自定义排序返回值为1时，无效果

   var arr = ["国","处","科","处","科","处","科","部","国","司","处","部","国","部","司","处","司","处","司","处","科"];

   function arrSort(a,b){

    if( (a=="国" && ( b=="部" || b=="司" || b=="处" ||  b=="科")) ||

    (a=='部' && ( b=='司' || b=='处' ||  b=='科') ) ||

    (a=='司' && ( b=='处' ||  b=='科')) ||

    (a=='处' &&  b=='科' ) ){

    return -1;

    }

    if(a == b){

    return 0;

    }

   }

   document.write(arr.sort(arrSort));