);
03 cal=0;
04 for one in num:
05         for two in num:
06                 for three in num:
07                         for four in num:
08                                 new_num = [one,two,three,four];
09                                 if len(num) == len(set(new_num)):
10                                         value=one*1000+two*100+three*10+four;
11                                         cal += 1;
12                                         print(value);
13 print('there are '+str(cal)+' ways of ranking');