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- function is_palindrome(str)
- local len = string.len(str)
- for i = 1, math.floor(len / 2) do
- if string.sub(str, i, i) ~= string.sub(str, len - i + 1, len - i + 1) then
- return false
- end
- end
- return true
- end
- print(is_palindrome('ab'))
- print(is_palindrome('aba'))
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