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(問題2)を取り組んでみる。
コード(Emacs)
Python 3
#!/usr/bin/env python3
''' 問題 '''
deck = [f'{num}_{suit}'
for num in ['A'] + list(range(2, 11)) + ['J', 'Q', 'K']
for suit in ['C', 'D', 'H', 'S']]
def output_first_card(numbers, one, two, cards):
one_number, two_number = numbers[one], numbers[two]
if one_number < two_number:
hidden, other = one, two
encode = two_number - one_number
else:
hidden, other = two, one
encode = one_number - two_number
if encode <= 6:
dir = 'left'
else:
dir = 'right'
encode -= 6
print(f'First card is: {cards[other]} (from {dir})')
return hidden, other, encode
def output_next_three_cards(code, ind):
if code == 1:
second, third, fourth = ind[0], ind[1], ind[2]
elif code == 2:
second, third, fourth = ind[0], ind[2], ind[1]
elif code == 3:
second, third, fourth = ind[1], ind[0], ind[2]
elif code == 4:
second, third, fourth = ind[1], ind[2], ind[0]
elif code == 5:
second, third, fourth = ind[2], ind[0], ind[1]
else:
second, third, fourth = ind[2], ind[1], ind[0]
print('Second card is:', deck[second])
print('Third card is:', deck[third])
print('Fourth card is:', deck[fourth])
def computer_assistant(number):
print('Cards are character strings as show below.')
print(f'Ordering is: {deck}')
cards, cind, cardsuits, cnumbers = [], [], [], []
numsuits = [0, 0, 0, 0]
cards = []
i = 0
while len(cards) < 5:
number = number * (i + 1) // (i + 2)
n = number % 52
card_new = deck[n]
if card_new not in cards:
cards.append(card_new)
cind.append(n)
cardsuits.append(n % 4)
cnumbers.append(n // 4)
numsuits[n % 4] += 1
if numsuits[n % 4] > 1:
pairsuit = n % 4
i += 1
cardh = []
for i in range(5):
if cardsuits[i] == pairsuit:
cardh.append(i)
hidden, other, encode = output_first_card(cnumbers, *cardh[:2], cards)
remindices = [cind[i] for i in range(5)
if i != hidden and i != other]
remindices.sort()
output_next_three_cards(encode, remindices)
guess = input('What is the hidden card? ')
if guess == cards[hidden]:
print('You are a Mind Reader Extraordinaire!')
else:
print('Sorry not impressed!')
print(f'(hidden card: {cards[hidden]})')
if __name__ == '__main__':
while True:
s = input(f'Please give random number of at least 6 digits: ')
if s == 'q':
break
try:
number = int(s)
if number > 99999:
computer_assistant(number)
except ValueError as err:
print(err)
入出力結果(Terminal, Jupyter(IPython))
$ ./sample2.py Please give random number of at least 6 digits: 100000 Cards are character strings as show 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'] First card is: 7_D (from left) Second card is: 10_S Third card is: 8_S Fourth card is: 8_C What is the hidden card? A_D You are a Mind Reader Extraordinaire! (hidden card: A_D) Please give random number of at least 6 digits: 111111 Cards are character strings as show 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'] First card is: 5_D (from left) Second card is: 2_D Third card is: 5_S Fourth card is: 4_C What is the hidden card? 3_D You are a Mind Reader Extraordinaire! (hidden card: 3_D) Please give random number of at least 6 digits: 1111111 Cards are character strings as show 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'] First card is: Q_D (from left) Second card is: 10_S Third card is: 4_C Fourth card is: 7_H What is the hidden card? 7_D You are a Mind Reader Extraordinaire! (hidden card: 7_D) Please give random number of at least 6 digits: 11111111 Cards are character strings as show 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'] First card is: J_D (from right) Second card is: 7_H Third card is: 8_S Fourth card is: A_S What is the hidden card? A_D You are a Mind Reader Extraordinaire! (hidden card: A_D) Please give random number of at least 6 digits: 888888 Cards are character strings as show 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'] First card is: 10_H (from left) Second card is: J_D Third card is: A_C Fourth card is: K_S What is the hidden card? 7_H You are a Mind Reader Extraordinaire! (hidden card: 7_H) Please give random number of at least 6 digits: q $
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