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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. System.out.println(sqrt(25));
  13. }
  14.  
  15. public static double sqrt(int number) {
  16. double t;
  17. double squareRoot = number / 2;
  18. do {
  19. t = squareRoot;
  20. squareRoot = (t + (number / t)) / 2;
  21. } while ((t - squareRoot) != 0);
  22. return squareRoot;
  23. }
  24. }
Success #stdin #stdout 0.04s 711168KB
stdin
Standard input is empty
stdout
5.0