1 package interview; 2  3 import java.util.LinkedList; 4 import java.util.List; 5  6 public class ABCDE { 7  8     private boolean ab(boolean a, boolean b){ 9         if(a && !b) return false;10         return true;11     }12     13     private boolean bc(boolean b, boolean c){14         if(b && c) return false;15         if(!b && !c) return false;16         return true;17     }18     19     private boolean cd(boolean c, boolean d){20         if(c && !d) return false;21         if(!c && d) return false;22         return true;23     }24     25     private boolean de(boolean d, boolean e){26         if(!d && !e) return false;27         return true;28     }29     30     private boolean ead(boolean e, boolean a, boolean d){31         if(e){32             if(!a) return false;33             if(!d) return false;34         }35         return true;36     }37     38     public boolean trueCondition(boolean a, boolean b, boolean c, boolean d, boolean e){39         if(ab(a, b) && bc(b, c) && cd(c, d) && de(d, e) && ead(e, a, d)) return true;40         return false;41     }42     43     public boolean trueCondition(List<Boolean> booleans){44         boolean a, b, c, d, e;45         a = booleans.get(0);46         b = booleans.get(1);47         c = booleans.get(2);48         d = booleans.get(3);49         e = booleans.get(4);50         return trueCondition(a, b, c, d, e);51     }52     53     public static List<Boolean> intToBooleanBit(int aInt, int size) {54         if (aInt < 0) throw new IllegalArgumentException();55         String bitString = "00000" + Integer.toBinaryString(aInt);56         bitString = bitString.substring(bitString.length() - size);57         List<Boolean> booleanList = new LinkedList<Boolean>();58         for (int i = 0; i < bitString.length(); i++) {59             booleanList.add(new Boolean(bitString.charAt(i) == ‘0‘ ? false : true));60         }61         return booleanList;62     }63     64     public static void main(String[] args){65         ABCDE instance = new ABCDE();66         int pass = 32;67         int size = 5;68         for(int i=0; i<pass; i++){69             List<Boolean> booleanList = intToBooleanBit(i, 5);70             if(booleanList.size() != 5){71                 System.out.println("bit list size error!");72                 System.exit(-1);73             }else{74                 if(instance.trueCondition(booleanList)){75                     System.out.println(booleanList.toString());76                 }77             }78         }79     }80 }