Re: subset function for string in c++

From: August Karlstrom <fusionfive@xxxxxxxxx>
Date: Wed, 28 Sep 2005 20:08:42 GMT

puzzlecracker wrote:

basically, I need to find out wether charecters in string a are subset of string b..

example

a: rx b:rwx that shall return true.

As this group is language independent i chose to write an implementation in Oberon:

   PROCEDURE Subset(a, b: ARRAY OF CHAR): BOOLEAN;
      VAR j, k: LONGINT;
   BEGIN
      j := 0;
      WHILE a[j] # 0X DO
         k := 0;
         WHILE (b[k] # 0X) & (b[k] # a[j]) DO INC(k) END;
         IF b[k] = 0X THEN RETURN FALSE END;
         INC(j)
      END;
      RETURN TRUE
   END Subset;


August
.

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