Given a string x (1<=len(x)<=1000) find the length of its longest palindromic subsequence. The string contains only lowercase letters. Write a program that takes in input as String x and returns the length of the longest palindromic subsequence of x.
Input Format:
String input.
Output Format:
return the length of the longest palindromic subsequence.
Example :
Input:
ababa
Output:
5
Explanation:
Length of longest palindromic sequence is 5 that is “ababa”.
Solution:
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