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  • axioma

    veterán

    Egy "feladvany" az interjus topik kedveert bemasolt formaban:

    Given a string s consisting only of letters 'a' and 'b'. In a single step you can remove one palindromic subsequence from s.
    Return the minimum number of steps to make the given string empty.
    A string is a subsequence of a given string, if it is generated by deleting some characters of a given string without changing its order.
    A string is called palindrome if is one that reads the same backward as well as forward.

    Example 1:
    Input: s = "ababa"
    Output: 1

    Explanation: String is already palindrome

    Example 2:
    Input: s = "abb"
    Output: 2

    Explanation: "abb" -> "bb" -> "". Remove palindromic subsequence "a" then "bb".

    Example 3:
    Input: s = "baabb"
    Output: 2

    Explanation: "baabb" -> "b" -> "". Remove palindromic subsequence "baab" then "b".

    Example 4:
    Input: s = ""
    Output: 0

    Constraints:
    0 <= s.length <= 1000
    s only consists of letters 'a' and 'b'

    [ Szerkesztve ]

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