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1   /*
2    * Copyright 2006 Christian Kalkhoff <me@ninan.info>
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package net.sf.plausj.bank.german.strategy.util;
18  
19  import net.sf.plausj.bank.german.AccountCode;
20  import net.sf.plausj.bank.german.util.MathHelper;
21  
22  /**
23   * @author ninan
24   * 
25   */
26  public class Strategy27AlikeHelper {
27  
28  	public static int calculateSum(AccountCode accountCode,
29  			int[][] transformationTable) {
30  		int sum = 0;
31  		for (int i = AccountCode.ACCOUNT_CODE_MAX_LENGTH - 2, line = 0; i >= 0; --i) {
32  			int d = accountCode.getDigitAtPos(i);
33  			sum += transformationTable[line][d];
34  			if (line != 3) {
35  				++line;
36  			} else {
37  				line = 0;
38  			}
39  		}
40  		return sum;
41  	}
42  
43  	public static int getCheckDigitFromSum(int sum) {
44  		int ld = MathHelper.getLastDigits(sum, 1);
45  		int cd = 10 - ld;
46  		return cd;
47  	}
48  
49  }