"Java Programming Idea-practice" vampire numbers

Thinking in Java

This program I knock out the code, with the method is very stupid feeling, will be, there is no time to think so much, have to continue to learn AH.

1 classvnum{2      Public Static voidMain (String args[]) {3Checkvampire Cvampire =NewCheckvampire ();4          for(inti=1000;i<10000;i++){5             if(Cvampire.isvampire (i)) {6 System.out.println (i);7             }8         }9     }Ten  One     Static classcheckvampire{ A         //split num into each one, saved in numarr[] -         voidEverybit (intNumintnumarr[]) { -             if((1000>num) | | (10000<num)) { theNumarr[0]=numarr[1]=numarr[2]=numarr[3]=0; -                 return; -}Else if(num%100==0){ -Numarr[0]=numarr[1]=numarr[2]=numarr[3]=0; +                 return; -}Else{ +numarr[3]=num/1000; Anumarr[2]=num%1000/100; atNumarr[1]=num%100/10; -Numarr[0]=num%10; -             } -         } -         //enter a num and the return value is true if the num is a vampire number -         //because it is to detect the vampire numbers within 1000~9999, then use the exhaustive method = =, there should be a better way online in         BooleanIsvampire (intnum) { -             intnumeverybit[]=New int[4]; to everybit (num,numeverybit); +             if(num== (numeverybit[0]*10+numeverybit[1]) * (numeverybit[2]*10+numeverybit[3])){ -                 return true; the             } *             Else if(num== (numeverybit[0]*10+numeverybit[1]) * (numeverybit[3]*10+numeverybit[2])){ $                 return true;Panax Notoginseng             } -             Else if(num== (Numeverybit[1]*10+numeverybit[0]) * (numeverybit[2]*10+numeverybit[3])){ the                 return true; +             } A             Else if(num== (Numeverybit[1]*10+numeverybit[0]) * (numeverybit[3]*10+numeverybit[2])){ the                 return true; +             } -  $             Else if(num== (numeverybit[0]*10+numeverybit[2]) * (numeverybit[1]*10+numeverybit[3])){ $                 return true; -             } -             Else if(num== (numeverybit[0]*10+numeverybit[2]) * (numeverybit[3]*10+numeverybit[1])){ the                 return true; -             }Wuyi             Else if(num== (Numeverybit[2]*10+numeverybit[0]) * (numeverybit[1]*10+numeverybit[3])){ the                 return true; -             } Wu             Else if(num== (Numeverybit[2]*10+numeverybit[0]) * (numeverybit[3]*10+numeverybit[1])){ -                 return true; About             } $  -             Else if(num== (Numeverybit[0]*10+numeverybit[3]) * (numeverybit[1]*10+numeverybit[2])){ -                 return true; -             } A             Else if(num== (Numeverybit[0]*10+numeverybit[3]) * (numeverybit[2]*10+numeverybit[1])){ +                 return true; the             } -             Else if(num== (Numeverybit[3]*10+numeverybit[0]) * (numeverybit[1]*10+numeverybit[2])){ $                 return true; the             } the             Else if(num== (Numeverybit[3]*10+numeverybit[0]) * (numeverybit[2]*10+numeverybit[1])){ the                 return true; the             } -             Else{ in                 return false; the             } the         } About     } the}