Question

Problem 20 [ 2 points ]

Use the Design Recipe to write a function, print_histogram that consumes a list of numbers and prints a histogram graph using asterisks to represent each number in the list. Use one output line per number in the list. You may assume that only integers are passed to this function. Your function should ignore negative values. Include a docstring!

Test	Result
print_histogram([ 0, 2, 4, 1])	** **** *
print_histogram([10, 5, 3, -1, 8])	********** ***** *** ********

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Part 2

Use the Design Recipe to write a function, count_odds, that consumes a list and two integers, lower_bound and upper_bound, and returns the number of all the odd integers in the list that are between lower_bound and upper_bound (inclusive of both lower_bound and upper_bound). Include a docstring!

For example:

Test	Result
print(count_odds([0, 100, 50, 20], 10, 60))	0
print(count_odds([1, 100, 85, 63, 52, 60, 50], 50, 100))	2
print(count_odds([-17, -20, -33, 41, 19, 61], -17, 61))	4

Answer 1

Answer:

def print_histogram(lst):
    for x in lst:
        if(x>0):
            print("*"*x)

###############################

def count_odds(lst, lower_bound, upper_bound):
    count = 0
    for x in lst:
        if (x>=lower_bound) and (x<=upper_bound):
            if(x%2==1):
                count += 1
    return count