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栈是插入和删除操作限制在一端(即栈顶)的表,是先进后出模型。
入栈:新元素的插入,成为新的栈顶元素;
出栈:栈顶元素的删除,栈顶指向相邻元素。
数制转换
括号匹配的检验
表达式求值
迷宫求解
行编辑程序
二叉树的遍历
1. fata.h
#include <stdio.h> #include <stdlib.h> #define Error( Str ) FatalError( Str ) #define FatalError( Str ) fprintf( stderr, "%s\n", Str ),system("puase"),getchar(),exit( 1 )
2. stacklist.h
#ifndef _Stack_h typedef int ElementType; struct Node; typedef struct Node *PtrToNode; typedef PtrToNode Stack; int IsEmpty(Stack S); Stack CreateStack(void); void DisposeStack(Stack S); void MakeEmpty(Stack S); void Push(ElementType X, Stack S); ElementType Top(Stack S); void Pop(Stack S); #endif
3. stack.h
#include "stack.h" #include "fatal.h" #include <stdio.h> struct Node { ElementType Element; PtrToNode Next; }; int IsEmpty(Stack S) { return S->Next == NULL; } void Push(ElementType X, Stack S) { PtrToNode TmpCell; TmpCell = malloc(sizeof(struct Node)); if (TmpCell == NULL) { Error("out of space!!!"); } else { TmpCell->Element = X; TmpCell->Next = S->Next; S->Next = TmpCell; } } void Pop(Stack S) { PtrToNode FirstCell; if (IsEmpty(S)) { Error("Empty Stack\n"); } else { FirstCell = S->Next; S->Next = S->Next->Next; free(FirstCell); } } void MakeEmpty(Stack S) { if (S == NULL) { Error("Use CreatStack first\n"); } else while (!IsEmpty(S)) { Pop(S); } } Stack CreateStack(void) { Stack S; S = malloc(sizeof(struct Node)); if (S == NULL) { FatalError("out of Space"); } S->Next = NULL; MakeEmpty(S); return S; } ElementType Top(Stack S) { if (!IsEmpty(S)) { return S->Next->Element; } Error("Empty Stack\n"); return 0; } void DisposeStack(Stack S) { MakeEmpty(S);//only head free(S);//free head }
4. teststack.h
#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> //#include <Windows.h> #include <string.h> #include "stack.h" #include "fatal.h" main() { Stack S; int i; S = CreateStack(); for (i = 0; i < 10; i++) Push(i, S); while (!IsEmpty(S)) { printf("%d\n", Top(S)); Pop(S); } DisposeStack(S); system("pause"); return 0; }
1. stackarr.h
#include "fatal.h" #include <stdio.h> #define ElementType int #ifndef _Stackarr_H struct StackRecord; typedef struct StackRecord *Stack; int IsEmpty(Stack S); int IsFull(Stack S); Stack CreateStack(int MaxElement); void DisposeStack(Stack S); void MakeEmpty(Stack S); void Push(ElementType X, Stack S); ElementType Top(Stack S); void Pop(Stack S); ElementType TopAndPop(Stack S); #endif
2. stackarr.c
#include "stackarr.h" #include "fatal.h" #include <stdio.h> #define MinStackSize (10) #define EmptyToS (-1) struct StackRecord { int Capacity; int TopOfStack; ElementType *Array; }; Stack CreateStack(int MaxElement) { Stack S; if (MaxElement <MinStackSize) { Error("Stack Size is too small."); } S = malloc(sizeof(struct StackRecord)); if (S == NULL) { FatalError("out of space!!!"); } S->Array = malloc(sizeof(ElementType)*MaxElement); if (S->Array == NULL) { FatalError("out of space!!!"); } S->Capacity = MaxElement; MakeEmpty(S); return S; } void DisposeStack(Stack S) { if (S!=NULL) { free(S->Array); free(S); } } int IsEmpty(Stack S) { return S->TopOfStack == EmptyToS; } int IsFull(Stack S) { return S->TopOfStack == S->Capacity - 1; } void MakeEmpty(Stack S) { S->TopOfStack = EmptyToS; } void Push(ElementType X, Stack S) { if (IsFull(S)) { Error("Full Stack\n"); } else S->Array[++S->TopOfStack] = X; } ElementType Top(Stack S) { if (!IsEmpty(S)) return S->Array[S->TopOfStack]; Error("Empty Stack\n"); return 0; } void Pop(Stack S) { if (IsEmpty(S)) { Error("Empty stack\n"); } else S->TopOfStack--; } ElementType TopAndPop(Stack S) { if (!IsEmpty(S)) { return S->Array[S->TopOfStack--]; } Error("Empty stack\n"); return 0; }
3. teststarkarr.c
#include <stdio.h> #include "stackarr.h" #include "fatal.h" void main() { Stack S; int i; S = CreateStack(11); for (i = 0; i <= 10; i++) Push(i, S); while (!IsEmpty(S)) { printf("%d\n", Top(S)); Pop(S); } DisposeStack(S); system("pause"); }
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原文地址:http://www.cnblogs.com/my-cat/p/5970859.html