import math
  
def getPwd(maxTries = 3):
  for i in range(maxTries):
    print("Enter your password: ", end = "")
    pwd = input()
    #print(pwd, pwd == '12345'); input()
    match = pwd == '12345'
    if match: return True
  return False
  
if not getPwd(): exit()
  
# input values
years = 10 #number of years making monthly deposits
D = 100 #dollars deposited per month

# output (calculated) values 
p = 0.075 / 12 # monthly rate
T = years * 12 # number of months
S = D * ((math.pow(1 + p, T) - 1) / p)

# echoing input values, not rounded
print("In", years, "years, $", end = "")
print(D, "deposited per month will grow to $", end = "")

# rounded output (see 4.1)
SFormatted = "%.2f" % S
print(SFormatted, ".", sep = "") 

def askQuestion(question, correctAnswer):
  userAnswer = input(question)
  if userAnswer.lower() in correctAnswer:
    print("Correct")
    return 1
  else:
    print("Wrong!")
    return 0

nCorrect = 0
nCorrect += askQuestion("Who heads Microsoft?", ("bill gates", "gates"))
nCorrect += askQuestion("100 - 99 =", ("1", "one"))
nCorrect += askQuestion("12 + 21 =", ("33"))

print("Correct:", nCorrect, "out of 3.")


# tuples, "arrays", lists, and maps
# objects

a = (85, 100, 98, 97, 84) # tuple
print(len(a))

for value in a:
  print(value)
  
if 98 in a:
  print("Found")
  
b = 98 in a
if b:
  print("Found")
  
print("\nArrays")  
a = [85, 100, 98, 97, 84] # array
a = "85 100 98 97 84".split()
for i in range(len(a)):
  a[i] = int(a[i])
  
print(len(a))

for value in a:
  print(value)
  
if 98 in a:
  print("Found")
  
a[2] = 99
b = 98 in a
if b:
  print("Found")
  
print("\nArray-based lists")  
a = [None for i in range(5)]
n = 0 # number of used positions
print(len(a))
print(a)

if n < len(a):
  a[n] = "Hey Jude"
  n += 1
if n < len(a):
  a[n] = "She loves you"
  n += 1
if n < len(a):
  a[n] = "Paperback writer"
  n += 1
if n < len(a):
  a[n] = "Come together"
  n += 1
if n < len(a):
  a[n] = "Revolution"
  n += 1
if n < len(a):
  a[n] = 840
  n += 1
if n < len(a):
  a[n] = 841
  n += 1
if n < len(a):
  a[n] = 842
  n += 1
  
for i in range(n):
  for j in range(i, n):
    if a[j].lower() < a[i].lower():
      a[i], a[j] = a[j], a[i]
for i in range(n):
  print(a[i])
  
# list
a = []
a.append("Hey Jude")
del a[0]

# 13.5 MP3 Player
import random

songs = [None for i in range(200)]
nSongs = 0 # number of used positions

songs[nSongs] = "Hey Jude"; nSongs += 1
songs[nSongs] = "She loves you"; nSongs += 1
songs[nSongs] = "Paperback writer"; nSongs += 1
songs[nSongs] = "Come together"; nSongs += 1
songs[nSongs] = "Revolution"; nSongs += 1 
songs[nSongs] = "Yes It Is"; nSongs += 1
songs[nSongs] = "All I've Got to Do"; nSongs += 1
songs[nSongs] = "Within You Without You"; nSongs += 1
songs[nSongs] = "Getting Better"; nSongs += 1
songs[nSongs] = "I Feel Fine"; nSongs += 1

while True:
  index = random.randint(0, nSongs - 1)
  print(songs[index])
  answer = input("Continue? [Y/N]")
  if answer.lower()[0] == 'n': break




# 15.5 MP3 Player
import random

songs = [None for i in range(200)]
nSongs = 0 # number of used positions

songs[nSongs] = "Hey Jude"; nSongs += 1
songs[nSongs] = "She loves you"; nSongs += 1
songs[nSongs] = "Paperback writer"; nSongs += 1
songs[nSongs] = "Come together"; nSongs += 1
songs[nSongs] = "Revolution"; nSongs += 1 
songs[nSongs] = "Yes It Is"; nSongs += 1
songs[nSongs] = "All I've Got to Do"; nSongs += 1
songs[nSongs] = "Within You Without You"; nSongs += 1
songs[nSongs] = "Getting Better"; nSongs += 1
songs[nSongs] = "I Feel Fine"; nSongs += 1

MRU = [None for i in range(5)]

while True:
  
  while True:
    index = random.randint(0, nSongs - 1)
    if index not in MRU: break
  
  MRU.append(index)
  print(songs[index])
  del MRU[0]
  
  answer = input("Continue? [Y/N]")
  if answer.lower()[0] == 'n': break


# playing cards

class PlayingCard:
  value = None # 2-14 11=J 12=Q 13=K 14=A
  suit = None  # Spade, Heart, Diamond, Club
  
def sayCard(p): 
  print(p.value, "of", p.suit)
  
deck = []
for suit in ("Spades", "Hearts", "Diamonds", "Clubs"):
  for i in range(2, 15):
    p = PlayingCard()
    p.value = i
    p.suit = suit
    deck.append(p)
    
sayCard(deck[10])


# 12.3 playing cards
import random

class PlayingCard:
  value = None # 2-14 11=J 12=Q 13=K 14=A
  suit = None  # Spade, Heart, Diamond, Club
  
def sayCard(p):
  if p.value < 11: print(p.value, "of", p.suit)
  elif p.value == 11: print("Jack of", p.suit)
  elif p.value == 12: print("Queen of", p.suit)
  elif p.value == 13: print("King of", p.suit)
  elif p.value == 14: print("Ace of", p.suit)
    
deck = [] # the original 52-card deck
for suit in ("Spades", "Hearts", "Diamonds", "Clubs"):
  for i in range(2, 15):
    p = PlayingCard()
    p.value = i
    p.suit = suit
    deck.append(p)
    
# shuffle
for shuffle in range(10):
  for i in range(len(deck)):
    for j in range(i, len(deck)):
      if random.randint(0, 1) == 0:
        deck[i], deck[j] = deck[j], deck[i]
    
# deal to human and computer
humanDeck = []
computerDeck = []
pointer = False
while len(deck) != 0:
  p = deck[0]
  del deck[0]
  if pointer: humanDeck.append(p)
  else: computerDeck.append(p)
  pointer = not pointer

# go until there are no cards left  
while True:  
  while len(humanDeck) != 0 and len(computerDeck) != 0: 
    humanCard = humanDeck[0]; del humanDeck[0]
    computerCard = computerDeck[0]; del computerDeck[0]
    if humanCard.value > computerCard.value:
      print("\nHuman Wins!")
      sayCard(humanCard)
      sayCard(computerCard)
      break
    elif humanCard.value < computerCard.value:
      print("\nComputer Wins!")
      sayCard(computerCard)
      sayCard(humanCard) 
      break
    else:
      print("\nTie!")
      sayCard(computerCard)
      sayCard(humanCard) 
  if len(humanDeck) == 0 or len(computerDeck) == 0: break
  if input("Again? [Y/N]").lower()[0] == 'n': break
    
# 14.1
import random

# Compute and store the number to be guessed (1-10) using the random number generator
guessThis = random.randint(1, 10)

alreadyGuessed = []

while True:
  
  # Output the computer's challenge to the human, to try to guess the randomly selected number
  print("Guess a number between 1 and 10 inclusive")
  
  # Input and store the human's guess as a whole number
  myGuess = int(input())
  
  if myGuess == guessThis:
    print("You got it!")
    break
  elif myGuess in alreadyGuessed:
    print("You already guessed", myGuess)
  elif myGuess < guessThis:
    print("Too low")
    alreadyGuessed.append(myGuess)
  elif myGuess > guessThis:
    print("Too high")
    alreadyGuessed.append(myGuess)
        
  
#fin
fin = open("input.txt")
for line in fin:
  line = line.strip()
  line = line.split('\t')
  print(line)
fin.close()

#input.txt
one, 1, a
two, 2, b
three, 3, c

# text file output
fout = open("output.txt", "w")
fout.write("one, two, three\n")
fout.write("four, five, six\n")
fout.close()



# 9.2 and 9.3
s = "Hello, World" # an example
sEncoded = "" # an scrambled version of sOld
for i in range(len(s)): # for each char...
  sEncoded += chr(ord(s[i]) + 1) 
print("Encoded:", sEncoded)

sDecoded = ""
for i in range(len(sEncoded)): # for each char...
  sDecoded += chr(ord(sEncoded[i]) - 1)
print("Decoded:", sDecoded)



# 11.6 and 11.7
a = [4, 5, 2, 1, 3]
s = "Hello, World" # an example
sEncoded = "" # an scrambled version of sOld
for i in range(len(s)): # for each char...
  x = a[0]; del a[0]; a.append(x)
  sEncoded += chr(ord(s[i]) + x) 
print("Encoded:", sEncoded)

a = [4, 5, 2, 1, 3]
sDecoded = ""
for i in range(len(sEncoded)): # for each char...
  x = a[0]; del a[0]; a.append(x)
  sDecoded += chr(ord(sEncoded[i]) - x)
print("Decoded:", sDecoded)




# RSP with maps
import random

a = {}
a[(0, 'r')] = 'tie: rock'
a[(0, 's')] = 'computer wins: rock crushes scissors'
a[(0, 'p')] = 'human wins: paper covers rock'
a[(1, 's')] = 'tie: scissors'
a[(1, 'p')] = 'computer wins: scissors cuts paper'
a[(1, 'r')] = 'human wins: rock crushes scissors'
a[(2, 'p')] = 'tie: paper'
a[(2, 'r')] = 'computer wins: paper covers rock'
a[(2, 's')] = 'human wins: scissors cuts paper'

computer = random.randint(0, 2)
human = input("R, S, P:").lower()[0]

try:
  print(a[(computer, human)])
except:
  print("Invalid selection")