# p1.py - Practice question 1.
# Given a list of 10 numbers, see if it contains a 3, and tell me 
# the location of the 3.

L = [ 8, 0, 4, 5, 4, 7, 3, 2, 6, 1 ]

# Before we start looking, let's assume the number
# is not in the list.  Then we should start with
# a bogus location, like a negative address.

location = -1
found = False

for i in range(0, 10):
    if L[i] == 3:
        found = True
        location = i
        
if found == True:
    print "I found the number 3 at location " + str(location)
else:
    print "I could not find the number 3 in the list"




# ------------------------------------------------------------------
# p2.py - Practice question 2.
# Find the largest of 5 numbers in a list.

L = [ 5, 4, 7, 3, 2 ]

# Let's begin by assuming that the first number is the largest.
# For each number in the list, if it's larger, then reset max
# to that value.

max = L[0]
for number in L:
    if number > max:
        max = number
    
print "The largest number is " + str(max)





# ------------------------------------------------------------------
# p3.py - Practice question 3
# Find the average of 5 numbers in a list

L = [ 5, 4, 7, 3, 2]

sum = 0
for number in L:
    sum = sum + number
    
average = sum / 5

print "The average is " + str(average)




# ------------------------------------------------------------------
# p4.py - Practice question 4
# Given a word, see if it has a double letter.

# For example, here is a 10-letter word.
word = "accounting"

foundDouble = False
for i in range(0, 9):                      # don't go too far!
    if word[i] == word[i+1]:
        foundDouble = True
        
if foundDouble == True:
    print "Yes, there is a double letter"
else:
    print "No, there is no double letter"
    


    
# ------------------------------------------------------------------    
# p5.py - Practice question 5
# Given 7 cards, determine how many are face cards.

hand = [ 'A', '7', '3', 'Q', 'K', '8', '9' ]

facecards = 0
for card in hand:
    if card == 'J' or card == 'Q' or card == 'K':
        facecards = facecards + 1

print "I found " + str(facecards) + " facecards"




# ------------------------------------------------------------------
# p6.py - Practice question 6
# Print the first 20 powers of 2.
# Note:  to raise a number to a power, use '**'

for i in range (1, 21):
    print 2**i




# ------------------------------------------------------------------
# p7.py - Practice question 7
# Ask the user for 3 sides of a triangle.
# Determine if the triangle is equilateral, isosceles or scalene.
# Let's assume that the sides are in increasing (ascending) length.

print ("Please enter the 3 sides of the triangle in increasing order.")

a = input("Enter first side of triangle")
b = input("Enter second side")
c = input("Enter third side")

if a == b and b == c:
    print "Your triangle is equilateral."
elif a == b or a == c or b == c:                 # note word "elif"
    print "Your triangle is isosceles."
else:
    print "Your triangle is scalene."




# ------------------------------------------------------------------
# p8.py - Practice question 8
# Ask the user for 3 sides of a triangle, and see if it's a right triangle.
# Let's assume the numbers are entered in ascending order.

print ("Please enter sides of triangle in increasing order.")

a = input("Please enter side a")
b = input("Please enter side b")
c = input("Please enter side c")

if c*c == a*a + b*b:
    print "You have a right triangle!"
else:
    print "Your triangle is not a right triangle."


    
    
# ------------------------------------------------------------------    
# p9.py - Practice question 9
# Ask user for number, and print all its divisors.

value = input("Please enter a positive number.")

print "Here are the divisors of your number:"
for i in range (1, value+1):
    if value % i == 0:
        print i