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You do not need to sort by last character, only filter out cities not ending in vowels. In addition to the wildcard-vowel comparisons mentioned above, you could also use a case-insensitive ('i') regular expression ([aeiou]) to find cities that end ($) in vowels:
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You do not need to sort by last character, only filter out cities not ending in vowels. In addition to the wildcard-vowel comparisons mentioned above, you could also use a case-insensitive ('i') regular expression ([aeiou]) to find cities that end ($) in vowels:
Do some reading on regular expressions. http://www.techonthenet.com/oracle/regexp_like.php