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CS 116 Tutorial 6: Iteration
Reminders: Assignment 06 is due on Wed, March 11th at 10AM
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Write a function all_same_type that consumes a
list, called lst, and produces
True if all members of that list are of the
same type, else False.
For example:
all_same_type([2, 5, 3]) => True
all_same_type([2, "R", 4.56]) => False
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Write a Python function max_even_sum that
consumes a nonempty list of lists of positive integers,
lst. Evaluate in lst is a list of
positive integers. It computes the sum of the even integers
in each of the element lists in lst, and
produces the largest out of these sums. If a sublist
contains no even integers, its sum is zero.
For example:
max_even_sum([[], [3], [2,4,6]]) => 12
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Write a Python function sum_digits that
consumes a Nat (called n), and returns a
number represents the summation of its digits.
For examples:
sum_digits(1)=>1
sum_digits(55)=>10
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Write a Python function that consumes a natural number
n and produces a list of strings. The produced
list will look like
["", "1", "22", "333", "4444", "55555", ... , "nnnnn...nnnn"]
where the last element is the number n repeated
n times.
For examples:
make_list(0) => [""]
make_list(3) => ["", "1", "22", "333"]
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Write a function called valid_input that consumes a string to be used as the prompt, prompt,
and a list of strings of valid inputs, valid, and a positive integer max_guess.
The function should continuously prompt the user for input until the user enters a value in the list valid,
and then produces that value, or print a message when maximum number of guess is reached. If the user enters an invalid value,
the function will let them know by printing:
"Invalid input. Try again." to the screen.
If maximum number of guess is reached, the function will print "Maximum number of guess is reached"
For example:
If the user enters "6", "5", and "3",
valid_input("Enter a digit < 5: ", ["0", "1", "2", "3", "4"], 5) => "3" and the following is printed:
Enter a digit < 5: 6
Invalid input. Try again
Enter a digit < 5: 5
Invalid input. Try again
Enter a digit < 5: 3
Note: You may assume that the user enters input that is the correct type.
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