Answer :
A simple solution is to take each subsequence out one at a time and then check to see if the resulting string is a palindrome. Exponential temporal complexity characterizes this solution.
What are a string and its uses?
A string is typically a series of characters used in computer programming, either as a literal constant or as a type of variable. The latter can either have a fixed length or allow for element mutations and length changes. A string is often regarded as a data type and is frequently implemented as an array data structure made up of bytes (or words) that use character encoding to hold a sequence of components, typically characters.
The ability to return a number's variant (String) representation is a function of a string.
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