question: public String writeLongToString ( ) { StringBuilder builder = new StringBuilder ( ) ; for ( int i = 0 ; i < ( bitSet . getBits ( ) . length ) ; ++ i ) { builder . append ( Long . toString ( bitSet . getBits ( ) [ i ] ) + "|" ) ; } return builder . toString ( ) ; }
target:  Writes vector to a string of the form 010 etc. (no delimiters).  No terminating newline or delimiter.