Question

4. Write regular expressions that match the descriptions given below. (10 P Description A sequence of digits of any length that also contains the sequence of four letters "meow", in that order, anywhere in the Expression sequence. A sequence of zero or more x's and y's, OR zero or one z's. 3 The American word color, or the British spelling (colour). Your answer can NOT include an or. 4 A string that begins with an X and ends with an !, with one or more letters in between. 5 A string of even digits, of any length.

Answer 1

Answer ::

1. [0-9]*meow[0-9]*

2. (x*y*) + (z*)

3. col(ou + o)r

4. X.+!

5. ([0-9][0-9])*

Please do give a good rating :)