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kasama |
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#18623 追加:クラスPermutationの内容
import java.util.ArrayList; import java.util.Iterator; import java.util.List; public class Permutation { private int num = 0; private List elementList = null; private List permutationList = null; public Permutation(List elementList) { this(elementList, elementList.size()); } public Permutation(List elementList, int num) { this.num = num; this.elementList = elementList; } public List getList() { permutationList = new ArrayList(); eachCreate(new ArrayList()); return permutationList; } private void eachCreate(List indexList) { if (indexList.size() >= num) { List permutationElementList = new ArrayList(); for (int i = 0; i < indexList.size(); ++i) { Integer index = (Integer) indexList.get(i); permutationElementList.add(elementList.get(index.intValue())); } permutationList.add(permutationElementList); return; } for (int i = 0; i < elementList.size(); ++i) { Integer index = new Integer(i); if (indexList.contains(index)) continue; List newIndexList = new ArrayList(indexList); newIndexList.add(index); eachCreate(newIndexList); } } } |
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和歌山
5月15日(木) 2:11:32
MAIL:kasama@s34.co.jp 18624 |