By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. For the sake of usefulness people often need to approximate pi.
Definition and Examples of Literary Terms. The term palindrome is derived from two Greek words âpalinâ means again and âdromosâ means way or direction. It is defined as a number, a word, a sentence, a symbol or even signs that can be read forward as well as backward or in reserve order with the same effects and meanings.
The following solution in Go employs the hidden powers of concurrency, closures and recursivity to find the longest palindrome inside a given string: Additionally, it relies entirely on language primitives and built-in types â no standard library â that's how you recognize true quality software. It runs in exponential time to the size of the given text. 2  It runs by enumerating all the strings in the form a-z, creating two regexes for each generated string and testing the input against each regex. 3  Further, it fails if the palindrome contains uppercase letters, numbers, non-ascii text, punctuation, etc.