顺序表操作集

6-1 顺序表操作集

本题要求实现顺序表的操作集。

函数接口定义:

List MakeEmpty(); 
Position Find( List L, ElementType X );
bool Insert( List L, ElementType X, Position P );
bool Delete( List L, Position P );

其中List结构定义如下:

    typedef int Position;
    typedef struct LNode *List;
    struct LNode {
        ElementType Data[MAXSIZE];
        Position Last; /* 保存线性表中最后一个元素的位置 */
    };

各个操作函数的定义为:

    List MakeEmpty():创建并返回一个空的线性表;

Position Find( List L, ElementType X ):返回线性表中X的位置。若找不到则返回ERROR;

bool Insert( List L, ElementType X, Position P ):将X插入在位置P并返回true。若空间已满,则打印“FULL”并返回false;如果参数P指向非法位置,则打印“ILLEGAL POSITION”并返回false;

bool Delete( List L, Position P ):将位置P的元素删除并返回true。若参数P指向非法位置,则打印“POSITION P EMPTY”(其中P是参数值)并返回false。

裁判测试程序样例:

    #include <stdio.h>
    #include <stdlib.h>
    
    #define MAXSIZE 5
    #define ERROR -1
    typedef enum {false, true} bool;
    typedef int ElementType;
    typedef int Position;
    typedef struct LNode *List;
    struct LNode {
        ElementType Data[MAXSIZE];
        Position Last; /* 保存线性表中最后一个元素的位置 */
    };
    
    List MakeEmpty(); 
    Position Find( List L, ElementType X );
    bool Insert( List L, ElementType X, Position P );
    bool Delete( List L, Position P );
    
    int main()
    {
        List L;
        ElementType X;
        Position P;
        int N;
    
        L = MakeEmpty();
        scanf("%d", &N);
        while ( N-- ) {
            scanf("%d", &X);
            if ( Insert(L, X, 0)==false )
                printf(" Insertion Error: %d is not in.
", X);
        }
        scanf("%d", &N);
        while ( N-- ) {
            scanf("%d", &X);
            P = Find(L, X);
            if ( P == ERROR )
                printf("Finding Error: %d is not in.
", X);
            else
                printf("%d is at position %d.
", X, P);
        }
        scanf("%d", &N);
        while ( N-- ) {
            scanf("%d", &P);
            if ( Delete(L, P)==false )
                printf(" Deletion Error.
");
            if ( Insert(L, 0, P)==false )
                printf(" Insertion Error: 0 is not in.
");
        }
        return 0;
    }
    
    /* 你的代码将被嵌在这里 */

输入样例:

6
1 2 3 4 5 6
3
6 5 1
2
-1 6

输出样例:

<font  size="4">FULL Insertion Error: 6 is not in.
Finding Error: 6 is not in.
5 is at position 0.
1 is at position 4.
POSITION -1 EMPTY Deletion Error.
FULL Insertion Error: 0 is not in.
POSITION 6 EMPTY Deletion Error.
FULL Insertion Error: 0 is not in.

执行代码如下所示

    List MakeEmpty(){
        List p;
        p = (List)malloc(sizeof(struct LNode));
        p->Last = -1;
        return p;
    }
    Position Find( List L, ElementType X ){
        int i;
        for(i = 0; i <= L->Last; i++){
            if(X= =L->Data[i]){
                return i;
            }
        }
        return ERROR;
    }
    bool Insert( List L, ElementType X, Position P ){
        if(L->Last==MAXSIZE-1){
            printf("FULL");
            return false;
        }
        if(P<0||P>L->Last+1){
            printf("ILLEGAL POSITION");
            return false;
        }
        int i;
        for(i = L->Last+1; i > P; i--){
            L->Data[i] = L->Data[i-1];
        }
        L->Data[i] = X;
        L->Last++;
        return true;
    }
    bool Delete( List L, Position P ){
        int i;
        if(P<0||P>L->Last){
            printf("POSITION %d EMPTY",P);
            return false;
        }
        for(i = P; i < L->Last; i++){
            L->Data[i] = L->Data[i+1];
        }
        L->Last--;
        return true;
    }
原文地址:https://www.cnblogs.com/hxz0618/p/11439754.html