Freestyle Sparring

struct Person {
  first_name: String,
  last_name: String,
}

impl Person {
  fn greet(&self) -> String {
    format!("Hello, my name is {} {}", self.first_name, self.last_name)
  }
}
fn person_builder(first_name: &str, last_name: &str) -> Person {
    Person { first_name: first_name.to_owned(), last_name: last_name.to_owned() }
}

const code = String.raw`
# JohanWiltink

B = \ f g x . f (g x)
I = \ x . x
K = \ x _ . x
Y = \ f . ( \ x . f (x x) ) ( \ x . f (x x) )
True = \ t f . t
False = \ t f . f
Succ = \ n z s . s n
Pred = \ n . n 0 I
Plus = \ m n . m n (B Succ (Plus n))
Minus = \ m n . m 0 (B (n m) Minus)
Times = \ m n . m 0 (B (Plus n) (Times n))
isZero = \ n . n True (K False)
isNotZero = \ n . n False (K True)
And = \ x y . x y x
Or = \ x . x x
GT = \ x y . isNotZero (Minus x y)
Mod = \ n m . ( \ r . isZero (Minus m r) 0 r ) (( \ n m . ( \ d . isZero d n (Mod d m) ) (Minus n m) ) n m)

# function isPrime(n) {
#   const trial = function trial(i) {
#     return i * i > n || n % i != 0 && trial(i+1) ;
#   } ;
#   return n > 1 && trial(2) ;
# }

isPrime = \ n . ( \ trial . And (GT n 1) (trial 2) )
                ( Y \ trial i . Or (GT (Times i i) n) (And (isNotZero (Mod n i)) (trial (Succ i))) )
`

def fizz_buzz(m):
    return ["Fizz"*int(n%3==0)+"Buzz"*int(n%5==0)  if (n%3==0 or n%5==0) else n for n in range(1,m)]
    

def convert_decimal_roman(number: int) -> str:
    try:
        number = int(number)
    except ValueError:
        print("Invalid Input, Value Error")
        return("Invalid Input")
    str = ''
    numDct = {1000: "M",
              900: "CM",
              500: "D",
              400: "CD",
              100: "C",
              90: "XC",
              50: "L",
              40: "XL",
              10: "X",
              9: "IX",
              5: "V",
              4: "IV",
              1: "I"}
    
    decimals = []
    for key, value in numDct.items():
        decimals.append(value * (number // key))
        number %= key
        
    return "".join(decimals)

from gmpy2 import is_prime as prime_checker

def removeEverySecond(string):
    return string[::2]

public class FizzBuzz
{
    public string GetOutput(int number) {
      if (number % 15 == 0) return "FizzBuzz";
      else if (number % 3 == 0) return "Fizz";
      else if (number % 5 == 0) return "Buzz";
      else return number.ToString();
      // Fizz buzz is a popular computer science interview question.  
      // The function above is given a number - if the number is
      // divisible by 3, return "fizz", if it's divisible by 5, 
      // return "buzz", if not divisble by 3 or 5 - return the
      // number itself.
    }
}