Eng:Checking if a String Contains Characters

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Using a Custom Block in combination with an algorithm, one can quickly check if a particular string passed in as an argument has a list of characters within it.

Programming

The following script can be used to check the condition. The variable (condition) is evaluated to true of false depending on if the string has the particular characters. For this script, assume the following:

• "condition" is a variable used to determine true or false (the return variable)
• "i" is a variable used for iterating (moving form one character to another)
• "matches" is a variable used to determine the amount of characters detected in the base string
• "allLetters" is a list compiled of the characters being checked for; it is useful because lists have a built-in function for checking contained items

Note:

This is different than Checking if a String Contains a String because this script does not require the characters to be in sequential order.

define check if (base) has (characters)
set [condition v] to [false]
delete (all v) of [allLetters v]
set [i v] to (1)
repeat (length of (characters)) //adds each letter to a list
   add (letter (i) of (characters)) to [allLetters v]
   change [i v] by (1)
end
set [i v] to (1)
set [matches v] to (0)
repeat (length of (base))
   if <[allLetters v] contains (letter (i) of (base))>
      change [matches v] by (1)
   end
   change [i v] by (1)
end
if <(matches) = (length of [allLetters v])>
   set [condition v] to [true]
end

See Also

• Checking if a String Contains a String

— a similar script that requires the characters to be in order

• String