

 

       (), 
     ,  -
 ,     .    
,      .   -
     ,   -
      .    
     ,     
    .     
     ,      
    (next).      -
      .  
   . A.I.

	next			next	  	next	NULL

         ,
     (prev).     (doubly link-
ed),      ,   .  , 
,    . A.I,   {singly linked). 
   . .2.

NULL	prev		next	prev	. . .	next	prev	  	next	NULL

Puc. A. 2.  