Part II: Regular Expression 1. Chose match(es) for each given basic/extended regular expression (maybe multiple correct matches) and describe the pattern of matched string for 3),4),5),6),11 ). e.g. 'ab+a' (extended regex) a) ababa b) aba c)abba d)aabbaa e)aa Answer: b,c ; Pattern : The matched string should begin and end with ' a ' and ' b ' occurs at least once between leading and ending ' a ') Note: 1) to 5) are basic regexes; 1) 'a[ab]"a' (a)ababa (b) aaba (c) aabab (d) aabbaa (e)aa 2) 'a(bc)?' (a) abc (b) a(bc)? (c) a(bc (d) a (e) abcbc 3) ':[ind]*" (b) window (c) end (d) good (e)will 4) ' [az]+[az] ' (a) a+b+c(b)+b (c) x (d) x+1 (e) x+a Note: 5) to 12 ) are extended regexes. 5) '[a-z] (\+[az])+ ' (a) a+b+c(b)+b (c) x (d) x+1 (e) x+a 6) 'a. [bc]+' (a)azbc (b) az (c) azbcbc (d) acc (e)acz 7) 'a.[0-9]' (a) azz (b) a0z (c) a01 (d) a0a (e)aza 8) '[a-z]+[1.1?!]' (a)good! (b) Book. (c) hard? (d) cool?hot (e)nothing 9) ' [az]+[\.?!]\s[AZ] ' (hint: \s matches any whitespace characters) (a)Grade. A (b) book. Z (c) E. G (d) Level. a (e)index?a 10) '(very ) +( cool )?(good|bad) weather' (a) good weather (b) very good weather (c) cool weather (d) very cool bad weather (e)cool good weather 11) '-?[0-9]+' (a) 3312 (b) 2231 (c) +32 (d) 0.5 (e) 2/3 12) "-?[0-9]"\.?[0-9] *" (a) 3312 (b) 2231 (c) + 2 (d) 0.5 (e) 2/3