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:

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.

AC code:

List MakeEmpty()
{
    List list = (List)malloc(sizeof(struct LNode));
    list->Last = 0;

    return list;
}
Position Find(List L, ElementType X)
{

    for (int i = 0; i < L->Last; i++)
    if (L->Data[i] == X)
        return i;
    return ERROR;
}
bool Insert(List L, ElementType X, Position P)
{


    if (L->Last==MAXSIZE) { printf("FULL"); return false; }

    if (P < 0 || P >L->Last){ printf("ILLEGAL POSITION"); return false; }
    
    

    for (int i = L->Last; i >P; i--)
        L->Data[i] = L->Data[i - 1];

    L->Data[P] = X; L->Last++;
    return true;

}
bool Delete(List L, Position P)
{

    if (P >= L->Last || P < 0){
        printf("POSITION %d EMPTY", P);
        return false;
    }
    --L->Last;
    for (int i = P; i<L->Last; i++){
        L->Data[i] = L->Data[i + 1];
    }

    return true;
}
永远渴望,大智若愚(stay hungry, stay foolish)
原文地址:https://www.cnblogs.com/h-hkai/p/9700487.html