Erinevus lehekülje "Itx8071-task1" redaktsioonide vahel

Redaktsioon: 26. august 2015, kell 19:31

To be announced.

@@ 1. rida: / 1. rida: @@
-This homework assignment requires the knowledge from Module 3.
+To be announced.
-Please write a regular expression for matching the sequence of hexadecimal numbers
-which follows these rules:
-) The sequence consists of one or more parts. If there are two or more parts,
-they are separated with a comma (",") character.
-) Each part of the sequence is a hexadecimal number which must contain the
-following characters only: 0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f.
-Each hexadecimal number must consist of '''even''' number of hexadecimal digits
-(for example, 2A, 1276, 1EA17C, 00A48390, etc.).
-Also, each hexadecimal number may be prefixed by an optional minus ("-") or
-plus ("+") sign.
-Please note that for accomplishing the task, one regular expression has
-to be submitted which is suitable for use with the ''egrep'' or ''pcregrep'' tool.
-It is not acceptable to submit the solution in a fragmented way (e.g.,
-several isolated expressions for addressing different parts of the task).
-Also, it is not allowed to submit programs in Java, Python, Perl
-(or any other language) for the solution.
-'''Examples of sequences the regular expression must match''':
-* 123456               (the sequence has one valid hexadecimal number)
-* 9A15,F3D50C          (the sequence has two valid parts)
-* B1250022,-1754FF     (the sequence has two valid parts, with the second hexadecimal having a minus sign)
-* +81,-A20E17,0201     (the sequence has three valid parts, with the first hexadecimal having a plus sign and the second hexadecimal a minus sign)
-* C1,10,33,+411D8C,00,A0,-71,-80      (the sequence has eight valid parts)
-'''Examples of sequences the regular expression must NOT match''':
-* 11, 22         (the second part begins with a space character which is illegal)
-* A 2,33         (the first part contains a space character which is illegal)
-* 9A,            (the first part ends with comma, but there is no following second part)
-* 1G9A           (the number contains an illegal character G)
-* -+F2           (the number begins with two signs, but only one sign is allowed)
-* 2-1            (the minus sign illegally appears in the middle of a number)
-* 72,,89         (the second part of the sequence is empty)
-* 12,-ABC,+84    (the second part does not consist of even number of hexadecimal digits)
-* P$12,43,22     (the sequence begins with illegal characters)
-* B2C3,12+T      (the sequence ends with illegal characters)

Erinevus lehekülje "Itx8071-task1" redaktsioonide vahel

Redaktsioon: 26. august 2015, kell 19:31

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