1 #事先声明，这里的 + - * / 按照的是 出现顺序直接计算，并没有考虑优先级 2 def operator(a, op, b): 3 if op == '+': 4 return a+b 5 elif op == '-': 6 return a-b 7 elif op == '*': 8 return a*b 9 else: 10 return a/b 11 12 list_operator = ['+', '-', '*', '/'] 13 card1, card2, card3, card4 = map(int, input('请输入四个扑克牌的大小: ').split(' ')) 14 list_card = [card1, card2, card3, card4] 15 list_total = []#所有已经满足24点的式子 16 list_check = []#需要检查是否存在的式子 17 flag = 0#用来表示是否出现重复式子 18 19 for i in range(len(list_card)): 20 for j in range(len(list_card)): 21 if i != j: 22 for t1 in range(len(list_operator)): 23 sum1 = operator(list_card[i], list_operator[t1], list_card[j]) 24 for k in range(len(list_card)): 25 if k != j and k != i: 26 for t2 in range(len(list_operator)): 27 sum2 = operator(sum1, list_operator[t2], list_card[k]) 28 for g in range(len(list_card)): 29 if g != k and g != i and g != j: 30 for t3 in range(len(list_operator)): 31 flag = 0#只在最后一个地方 清零即可，因为这里是必须经过的 32 list_check = []#把check列表也清空 33 sum3 = operator(sum2, list_operator[t3], list_card[g]) 34 if sum3 == 24: 35 list_check.append(list_card[i]) 36 list_check.append(list_operator[t1]) 37 list_check.append(list_card[j]) 38 list_check.append(list_operator[t2]) 39 list_check.append(list_card[k]) 40 list_check.append(list_operator[t3]) 41 list_check.append(list_card[g]) 42 #用来检查是否有重复的式子 43 for v in range(len(list_total)): 44 if list_check == list_total[v]: 45 flag = 1 46 break 47 if flag == 1:#如果存在，那么就直接跳过这次输出 48 break 49 print(list_card[i], list_operator[t1], list_card[j], list_operator[t2], 50 list_card[k], list_operator[t3], list_card[g]) 51 list_total.append(list_check)#在total列表的最后加上新式子 52 53 54 55