### Example:

(deftest p06-test (is (= true (palindrome? '(1 2 3 3 2 1)))) (is (= false (palindrome? '(1 2 3)))))

### Solution:

One definition of a palindrome is "a sequence of symbols or elements, whose meaning may be interpreted the same way in either forward or reverse direction" [Wikipedia]. The definition contains already a possible solution. To test whether a given sequence of elements is a palindrome we can compare it with the same sequence in reverse order. We can reuse the reverse function defined to solve the last problem.

## 1 comment:

I'm breaking my head trying to come up with an "effective" solution. By "effective" I mean not doing more steps than necessary.

But I agree that the most straightforward and elegant solution is to compare the original list with its reverse.

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