CSC111 Midterm Solution 2015

--D. Thiebaut (talk) 13:23, 25 March 2015 (EDT)

---

# midterm2015
# solution

def question1():
    print( """
    strings are immutable
    lists are not immutable
    integers are not immutable
    floats are not immutable
    python is not a compiled language

    Literals:  1 True 6.3  "hello"
    """)

def question2():
    a = "Hello"
    b = 3
    c = 123
    d = a, b, a, c

    c, a, b, e = d

    print( a, b, c, d, e )
    # 3 Hello Hello ('Hello', 3, 'Hello', 123) 123

def question3():
    print( """

    def f1( a, b, c ):
       print( “{0:1}-{1:1} {1:1}”.format( a, b, c ) )
       print( “-“ * 60 )
   

    def f2( name ):
       print( name * 3 )

    # f2 needs to return stomething

    def r2d2( r100 ):
       f2( “hello” )
       a = f2( 3 )
           # f2 does not return anything
       b = f2( “3” )
         # f2 does not return anything
       f1( a, b, f2( “world!” ) )
 # f2("world!") is None

    def main():
       r2d2( 100 )
       f1( a, b, c )

        # a, b, c not defined

    main()
    
    """ )


    
def question4():
    x = 5 #input( "> " ) #5
    y = 4 #input( "> " ) #4
    x = int( x )
    y = int( y )

    for i in range( 1, x+1 ):
        print( "-" * y, "0" * i )

def question5():
    Nums = [1, -10, 2, 3, 4, -5, 100, 200, -150 ]

    sump = 0
    sumn = 0
    for i in range( len(  Nums ) ):
        if Nums[i] >= 0:
            sump = sump + Nums[i]
        else:
            sumn = sumn + Nums[i]
    print( sump, sumn )

def question6():
    def getPositiveList( nums ):
        newList = []
        for n in nums:
            if n > 0:
                newList.append( n )
        return newList
    Nums = [1, -10, 2, 3, 4, -5, 100, 200, -150 ]

    Numsp = getPositiveList( Nums )
    print( "Nums = ", Nums )
    print( "Numsp = ", Numsp )
    
def question7():
    Nums1 = [1, -10, 2, 30, 4, -51, 100, 2, 150 ]
    Nums2 = [3, -10, 21, 3, 41, -5, 100, 2000, -150 ]

    count = 0
    for i in range( len( Nums1 ) ):
        if Nums1[i] == Nums2[i]:
            count = count + 1
    print( "number of ints matching: ", count )

def question8():
    print( "Refer to the Python docs page at" )
    print( "https://docs.python.org/3.4/library/stdtypes.html#string-methods" )

def question9():
    name1 = "Alex"
    age1  = 12
    coef1 = 6.188888
    name2 = "Anastasia"
    age2  = 22
    coef2 = 8

    print( "12345678901234567890123456789012345678901234567890" )
    print( "name: {0:>10} age: {1:3} coefficient: {2:7.2f}/20".format( name1, age1, coef1 ) )
    print( "name: {0:>10} age: {1:3} coefficient: {2:7.2f}/20".format( name2, age2, coef2 ) )
    print()
    print( "12345678901234567890123456789012345678901234567890" )
    print( "name: {0:<9} age:{1:2} coefficient: {2:8.4f}/20".format( name1, age1, coef1 ) )
    print( "name: {0:<9} age:{1:2} coefficient: {2:8.4f}/20".format( name2, age2, coef2 ) )
    
def question10( n ):
    line = ""
    for i in range( n ):
       if i%2 == 0:
           line = line + "###"
       else:
           line = line + "   "
    return line

def question11( n ):
    if True!=True:
        print( 3 * n )
    else:
        if n % 3 == 0:
            print( "hello" )
        elif n % 5 == 0:
            print( "world!" )
        elif n == 7:
            print( "Spring Break!" )
        else:
            print( "sun" )
    print( "bye" )


    
def main():
    question1()
    question2()
    question3()
    question4()
    question5()
    question6()
    question7()
    question8()
    question9()

    for i in [1, 3, 6, 9]:
        print( question10( i ) )
        
    for i in [0, 15, 20, 21, 2 ]:
        question11( i )
main()