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Logic_1.py
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# Basic boolean logic puzzles -- if else and or not
# ----------------------------------------------------------------------------------------------------------------------
#
# When squirrels get together for a party, they like to have cigars.
# A squirrel party is successful when the number of cigars is between 40 and 60, inclusive.
# Unless it is the weekend, in which case there is no upper bound on the number of cigars.
# Return True if the party with the given values is successful, or False otherwise.
#
#
# cigar_party(30, False) → False
# cigar_party(50, False) → True
# cigar_party(70, True) → True
def cigar_party(cigars, is_weekend):
return cigars >= 40 if is_weekend else cigars in range(40, 61)
# ----------------------------------------------------------------------------------------------------------------------
#
# You and your date are trying to get a table at a restaurant.
# The parameter "you" is the stylishness of your clothes, in the range 0..10, and "date" is the stylishness of your
# date's clothes. The result getting the table is encoded as an int value with 0=no, 1=maybe, 2=yes.
# If either of you is very stylish, 8 or more, then the result is 2 (yes).
# With the exception that if either of you has style of 2 or less, then the result is 0 (no).
# Otherwise the result is 1 (maybe).
#
#
# date_fashion(5, 10) → 2
# date_fashion(5, 2) → 0
# date_fashion(5, 5) → 1
def date_fashion(you, date):
if you <= 2 or date <= 2:
return 0
elif you >= 8 or date >= 8:
return 2
else:
return 1
# ----------------------------------------------------------------------------------------------------------------------
#
# The squirrels in Palo Alto spend most of the day playing.
# In particular, they play if the temperature is between 60 and 90 (inclusive).
# Unless it is summer, then the upper limit is 100 instead of 90. Given an int temperature and a boolean is_summer,
# return True if the squirrels play and False otherwise.
#
#
# squirrel_play(70, False) → True
# squirrel_play(95, False) → False
# squirrel_play(95, True) → True
def date_fashion(you, date):
if you <= 2 or date <= 2:
return 0
elif you >= 8 or date >= 8:
return 2
else:
return 1
# ----------------------------------------------------------------------------------------------------------------------
#
# The squirrels in Palo Alto spend most of the day playing.
# In particular, they play if the temperature is between 60 and 90 (inclusive).
# Unless it is summer, then the upper limit is 100 instead of 90. Given an int temperature and a boolean is_summer,
# return True if the squirrels play and False otherwise.
#
#
# squirrel_play(70, False) → True
# squirrel_play(95, False) → False
# squirrel_play(95, True) → True
def squirrel_play(temp, is_summer):
return temp in range(60, 101 if is_summer else 91)
# ----------------------------------------------------------------------------------------------------------------------
#
# You are driving a little too fast, and a police officer stops you.
# Write code to compute the result, encoded as an int value: 0=no ticket, 1=small ticket, 2=big ticket.
# If speed is 60 or less, the result is 0. If speed is between 61 and 80 inclusive, the result is 1.
# If speed is 81 or more, the result is 2. Unless it is your birthday -- on that day,
# your speed can be 5 higher in all cases.
#
#
# caught_speeding(60, False) → 0
# caught_speeding(65, False) → 1
# caught_speeding(65, True) → 0
def caught_speeding(speed, is_birthday):
if not is_birthday:
if speed <= 60:
return 0
elif 61 <= speed <= 80:
return 1
else:
return 2
else:
if speed <= 65:
return 0
elif 66 <= speed <= 85:
return 1
else:
return 2
# ----------------------------------------------------------------------------------------------------------------------
#
# Given 2 ints, a and b, return their sum. However, sums in the range 10..19 inclusive, are forbidden, so in that
# case just return 20.
#
#
# sorta_sum(3, 4) → 7
# sorta_sum(9, 4) → 20
# sorta_sum(10, 11) → 21
def sorta_sum(a, b):
return 20 if a + b in range(10, 20) else a + b
# ----------------------------------------------------------------------------------------------------------------------
#
# Given a day of the week encoded as 0=Sun, 1=Mon, 2=Tue, ...6=Sat,
# and a boolean indicating if we are on vacation, return a string of the form "7:00"
# indicating when the alarm clock should ring.
# Weekdays, the alarm should be "7:00" and on the weekend it should be "10:00".
# Unless we are on vacation -- then on weekdays it should be "10:00" and weekends it should be "off".
#
#
# alarm_clock(1, False) → '7:00'
# alarm_clock(5, False) → '7:00'
# alarm_clock(0, False) → '10:00'
def alarm_clock(day, vacation):
a = "7:00" if not vacation else "10:00"
b = "10:00" if not vacation else "off"
return a if day not in [6, 0] else b
# ----------------------------------------------------------------------------------------------------------------------
#
# The number 6 is a truly great number. Given two int values, a and b, return True if either one is 6.
# Or if their sum or difference is 6. Note: the function abs(num) computes the absolute value of a number.
#
# love6(6, 4) → True
# love6(4, 5) → False
# love6(1, 5) → True
def love6(a, b):
return a == 6 or b == 6 or a + b == 6 or abs(a - b) == 6
# ----------------------------------------------------------------------------------------------------------------------
#
# Given a number n, return True if n is in the range 1..10, inclusive.
# Unless outside_mode is True, in which case return True if the number is less or equal to 1, or greater or equal to 10.
#
#
# in1to10(5, False) → True
# in1to10(11, False) → False
# in1to10(11, True) → True
def in1to10(n, outside_mode):
if n == 1 or n == 10:
return True
return (n in range(1, 11)) ^ outside_mode
# ----------------------------------------------------------------------------------------------------------------------
#
# Given a non-negative number "num", return True if num is within 2 of a multiple of 10.
# Note: (a % b) is the remainder of dividing a by b, so (7 % 5) is 2. See also: Introduction to Mod
#
#
# near_ten(12) → True
# near_ten(17) → False
# near_ten(19) → True
def near_ten(num):
within = num % ((num / 10) * 10) if num >= 10 else num
return within in [8, 9, 0, 1, 2]
# ----------------------------------------------------------------------------------------------------------------------