數據結構——棧操做的實現(順序棧&鏈棧)

順序棧

 

  1 #include <stdio.h>
  2 #include <malloc.h>
  3 
  4 #define OK 1
  5 #define ERROR 0
  6 #define INFEASIBLE -1
  7 #define OVERFLOW -2
  8 #define TRUE 1
  9 #define FALSE 0
 10 #define STACK_INIT_SIZE 100
 11 #define STACKINCREMENT 10
 12 
 13 typedef int Status;
 14 
 15 typedef struct{
 16 int *base;
 17 int *top;
 18 int stacksize;
 19 }SqStack;
 20 
 21 Status InitStack(SqStack &S);
 22 Status ClearStack(SqStack &S);
 23 Status DestoryStack(SqStack &S);
 24 bool StackEmpty(SqStack S);
 25 int StackLength(SqStack S);
 26 Status GetTop(SqStack S, int &e);
 27 Status Push(SqStack &S, int e);
 28 Status Pop(SqStack &S, int &e);
 29 Status StackTraverse(SqStack S, Status (*visit)(int));
 30 Status visit(int e);
 31 
 32 int main()
 33 {
 34     int i, e;
 35     SqStack S;
 36     printf("初始化\n");
 37     InitStack(S);
 38     printf("壓棧:\n");
 39     for (i = 0; i < 5; i++)
 40     {
 41         printf("輸入e:");
 42         scanf("%d", &e);
 43         Push(S, e);
 44     }
 45     printf("彈棧:");
 46     Pop(S, e);
 47     printf("%d\n", e);
 48     printf("棧長:%d\n", StackLength(S));
 49     printf("取棧頂元素:");
 50     GetTop(S, e);
 51     printf("%d\n", e);
 52     printf("遍歷棧:\n");
 53     StackTraverse(S, visit);
 54     printf("置爲空棧\n");
 55     ClearStack(S);
 56     printf("是否爲空棧:%d\n", StackEmpty(S));
 57     printf("銷燬棧:\n");
 58     DestoryStack(S);
 59     return 0;
 60 }
 61 //初始化棧
 62 Status InitStack(SqStack &S)
 63 {
 64     S.base = (int*)malloc(STACK_INIT_SIZE * sizeof(int));
 65     if (!S.base)
 66         exit(OVERFLOW);
 67     S.top = S.base;
 68     S.stacksize = STACK_INIT_SIZE;
 69     return OK;
 70 }
 71 //置爲空棧
 72 Status ClearStack(SqStack &S)
 73 {
 74     S.top = S.base;
 75     return OK;
 76 }
 77 //銷燬棧
 78 Status DestoryStack(SqStack &S)
 79 {
 80     free(S.base);
 81     S.base = NULL;
 82     S.top = NULL;
 83     S.stacksize = 0;
 84     return OK;
 85 }
 86 //是不是空棧
 87 bool StackEmpty(SqStack S)
 88 {
 89     return S.top == S.base;
 90 }
 91 //棧長
 92 int StackLength(SqStack S)
 93 {
 94     return S.top - S.base;
 95 }
 96 //取棧頂元素
 97 Status GetTop(SqStack S, int &e)
 98 {
 99     if (S.top == S.base)
100     {
101         return ERROR;
102     }
103     e = *(S.top - 1);
104     return OK;
105 }
106 //壓棧
107 Status Push(SqStack &S, int e)
108 {
109     if (S.top - S.base >= S.stacksize)
110     {
111         S.base = (int*)realloc(S.base, (S.stacksize + STACKINCREMENT) * sizeof(int));
112         if (!S.base)
113         {
114             return OVERFLOW;
115         }
116         S.top = S.base + S.stacksize;
117         S.stacksize += STACKINCREMENT;
118     }
119     *S.top = e;
120     S.top ++;
121     return OK;
122 }
123 //彈棧
124 Status Pop(SqStack &S, int &e)
125 {
126     if (S.top == S.base)
127     {
128         return ERROR;
129     }
130     e = *(S.top - 1);
131     S.top--;
132     return OK;
133 }
134 //遍歷棧
135 Status StackTraverse(SqStack S, Status (* visit)(int))
136 {
137     while (S.top > S.base)
138     {
139         visit(*S.base);
140         S.base++;
141     }
142     return OK;
143 }
144 
145 Status visit(int e)
146 {
147     printf("%d\n", e);
148     return OK;
149 }

 

 鏈棧

 

  1 #include <stdio.h>
  2 #include <malloc.h>
  3 
  4 #define TRUE 1
  5 #define FALSE 0
  6 #define OK 1
  7 #define ERROR 0
  8 #define INFEASIBLE -1
  9 #define OVERFLOW -2
 10 
 11 typedef int Status;
 12 
 13 typedef struct StackNode{
 14 int data;
 15 struct StackNode *next;
 16 }StackNode;
 17 
 18 typedef struct LinkStack{
 19 StackNode *top;
 20 int stacksize;
 21 }LinkStack;
 22 
 23 Status InitLinkStack(LinkStack &L);
 24 Status ClearLinkStack(LinkStack &L);
 25 bool LinkStackEmpty(LinkStack L);
 26 Status Push(LinkStack &L, int e);
 27 Status Pop(LinkStack &L, int &e);
 28 Status LinkStackTraverse(LinkStack L, Status (*visit)(int));
 29 Status visit(int e);
 30 
 31 int main()
 32 {
 33     int i, e;
 34     LinkStack L;
 35     printf("初始化\n");
 36     InitLinkStack(L);
 37     printf("壓棧:\n");
 38     for (i = 0; i < 5; i++)
 39     {
 40         printf("輸入e:");
 41         scanf("%d", &e);
 42         Push(L, e);
 43     }
 44     printf("遍歷棧:\n");
 45     LinkStackTraverse(L, visit);
 46     printf("彈棧:");
 47     Pop(L, e);
 48     printf("%d\n", e);
 49     printf("遍歷棧:\n");
 50     LinkStackTraverse(L, visit);
 51     printf("置爲空棧\n");
 52     ClearLinkStack(L);
 53     printf("是否爲空棧:%d\n", LinkStackEmpty(L));
 54     return 0;
 55 }
 56 //初始化鏈棧
 57 Status InitLinkStack(LinkStack &L)
 58 {
 59     L.stacksize = 0;
 60     L.top = NULL;
 61     return OK;
 62 }
 63 //置爲空棧
 64 Status ClearLinkStack(LinkStack &L)
 65 {
 66     StackNode *p;
 67     while (L.top)
 68     {
 69         p = L.top->next;
 70         free(L.top);
 71         L.top = p;
 72     }
 73     L.stacksize = 0;
 74     return OK;
 75 }
 76 //是否爲空棧
 77 bool LinkStackEmpty(LinkStack L)
 78 {
 79     return L.top == NULL;
 80 }
 81 //壓棧
 82 Status Push(LinkStack &L, int e)
 83 {
 84     StackNode *p;
 85     p = (StackNode*)malloc(sizeof(StackNode));
 86     if (!p)
 87     {
 88         exit(OVERFLOW);
 89     }
 90     p->data = e;
 91     p->next = L.top;
 92     L.top = p;
 93     L.stacksize++;
 94     return OK;
 95 }
 96 //彈棧
 97 Status Pop(LinkStack &L, int &e)
 98 {
 99     StackNode *p;
100     if (LinkStackEmpty(L))
101     {
102         return ERROR;
103     }
104     e = L.top->data;
105     p = L.top->next;
106     free(L.top);
107     L.top = p;
108     L.stacksize--;
109     return OK;
110 }
111 //遍歷棧
112 Status LinkStackTraverse(LinkStack L, Status (*visit)(int))
113 {
114     if (LinkStackEmpty(L))
115     {
116         return ERROR;
117     }
118     while (L.top)
119     {
120         visit(L.top->data);
121         L.top = L.top->next;
122     }
123     return OK;
124 }
125 
126 Status visit(int e)
127 {
128     printf("%d\n", e);
129     return OK;
130 }