question about HW1

Question

Guys i have a question aout homework.1.

since the int_seq should be a string , containing several sequence of integers separated by commas, the integers themselves should only have 1 digit yes?

so for example the int_seq = '12,0,153,16' is not valid?

Answer 1

There is no limit to the number of digits. I think you wanted all numbers to be only one digit to create a list with the numbers, using a step = 2 so that you exclude the commas. 

There is a way to make a list of all the numbers from a string, if these numbers are separated by a character. The method is split(character) and in this case character is the comma, so

list = string.split(",")

 This will return a list of STRINGS (not int!) each containing one of the numbers.

Hope this helps.

Answer 2

It’s definitely a valid string. The integers can be made of n digits, up to the maximum value storable in memory.

If I remember correctly in the example there are some number with more than one digit.

Answer 3

Yes, that is a valid string, as the professors and the test did not tell us about any restriction of the number of digits a sequence can have.

I suggest either to use a list comprehension (but we haven't studied it yet), to write a list of ints, or you can even use the map function we have studied today with prof Mancini (obviously after applying the method .split(',')) if you don't want to use a for.

Answer 4

There shouldn't be a maximum for the numbers, you can see it yourself from the test strings.

It seems though (somebody correct me if I'm wrong, I haven't checked the entire file) that in the tests there are no more than 3 digits per number. See the screenshot down here.

So the sequence '12,0,153,16' is indeed valid