95 lines
2.3 KiB
Python
95 lines
2.3 KiB
Python
|
# This is a scratch pad for randomly selected questions
|
||
|
|
|
||
|
|
# def char_and_rest(i, xs):
|
||
|
|
# return xs[i], xs[:i] + xs[i+1:]
|
||
|
|
|
||
|
|
# def perms(xs):
|
||
|
|
# if len(xs) == 1:
|
||
|
|
# return [xs]
|
||
|
|
# result = []
|
||
|
|
# for i in range(len(xs)):
|
||
|
|
# c, rest = char_and_rest(i, xs)
|
||
|
|
# for perm in perms(rest):
|
||
|
|
# result.append(c + ''.join(perm))
|
||
|
|
# return result
|
||
|
|
|
||
|
|
# print(perms(list("woah")))
|
||
|
|
|
||
|
|
# def f(take_out, dine_in, served):
|
||
|
|
# j, k = 0, 0
|
||
|
|
# for i in range(len(served)):
|
||
|
|
# if j < len(take_out) and served[i] == take_out[j]:
|
||
|
|
# j += 1
|
||
|
|
# elif k < len(dine_in) and served[i] == dine_in[k]:
|
||
|
|
# k += 1
|
||
|
|
# else:
|
||
|
|
# return False
|
||
|
|
# if j < len(take_out) or k < len(dine_in):
|
||
|
|
# return False
|
||
|
|
# return True
|
||
|
|
|
||
|
|
# take_out = [17, 8, 24]
|
||
|
|
# dine_in = [12, 19, 2]
|
||
|
|
# served = [17, 8, 12, 19, 24, 2]
|
||
|
|
# print(f(take_out, dine_in, served))
|
||
|
|
|
||
|
|
# def match(a, b):
|
||
|
|
# if a == '{':
|
||
|
|
# return b == '}'
|
||
|
|
# if a == '[':
|
||
|
|
# return b == ']'
|
||
|
|
# if a == '(':
|
||
|
|
# return b == ')'
|
||
|
|
# return False
|
||
|
|
|
||
|
|
# def f(xs):
|
||
|
|
# s = []
|
||
|
|
# for c in xs:
|
||
|
|
# if c in {'{', '[', '('}:
|
||
|
|
# s.append(c)
|
||
|
|
# elif c in {'}', ']', ')'}:
|
||
|
|
# opener = s.pop()
|
||
|
|
# if not match(opener, c):
|
||
|
|
# return False
|
||
|
|
# return len(s) == 0
|
||
|
|
|
||
|
|
# assert f("{[]()}")
|
||
|
|
# assert f("{[(])}") == False
|
||
|
|
# assert f("{[}") == False
|
||
|
|
# print("Success!")
|
||
|
|
|
||
|
|
# def valid_bst(node):
|
||
|
|
# lhs = max_bst_value(node.left) if node.left else float('-inf')
|
||
|
|
# rhs = min_bst_value(node.right) if node.right else float('inf')
|
||
|
|
|
||
|
|
# return and([
|
||
|
|
# lhs <= node.value,
|
||
|
|
# rhs > node.value,
|
||
|
|
# valid_bst(node.left),
|
||
|
|
# valid_bst(node.right),
|
||
|
|
# ])
|
||
|
|
|
||
|
|
import random
|
||
|
|
import math
|
||
|
|
|
||
|
|
def shuffle(xs):
|
||
|
|
n = len(xs)
|
||
|
|
for i in range(n - 1):
|
||
|
|
j = random.randint(i + 1, n - 1)
|
||
|
|
xs[i], xs[j] = xs[j], xs[i]
|
||
|
|
return xs
|
||
|
|
|
||
|
|
def as_card(i):
|
||
|
|
if i not in range(1, 53):
|
||
|
|
raise Exception("Not a card")
|
||
|
|
# 1
|
||
|
|
suit = ['Hearts', 'Clubs', 'Diamonds', 'Spades'][math.floor((i - 1) / 13)]
|
||
|
|
n = ['Ace',2,3,4,5,6,7,8,9,10,'Jack','Queen','King'][(i - 1) % 13]
|
||
|
|
return '{} of {}'.format(n, suit)
|
||
|
|
|
||
|
|
xs = list(range(1, 53))
|
||
|
|
print(xs)
|
||
|
|
shuffle(xs)
|
||
|
|
for x in xs:
|
||
|
|
print(as_card(x))
|