開発環境
- macOS Mojave - Apple
- Emacs (Text Editor)
- Python 3.7 (プログラミング言語)
問題解決のPythonプログラミング ―数学パズルで鍛えるアルゴリズム的思考 (Srini Devadas (著)、黒川 利明 (翻訳)、オライリージャパン)の3章(心を読む(準備をしてから))、練習問題(パズル問題4)を取り組んでみる。
コード(Emacs)
Python 3
#!/usr/bin/env python3
''' 問題4 '''
deck = [f'{num}_{suit}'
for num in ['A'] + list(range(2, 11)) + ['J', 'Q', 'K']
for suit in ['C', 'D', 'H', 'S']]
print('deck')
for i, card in enumerate(deck):
print(card, end=' ')
if i % 4 == 3:
print()
def computer_assistant_four_cards(number):
print('Cards are character strings as shown below.')
print(f'Ordering is: {deck}')
cards, card_indices, card_suits, card_numbers = [[] for _ in range(4)]
num_suits = [0 for _ in range(4)]
i = 0
while len(cards) < 4:
number = number * (i + 1) // (i + 2)
n = number % 52
card_new = deck[n]
if card_new not in cards:
cards.append(card_new)
card_indices.append(n)
card_suits.append(n % 4)
card_numbers.append(n // 4)
num_suits[n % 4] += 1
i += 1
for i in range(4):
for j in range(4):
if i == j:
break
t = (card_indices[i] - card_indices[j]) % 52
if 1 <= t <= 13:
encode = t
hidden_card = cards.pop(i)
if i < j:
first_card = cards.pop(j - 1)
else:
first_card = cards.pop(j)
second_card, third_card = cards
break
if len(cards) == 2:
break
if encode <= 8:
print('(front)')
if encode == 1:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(left)')
elif encode == 2:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(right)')
elif encode == 3:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(left)')
elif encode == 4:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(right)')
elif encode == 5:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(left)')
elif encode == 6:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(right)')
elif encode == 7:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(left)')
else:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(right)')
else:
print('(back)')
if encode == 8:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(left)')
elif encode == 9:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(right)')
elif encode == 10:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(left)')
elif encode == 11:
print(f'First card is: {first_card}(left)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(right)')
elif encode == 12:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(left)')
print(f'Third card is: {third_card}(left)')
else:
print(f'First card is: {first_card}(right)')
print(f'Second card is: {second_card}(right)')
print(f'Third card is: {third_card}(left)')
guess = input('What is the hidden card? ')
if guess == hidden_card:
print('You are a Mind Reader Extraordinaire!')
else:
print('Sorry, not impressed!')
print(f'(hidden: {hidden_card})')
if __name__ == '__main__':
while True:
s = input('Please give random number of at least 6 digits: ')
if s == 'q':
break
try:
number = int(s)
if number > 99999:
computer_assistant_four_cards(number)
except Exception as err:
print(err)
入出力結果(Terminal, Jupyter(IPython))
$ ./sample4.py deck A_C A_D A_H A_S 2_C 2_D 2_H 2_S 3_C 3_D 3_H 3_S 4_C 4_D 4_H 4_S 5_C 5_D 5_H 5_S 6_C 6_D 6_H 6_S 7_C 7_D 7_H 7_S 8_C 8_D 8_H 8_S 9_C 9_D 9_H 9_S 10_C 10_D 10_H 10_S J_C J_D J_H J_S Q_C Q_D Q_H Q_S K_C K_D K_H K_S Please give random number of at least 6 digits: 100000 Cards are character strings as shown below. Ordering is: ['A_C', 'A_D', 'A_H', 'A_S', '2_C', '2_D', '2_H', '2_S', '3_C', '3_D', '3_H', '3_S', '4_C', '4_D', '4_H', '4_S', '5_C', '5_D', '5_H', '5_S', '6_C', '6_D', '6_H', '6_S', '7_C', '7_D', '7_H', '7_S', '8_C', '8_D', '8_H', '8_S', '9_C', '9_D', '9_H', '9_S', '10_C', '10_D', '10_H', '10_S', 'J_C', 'J_D', 'J_H', 'J_S', 'Q_C', 'Q_D', 'Q_H', 'Q_S', 'K_C', 'K_D', 'K_H', 'K_S'] (back) First card is: 8_C(left) Second card is: A_D(right) Third card is: 8_S(right) What is the hidden card? 10_S You are a Mind Reader Extraordinaire! (hidden: 10_S) Please give random number of at least 6 digits: 888888 Cards are character strings as shown below. Ordering is: ['A_C', 'A_D', 'A_H', 'A_S', '2_C', '2_D', '2_H', '2_S', '3_C', '3_D', '3_H', '3_S', '4_C', '4_D', '4_H', '4_S', '5_C', '5_D', '5_H', '5_S', '6_C', '6_D', '6_H', '6_S', '7_C', '7_D', '7_H', '7_S', '8_C', '8_D', '8_H', '8_S', '9_C', '9_D', '9_H', '9_S', '10_C', '10_D', '10_H', '10_S', 'J_C', 'J_D', 'J_H', 'J_S', 'Q_C', 'Q_D', 'Q_H', 'Q_S', 'K_C', 'K_D', 'K_H', 'K_S'] (back) First card is: J_D(left) Second card is: A_C(right) Third card is: 7_H(left) What is the hidden card? K_S You are a Mind Reader Extraordinaire! (hidden: K_S) Please give random number of at least 6 digits: 111111 Cards are character strings as shown below. Ordering is: ['A_C', 'A_D', 'A_H', 'A_S', '2_C', '2_D', '2_H', '2_S', '3_C', '3_D', '3_H', '3_S', '4_C', '4_D', '4_H', '4_S', '5_C', '5_D', '5_H', '5_S', '6_C', '6_D', '6_H', '6_S', '7_C', '7_D', '7_H', '7_S', '8_C', '8_D', '8_H', '8_S', '9_C', '9_D', '9_H', '9_S', '10_C', '10_D', '10_H', '10_S', 'J_C', 'J_D', 'J_H', 'J_S', 'Q_C', 'Q_D', 'Q_H', 'Q_S', 'K_C', 'K_D', 'K_H', 'K_S'] (front) First card is: 4_C(right) Second card is: 5_S(left) Third card is: 3_D(left) What is the hidden card? 5_D You are a Mind Reader Extraordinaire! (hidden: 5_D) Please give random number of at least 6 digits: 1111111 Cards are character strings as shown below. Ordering is: ['A_C', 'A_D', 'A_H', 'A_S', '2_C', '2_D', '2_H', '2_S', '3_C', '3_D', '3_H', '3_S', '4_C', '4_D', '4_H', '4_S', '5_C', '5_D', '5_H', '5_S', '6_C', '6_D', '6_H', '6_S', '7_C', '7_D', '7_H', '7_S', '8_C', '8_D', '8_H', '8_S', '9_C', '9_D', '9_H', '9_S', '10_C', '10_D', '10_H', '10_S', 'J_C', 'J_D', 'J_H', 'J_S', 'Q_C', 'Q_D', 'Q_H', 'Q_S', 'K_C', 'K_D', 'K_H', 'K_S'] (front) First card is: 10_S(right) Second card is: 7_H(left) Third card is: 7_D(right) What is the hidden card? Q_D You are a Mind Reader Extraordinaire! (hidden: Q_D) Please give random number of at least 6 digits: 1 Please give random number of at least 6 digits: a invalid literal for int() with base 10: 'a' Please give random number of at least 6 digits: q $
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