Informatics1-2019/HW3

A MathWikiből
A lap korábbi változatát látod, amilyen Gaebor (vitalap | szerkesztései) 2019. október 7., 14:00-kor történt szerkesztése után volt.

REGEX

You have to write regular expressions matching specific patterns. Use this page: https://regex101.com/ and don't forget to set python flavor.

Tartalomjegyzék

Leap years (2 points)

Match the leap years in this specific way: a positive integer divisible by 4, except multiples of 100.

Example

These should be matched:

  • 4
  • 8
  • 12
  • 16
  • 160
  • 164
  • 1024
  • 2008
  • 2056
  • 20080
  • 1048576

These should not match:

  • 1
  • 2
  • 3
  • 5
  • 9
  • 11
  • 13
  • 21
  • 22
  • 23
  • 100
  • 0
  • 2000
  • 1600
  • 200800

Vowel harmony (2 points)

The expression should find words containing only lowercase, latin characters.

  • A word should be matched if it uses only the same vowel every time
  • contains at least two vowels
  • It can start with any number of consonants, or a vowel.
  • two vowels should not be next to each other.
  • it should match a whole word

Hint

For vowels you can use:

   [aeiou]

And for consonants:

   [^aeiou\s]

Also put \b in front and to the end, to make sure it matches a whole word.

Example

These should be matched:

  • mammal
  • mama
  • uru
  • chlorophorm
  • oppo
  • imimi
  • xerxes
  • these

These should not match:

  • mammut
  • url
  • choroid
  • opponent
  • coop
  • iii

Handing in

Write the two regular expressions in an email to info1hazi@gmail.com from your math account. The subject should be:

   A1_HW3_<username>

Deadline

2019. October 13th 23:59

Személyes eszközök