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algorithmlanguage-agnostic

How do I check if a number is a palindrome?

How do I check if a number is a palindrome?

Any language. Any algorithm. (except the algorithm of making the number a string and then reversing the string).

Solution

  • This is one of the Project Euler problems. When I solved it in Haskell I did exactly what you suggest, convert the number to a String. It's then trivial to check that the string is a pallindrome. If it performs well enough, then why bother making it more complex? Being a pallindrome is a lexical property rather than a mathematical one.