Logik und Logische Programmierung Einführung

Permutator.javapackage de.jastram.truthtable;import java.util.Iterator;/** * AnIterator that provides permutations for n boolean values, where n isthe * argument to the constructor. The results are provided as booleanarrays. */public class Permutator implements Iterator {!private int length; !private int counter = 0;!publicPermutator(intnumFields){ !!if(numFields>31)! ! !throw new IndexOutOfBoundsException("Too many variables!"); ! !this.length =numFields; !} !public boolean hasNext() { !!return counter < (Math.pow(2, length)); !}!public boolean[] next() { ! !boolean[]bits = new boolean[length]; ! !for (int i = 0; i >i; ! ! !bits[i] = (shift % 2 == 1);! !} ! !counter++; !!return bits; !} !public void remove() {! !throw new UnsupportedOperationException();!}}!