# 1. Given a list x, what is the index of the last item in the list






# 2. True/False: Both of the following for loops
# would generate the same number of loop iterations:
#
# for num in range(2):
#     do something
#
# for num in range(1, 2):
#     do something






# 3. Write a function that takes a string
# and returns the sum of all integers in the string.
# Return 0 if there is no integer in the string.
# Note: a given string can consist of words and numbers
# that are separated by single spaces.
#
# Example:
#  s = 'Today is day 18 of April'
#    the function will return 18
#  s = 'Today is day 18 of April and tomorrow is day 19'
#    the function will return 37
#  s = 'Final exam is on the third of May'
#    the function will return 0








# 4. Write a function that takes 2 dictionaries
# and returns a merged dictionary
# You may assume all values are string
# Example:
#   d1 = {'a':'a', 'b':'b', 3:'c', 'x':'5', 'y':'6', 'z':'7'}
#   d2 = {1:'111', 3:'222', 4:'333', 'y':'6', 'z':'7'}
# the function would return
#   {1: '111', 'x': '5', 3: 'c222', 4: '333', 'y': '66', 'b': 'b', 'a': 'a', 'z': '77'}