01:  for ( int vto = num; vto>0; vto-- ) {
02:       for ( int i = 0; i＜vto-1; i++ ) {
03:            if( vdata[i]>vdata[i+1] ) {
04:                  int temp       = vdata[i];
05:                      vdata[i]   = vdata[i+1];
06:                      vdata[i+1] = temp;
07:             }
08:        }
09:   }