br.com.objectos.jabuticava.Decomposicao Maven / Gradle / Ivy
/*
* Copyright 2011 Objectos, Fábrica de Software LTDA.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package br.com.objectos.jabuticava;
/**
* @author [email protected] (Marcio Endo)
*/
class Decomposicao {
private Decomposicao() {
}
public static int[] base10Inversa(long valor) {
// as per Long.MAX_VALUE 9223372036854775807L, um long na base 10 pode ter
// 19 números no máximo
return base10Inversa(valor, 19);
}
public static int[] base10Inversa(long valor, int max) {
int[] resultado = new int[max];
for (int exp = 0; exp < resultado.length; exp++) {
long valorIteracao = valor;
for (int j = 0; j < exp; j++) {
valorIteracao -= resultado[j];
}
long base = (long) Math.pow(10, exp);
valorIteracao /= base;
long resto = valorIteracao % 10;
resultado[exp] = (int) resto;
}
return resultado;
}
}