fork(1) download
copy 
  1. import java.lang.*;
  2.  
  3. class Ideone {
  4. 	public static void main (String[] args) throws java.lang.Exception {
  5. 		System.out.println(PegaPrimirosDigitos(12345678, 4));
  6. 		System.out.println(PegaPrimirosDigitos(-12345678, 4));
  7. 		System.out.println(PegaPrimirosDigitos(123, 4));
  8. 		System.out.println(PegaPrimirosDigitos(-12, 4));
  9. 		System.out.println(PegaPrimirosDigitos(0, 0));
  10. 	}
  11. 	public static int PegaPrimirosDigitos(int valor, int digitos) {
  12. 		digitos = Math.max(1, digitos);
  13. 		int positivo = Math.abs(valor);
  14. 		int tamanho = (int)(Math.log10(positivo) + 1);
  15.         if(digitos > tamanho) {
  16.             return valor;
  17.         }
  18. 		return valor / (int)Math.pow(10, tamanho - digitos);
  19. 	}
  20. }
Success #stdin #stdout 0.06s 380224KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1234
-1234
123
-12
0
https://ideone.com/3x29Ce
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!