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コンピュータ演習A 21 Day 5th(5/9): c5(hit and blow text), blow判定のバグ修正付き

Last updated at 2023-05-29Posted at 2021-05-24

授業動画

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項目

random
int
list
hit
blow

最初

./python_codes/c5_hit_and_blow/c5_hit_and_blow_init.py

 1  import random
 2  
 3  a = random.randint(0,9)
 4  print(a)
 5  
 6  b = int(input("数をいれてね>"))
 7  print(b)
 8  
 9  if a==b:
10      print("hit")
11  else:
12      print("miss")

最終

./python_codes/c5_hit_and_blow/c5_hit_and_blow.py

 1  import random
 2  random.seed(0)
 3  a = [random.randint(0, 9),
 4   random.randint(0, 9),
 5   random.randint(0, 9),
 6   random.randint(0, 9)]
 7  a = [0,1,6,0]
 8  print(a)
 9  print(str(a[0])+str(a[1])+str(a[2])+str(a[3]))
10  
11  while True:
12      isok = False
13      while isok == False:
14          b = input("数を入れてね>")
15          if len(b) !=4:
16              print("4桁の数字をいれてね")
17          else:
18              kazuok = True
19              for i in range(4):
20                  if ((b[i]<"0") or (b[i]>"9")):
21                      print("b["+str(i)+"]は数字ではありません．")
22                      kazuok = False
23                      break
24                  else:
25                      isok = True
26                      
27      hit = 0
28      for i in range(4):
29          if a[i] == int(b[i]):
30              hit = hit + 1
31      print("hit:"+str(hit))
32              
33      blow = 0
34      for j in range(4):
35          for i in range(4):
36              if (int(b[j])==a[i]) and (int(b[i])!=a[i]) and(int(b[j])!=a[j]):
37                  blow = blow + 1
38                  break
39  
40      print("blow:"+str(blow))
41  
42      if hit == 4:
43          print("当たり")
44          break
45      
46  exit()

blow判定注意

バグ発見．

    blow = 0
    for j in range(4):
        for i in range(4):
            if (int(b[j])==a[i]) and (int(b[i])!=a[i]) and(int(b[j])!=a[j]):
                blow = blow + 1
                break

だと，randomで作った数字が

[0,1,6,0]

に対して

[6,6,1,0]

と予測した場合に，

hit:1 blow:3

と判断される．正しくは，

hit:1 blow:2

でないとだめ．

重複した数字を選ばないようにするか，
はたまた，より厳密にblowを判断させるか．．．

より厳密なblow判定をさせるのは以下の通り．意外とめんどい．もっと楽なやり方があれば教えてください．

./python_codes/c5_hit_and_blow/c5_blow_rev.py

 1  a = [0, 1, 6, 0]
 2  b = [6, 6, 1, 0]
 3  hit = 1
 4  blow = 0
 5  a1 = sorted(a)
 6  b1 = sorted(b)
 7  print("sorted_a=", a1)
 8  print("sorted_b=", b1)
 9  i = 0
10  j = 0
11  print('b', 'i', 'j', 'a_i', 'b_i')
12  while True:
13      print(blow, i, j, a1[i], b1[j])
14      if int(b1[j]) == int(a1[i]):
15          blow += 1
16          i += 1
17          j += 1
18      else:
19          if int(b1[j]) > int(a1[i]):
20              i += 1
21          else:
22              j += 1
23      if i == 4 or j == 4:
24          break
25  
26  
27  print("blow:"+str(blow-hit))

source ~/Desktop/Lectures/lecture_22s/CompA/c5_hit_and_blow_text.org

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