???? (Linked List)

1

• ???? (Linked List)
• ?????(Pointer)

???????
2
??????

• ????(linked list)??????????,??????????????????????
  ????,?????????????????????
• ?????????????????,??????
• ??????????(?????),???????????????????

?????? ????????
????? ????????? ????????
???? ????????????? ????????????
????? ?????????? ?????????
???????? ?????????,???????????? ?????????,????????????
3
??(Node)

• ?? (Node)???????????
• ?? (Node) ?????????????
• ?????????
• ???????????????????

4
Node??????

• ????
• struct node
• int number
• struct node llink
• Node ???
• head (struct node ) malloc (sizeof(struct
  node))

5
Node??????(?)

• ????
• struct node
• string name
• string address
• int phone
• struct node llink
• Node ???
• head (struct node ) malloc (sizeof(struct
  node))

6
Example

• ???????????(node)????????,?????(data)????(next)?,?
  ??????
• Struct node
• int data
• struct node next
• ???????a, b, c, d, x???????
• head??????????
• tail??????????

tail
head
a b c d x
7
??????

• ???? (Linked List) ??????????,???????????????????
• ????,????????????? (Data) ??? (Link)?
• ?????????
• ??????????????????????,?????????????
• ??,????????,???????????
• ?????????-??????,????????????,???????????
• ???????????????????
• ???????????,???????????????,?????????????
• ???????????????,????????????????????,?????????

8
??????(?)

1. ??(a)??,pHead(??????????),??4????
2. ??????????,???????????????????
3. ?????????????null??,????????
4. ?????????null??,????????????,??(b) ???

9
????????

• ?????????????????? ??,??????????????
• ???????,?????????? ???
• ???????????????,????????,?????????
• ????????????????? (Head Pointer)
  ?????,pHead?? head??,?link??????????

10
??????

• ???
• ??????(single linked list)
• ????(circular linked list)
• ??????(doubly linked list)

11
????????

1. ??????????,????(insert)???(delete)????(node)?????
   ??
2. ???????a,b,d,e????,??c?????,?????????
3. ????d,e????,???c????????,??????????????,?????????
   ????
4. ??????????????(linked list)?

12
??????(?)

1. ????????????????????,????????(pointer)?????????
2. ???????????(node)????????,?????(data)????(next)?
   ,?????????struct node ??,?????

13
??????(?)

• ??? Aa, b, c, d,???????
• head?????????,????????data??????????,?????????
  ?????

14
??????(????????)

• ????????
• ????x?????????,?????

(1) x(struct node) malloc(sizeof(struct
node)) (2) x-gtnexthead-gtnext
15
??????(????????)

• (3)head-gtnextx

16
??????(????????)

• ????????
• ????x????????,?????

(1)x(struct node ) malloc(sizeof(struct
node))
17
??????(????????)

• (2)x-gtnextNULL

18
??????(????????)

• ???????????????,?????????
• ??????????

19
??????(????????)

• (3)p-gtnextx

20
??????(??????????????)

• ??????????,?data??????????

21
??????(??????????????)

• ?????ptr?data????75,????????????????????????,??
  ??75????80?70??,??????????????

22
??????(??????????????)

• ??prev?current???????,prev????current????

23
??????(??????????????)

• ?????????ptr??????prev???
• ptr-gtnextcurrent / ? /
• prev-gtnextptr / ? /

?
?
24
??????(??????)

• ????????
• ???????????
• phead-gtnext
• head-gtnextp-gtnext
• free(p)

25
??????(??????)

• (1) phead-gtnext

26
??????(??????)

• (2) head-gtnextp-gtnext

27
??????(??????)

• (3)free(p)
• ??free(p)???p?????

28
??????(?????????)

• ????????
• ?????????????????????,????

29
??????(?????????)
30
??????(?????????)
31
??????(?????????)

• ??????????????????current?prev,???????????(cu
  rrent)?????(prev),??prev????current?

32
??????(?????????)

• ????????????
• ????Mary???del_data?????Mary,??????????????
  current????Mary???,?prev??John??,??current????
  ????

33
??????(?????????)
?
34
??????(????????????)

• ?????????
• ?x?y?????z??,?????

35
??????(????????????)
36
??????(????????????)
37
??????(????????????)
38
??????(??????)

• ????,?????(invert)?????????????,??,???????????
  ???????????,??????????,??????????

39
??????(??????)

• ????????
• ?????????????????

40
??????(??????)
41
??????(??????)
42
??????(??????)

• ??????????p??,current???prev????????????????,??
  ??

43
??????(??????)

• ?????p NULL?,????

44
??????(??????)

• ??,??
• head-gtnextcurrent
• ??????????????????????????????

45
??????(???????)

• ???????????????,???????????????

46
??????(???????)

• ???????????????? (p ! NULL) ????count???????
• ??head?????????,????????

47
????

• ??????????????????head???,?????????(circular
  list),?????
• ?????????????????????????????x1?

48
????(????????)

• ????????

49
????(????????)

• ??malloc?????????
• ?????????x????????????????

50
????(????????)
51
????(????????)
52
????(????????)
53
????(????????)
3. ??????????????????,???????????
54
????(???????)

• ?????????
• ????????????????

55
????(???????)
?
?
56
????(???????)

• ??p??????,?????????????

57
????(???????)

• ????????
• ?????????????????

58
????(???????)
59
????(???????)
?
60
????(??????)

• ????????????????????,???
• ????

61
????(?????????)

• ?????????,????????????????????

62
??????

• ??????(doubly linked list)?????????????,?????(L
  LINK),????(DATA),?????(RLINK),???????

63
??????

• ??LLINK??????,?RLINK????????????????????????,??
  ?????????????????

64
??????

• ??????????????
• 1.??ptr??????????,?
• ptr ptr-gtllink-gtrlink
  ptr-gtrlink-gtllink
• 2.?????????????,??
• ???????

65
??????(???????)

• ?????????????
• ???????????????x ??????

66
??????(???????)
?
?
?
67
??????(???????)
?
?
68
??????(???????)

• ????????????
• ???????????????x ???????

69
??????(???????)
?
70
??????(???????)
?
?
71
??????(???????)

• ??(2), (3)????????

?
?
72
??????(?????????)

• ????????????,???
• ?????????,???????
• ??????????(?????
• ?)

73
??????(?????????)
74
??????(?????????)
75
??????(?????????)
76
??????(???????)

• ???????????,????

?
?
?

?
77
??????(???????)
?
?
78
??????(???????)
79
??????(???????)

• ?????????

?
?
80
??????(???????)
?
81
??????(???????)
82
??????(?????????)

• ????del_dat?cd,???????

83
??????(?????????)
?
?
84
??????(?????????)
85
???????

• ?????????
• ?????????????????,??,?????????????????????,??????
  ?????????????????????
• ?????????
• ???????????????,????????????????????,??????????
  ???

86
???????(?????)

• ??????????????????????????????,???????
• COEF???????,EXP???????,?LINK???????????

87
???????(?????)

1. ??????? A3x142x81,???????
2. ???????????????

88
???????(?????)
89
???????(?????)

• 1. ??A?B??????????EXP
• ???(EXP(p) EXP(q)),???
• ????C??,??p?q????
• ???????

90
???????(?????)
91
???????(?????)

• 2. EXP(p)8ltEXP(q)10????B?
• ??????????C???,?
• ?q??????????

92
???????(?????)
93
???????(?????)

• 3. ??EXP(p)8gtEXP(q)6,???A
• ???????????C???,p
• ??????????

94
???????(?????)
95
???????(?????)

• 4. ??????C????
• C11x14-3x102x810x61