Digitos.java

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package digitos;

/**
 *
 * @author Marvin Ferreira
 * Cógido para obter dígitos de números inteiros.
 */
public class Digitos {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        //obterDigitoV1();
        //obterDigitoV2();
        obterDigitoV3(5432,0);
        obterDigitoV3(5432,1);
        obterDigitoV3(5432,2);
        obterDigitoV3(5432  ,3);
    }
    
    public static void obterDigitoV1(){
        int n = 2450;
        while (n>0){
            int d = n / 10;
            int k = n - d * 10;
            n = d;
            System.out.println(k + " ");
        }
    }
    
    public static void obterDigitoV2(){
        int num_1 = 2450;
        while (num_1> 0){
            int digit = num_1%10;
            num_1 = num_1/10;
            System.out.println(digit);
        }        
    }
    
    public static void obterDigitoV3(int valor, int digito){
        Double potencia = Math.pow(10,digito);        
        int resultado = valor / potencia.intValue() % 10;
        System.out.println(resultado);
    }
}