#(1) Write Python expressions that correspond to each of the following statements:
#The sum of the five even integers from 2 to 10.
startingNumber = 2
endingNumber = 10
sum = startingNumber

nextEven = 4
while nextEven <= 10:
    sum = sum + nextEven
    nextEven = nextEven + 2
print(sum)

#The average of this group of test scores: 75%, 83.5%, 61%, 43%
scores = [75.00,83.5,61.00,43.00]
sumScores = 0
for i in range(len(scores)):
    sumScores = sumScores + scores[i]
average = sumScores / len(scores)
print(average)

#2 to the 10th power
base = 2
power = 10
result = 0
for i in range(power):
    if i == 0:
        result = base
    else:
        result = result * base
print(base, 'to the power of ', power, ' will equal ', result)

#A moving anteater has a mass of 50 kg and a velocity (speed) of 15 meters per second.
#Compute its kinetic energy using this formula: 1/2 times the mass times the velocity squared.
mass = 50.0
velocity = 15.0
kineticEnergy = 0.0

print('The Kinetic Energy of a Moving Anteater is: ',(mass/2) * (velocity**2))


#(2) We're designing a game where players can create castle defenses against invaders. Each side of the castle consists of a sequence of wall parts and cannons: We represent a six-segment side with no cannons as 'wwwwww'; a five-segment side with one cannon in the middle would be 'wwcww'.
#Define these two variables:

wall = 'w'
cannon = 'c'
#Using the variables wall and cannon, the string operators + and *, and parentheses, write string expressions that evaluate to:
def wallNoCannon():
    return wall*6
def wallWithCannon():
    return (wall*2+cannon+wall*2)
#"wc"
print(wall+cannon)
#"wcw"
print(wall+cannon+wall)
#"wwwcwww"
print(wall*3+cannon+wall*3)
#"wccwccwccwcc"
print((wall+cannon*2)*4)
#"wwwcwwwcwwwcwwwcw"
print((wall*3+cannon)*4+wall)
#"wwwwcwwwwcwwwwcwwwwcwwww"
print((wall*4+cannon)*3+wall*4)

#(3) Scores on a quiz range from 0 to 5. Suppose we have the following assignment
#statement (which represents the quiz scores of all the students in a class):

#Using the variable test_scores and the indexing operators, write four
#separate expressions whose values are each of the following: quiz score
#for the 1st student, the 5th student, the 10th student, and the 16th student.
#Remember zero-based indexing.

test_scores = "4325220523455023"

print(test_scores[3])
print(test_scores[4])
print(test_scores[9])
print(test_scores[15])

#(4) Suppose we have the following assignment statement:

s = "anteater"
#For each of the following, write a boolean expression that represents the
#English statement:

#The first character of string s is "a"
print(s[0] == 'a')
#The last character of string s is "r"
print(s[len(s)-1] == 'r')
#The fourth character of string s is "x"
print(s[3] == 'x')
#The first three characters of string s match the string "zot"
print(s[0:2] == 'zot')

#(5) Write Python assignment statements that correspond to each of the following:

#Assign 3.14159 to variable pi
pi = 3.14159
print(pi)
#Assign the values "Toyota", "Camry", and 2014 to the variables make, model,
#and year
make, model, year = 'Toyota','Camry','2014'
print(make,model,year)
#Assign a list containing strings "Computer Science", "Informatics", and
#"Computer Game Science" to the variable 
ICS_majors
ICS_majors= ['Computer Science','Informatics','Computer Game Science']
#Assign the variable a to be the average of the odd numbers from 3 to 9.
a = 3
numbers = []
average = 0
sumNumbers = 0
while a <= 9:
    if a == 3:
       numbers.append(a)
       average = average + 1
    if(a + 2 <= 9):
       average = average + 1
       a = a + 2
       numbers.append(a)
    else:
        break
for i in range(len(numbers)):
    sumNumbers = numbers[i] + sumNumbers
a = float(sumNumbers/average)
print(a)

#(6) Write boolean expressions corresponding to each of the following statements:

#20 plus 35 is greater than 2 to the power of 4
print((20+35)>(2**4))
#The string "hello" is not equivalent to the string "goodbye"
print('hello' == 'goodbye')
#The remainder when 10 is divided by 3 is less or equal to 1.
print((10%3) <= 1)
#The list ["apple", "orange", "banana", "mango"] contains 5 elements.
fruits = ["apple", "orange", "banana", "mango"]
print(len(fruits)==5)
#The number 63 is an even number.
print((63%2)==0)

#(7) Start with the following assignment statement:
s = "abcdefghijklmnopqrstuvwxyz"

#Using only string concatenation and the indexing operator on the string s,
#write Python expressions that result in the following:

#"dog"
print(s[s.index('d')]+s[s.index('o')]+s[s.index('g')])
#"tv"
print(s[s.index('t')]+s[s.index('v')])
#"ics"
print(s[s.index('i')]+s[s.index('c')]+s[s.index('s')])
#"uci"
print(s[s.index('u')]+s[s.index('c')]+s[s.index('i')])
#function version of previous problem
def makeAWord(wordString):
    s = "abcdefghijklmnopqrstuvwxyz"
    returnWord = ''
    for i in range(len(wordString)):
        returnWord = returnWord + s[s.index(wordString[i])]
    print(returnWord)

makeAWord('wowthisisreallycoolhellowow')