CSC111 Exercises on Loops and Strings

Exercise 1

What is output by the following code sections?

for i in range( 5 ):
    for j in range( 3 ):
         print i+j,
    print 

for i in range( 3 ):
    print '-' * i

for i in range( 4 ):
     for j in range( i ):
          print j * '-'

Exercise 2

Write the code necessary to take the string "jan31feb28mar31apr30" and generate the following output from it:

jan 1 2 3 4 5 6 7 8 9 10 11 ... 27 28 29 30 31
feb 1 2 3 4 5 6 7 8 9 10 11 ... 27 28 
mar 1 2 3 4 5 6 7 8 9 10 11 ... 27 28 29 30 31
apr 1 2 3 4 5 6 7 8 9 10 11 ... 27 28 29 30

Exercise 3

Use this Python Quick Refence guide for this Exercise.

Given the list of string poem shown below, generate the code that prints it as shown.

poem = [ "If the person you are talking to", "doesn't appear to be listening," , \
               "be patient. ", "It may simply be that he has", "a small piece of fluff in his ear." ]

If the person you are talking to  
Doesn't appear to be listening, 
Be patient. 
It may simply be that he has
A small piece of fluff in his ear.

If The Person You Are Talking To  
Doesn't Appear To Be Listening, 
Be Patient. 
It May Simply Be That He Has
A Small Piece Of Fluff In His Ear.

Solutions

def main():
    for i in range( 5 ):
        for j in range( 3 ):
             print i+j,
        print 

    for i in range( 3):
        print '-' * i

    for i in range( 4 ):
        for j in range( i ):
            print j * 'o'

    #              1    1
    #    0    5    0    5
    s = "jan31feb28mar31apr30"
    for i in range( 0, len( s ), 5 ):
        #print s[i]
        month =  s[i:i+3]
        days  =  s[i+3:i+5]
        days  = int( days )
        print month,
        for d in range( days ):
            print d+1,
        print

    poem = [ "If the person you are talking to", \
             "doesn't appear to be listening," , \
             "be patient. ", "It may simply be that he has", \
             "a small piece of fluff in his ear." ]
    for line in poem:
        #line = line.capitalize()
        words = line.split()
        newLine = ""
        for word in words:
            newLine = newLine + ' ' + word.capitalize()
        newLine = newLine[1:]  # get rid of first space
        newLine = newLine.center( 80 )
        print newLine
             
main()