Question: Write a function that takes in a string and returns the length of the longest palindromic subsequence of the string. A palindromic subsequence is a

Write a function that takes in a string and returns the length of the longest palindromic subsequence of the string. A palindromic subsequence is a sequence of characters in the string that is the same when read forwards or backwards, but does not necessarily have to be a contiguous substring. For example, if the input string is "character", the function should return 5, since the longest palindromic subsequence is "carac".

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