Lower value shows better performance
- C
#include <stdio.h> int fib(int n) { if(n == 1) return 0; if(n == 2) return 1; return fib(n - 2) + fib(n - 1); } int main() { int i = 0; for(i = 1; i <= 40; i++) { printf("%d %d\n", i, fib(i)); } printf("\nC\n"); return 0; } - Java
public class Fib { public static int calc(int n) { if(n <= 1) return 0; if(n == 2) return 1; return Fib.calc(n - 2) + Fib.calc(n - 1); } public static void main(String[] args) { for(int i = 1; i <= 40; i++) { System.out.println(i + " " + Fib.calc(i)); } System.out.println("\nJAVA"); } } - JavaScript
#!/usr/bin/env node let range = Array.from({length: 40}, (x, i) => i+1); let fib = n => n === 1 ? 0 : n === 2 ? 1 : fib(n - 2) + fib(n - 1); range.forEach( i => console.log(i, fib(i)) ); console.log("\nJavaScript"); - PHP
#!/usr/bin/env php <?php function fib(int $n) { if ($n === 1) return 0; if ($n === 2) return 1; return fib($n - 2) + fib($n - 1); } foreach (range(1, 40) as $i) { echo $i, ' ', fib($i), PHP_EOL; } echo "\nPHP\n"; - Python
#!/usr/bin/env python def fib(n): if n == 1: return 0 elif n == 2: return 1 return fib(n - 2) + fib(n - 1) if __name__ == "__main__": for i in range(1, 40 + 1): print(i, fib(i)) print("\nPYTHON") - Ruby
#!/usr/bin/env ruby def fib(n) return 0 if n == 1 return 1 if n == 2 return fib(n - 2) + fib(n - 1) end (1..40).each do |i| puts "#{i.to_s} #{fib(i).to_s}" end puts "\nRUBY"
