If a unique combination is found
if ( sum == K ) { System . out . print ( " { " ) ; for ( int i = 0 ; i < local . size ( ) ; i ++ ) { if ( i != 0 ) System . out . print ( " ▁ " ) ; System . out . print ( local . get ( i ) ) ; if ( i != local . size ( ) - 1 ) System . out . print ( " , ▁ " ) ; } System . out . println ( " } " ) ; return ; }