question: public static List < String > splitAtLastBlank ( String s , int width ) { List < String > chunks = new ArrayList < > ( ) ; String tmp = s ; while ( tmp . length ( ) > 0 ) { int index = findSplitpoint ( tmp , width ) ; chunks . add ( tmp . substring ( 0 , index ) ) ; while ( index < tmp . length ( ) && tmp . charAt ( index ) == ' ' ) { index += 1 ; } if ( index < tmp . length ( ) && tmp . regionMatches ( index , NEWLINE , 0 , NEWLINE . length ( ) ) ) { index += NEWLINE . length ( ) ; } if ( index >= tmp . length ( ) ) { break ; } tmp = tmp . substring ( index ) ; } return chunks ; }
target:  Splits the specified string at the last blank before width. If there is no blank before the given width, it is split at the next.