简单顺序表的插入，删除，指定位置，指定元素的插入删除操作

头文件 SeqList.h

#ifndef __SEQLIST_H__

#define __SEQLIST_H__
#include<stdio.h>
#include<string.h>
#include<assert.h>

#define MAX_SIZE 10
typedef int DataType;
typedef unsigned int size_t;

typedef struct SeqList
{
    DataType array[MAX_SIZE];
    size_t size;
}SeqList, *PSeqList;

// 初始化顺序表
void InitSeqList(PSeqList seqList);

// 顺序表尾插
// 设计函数原型
// 参数检测
// 边界条件考虑
// 逻辑操作

// 尾插
void PushBack(PSeqList pSeqList, DataType data);
// 尾删
void PopBack(PSeqList pSeqList);

// 打印顺序表
void PrintSeqList(PSeqList pSeqList);

// 头插
void PushFront(PSeqList pSeqList, DataType data);

// 头删
void PopFront(PSeqList pSeqList);

// 任意位置插入
void Insert(PSeqList pSeqList, size_t pos, DataType data);

// 在顺序表中查找元素data
int Find(PSeqList pSeqList, DataType data);

// 删除顺序表中pos位置上的元素
void Erase(PSeqList pSeqList, size_t pos);

//移除顺序表中的元素data
void Remove(PSeqList pSeqList, DataType data);

// 移除顺序表中所有元素data
void RemoveAll(PSeqList pSeqList, DataType data);

#endif

实现函数 SeqList.c

#include "SeqList.h"

void InitSeqList(PSeqList seqList)// 初始化顺序表
{
    memset(seqList->array, 0, MAX_SIZE*sizeof(DataType));
    seqList->size = 0;
}

// 打印顺序表
void PrintSeqList(PSeqList pSeqList)
{
    size_t i = 0;
    if (pSeqList->size == 0)
    {
        printf("线性表为空,打印结束\n");
        return;
    }
    for (i = 0; i < pSeqList->size; i++)
    {
        printf("%d  ", pSeqList->array[i]);
    }
    printf("\n");
}

void PushBack(PSeqList pSeqList, DataType data)//从尾部插入
{
    assert(pSeqList);//判断指针是否为空
    if ((pSeqList->size) >= MAX_SIZE)
    {
        printf("线性表已满，无法继续插入\n");
        return;
    }
    pSeqList->array[pSeqList->size] = data;
    pSeqList->size++;

}

void PopBack(PSeqList pSeqList)//从尾部删除
{
    assert(pSeqList);
    if (pSeqList->size == 0)
    {
        printf("线性表为空\n");
        return;
    }
    pSeqList->size--;
    printf("删除成功\n");
}

void PushFront(PSeqList pSeqList, DataType data)//从首部插入
{
    size_t i = pSeqList->size;
    assert(pSeqList);//判断指针是否为空
    if ((pSeqList->size) >= MAX_SIZE)
    {
        printf("线性表已满，无法继续插入\n");
        return;
    }
    while (i)
    {
        pSeqList->array[ i ] = pSeqList->array[i-1];
        i--;
    }
    pSeqList->array[0] = data;
    printf("插入完成\n");
    pSeqList->size++;
}

void PopFront(PSeqList pSeqList)//删除最前面一个
{
    size_t i = 0;
    assert(pSeqList);//判断指针是否为空
    if (pSeqList->size == 0)
    {
        printf("线性表为空\n");
        return;
    }
    for (i = 0; i < pSeqList->size-1; i++)
    {
        pSeqList->array[i] = pSeqList->array[i + 1];
    }
    pSeqList->size--;
    printf("删除完成\n");
}

int Find(PSeqList pSeqList, DataType data)//在顺序表内查找某元素
{
    size_t i = 0;
    assert(pSeqList);//判断指针是否为空
    if (pSeqList->size == 0)
    {
        printf("线性表为空\n");
        return -1;
    }
    for (i = 0; i < pSeqList->size - 1; i++)
    {
        if (pSeqList->array[i] == data)
        {
            return i;
        }
    }
    return -1;
}

void Insert(PSeqList pSeqList, size_t pos, DataType data)//在任意位置插入元素
{
    size_t i = pSeqList->size;
    assert(pSeqList);//判断指针是否为空
    if ((pSeqList->size) >= MAX_SIZE)
    {
        printf("线性表已满，无法继续插入\n");
        return;
    }
    if (pos > pSeqList->size)
    {
        printf("插入位置不被允许\n");
        return;
    }
    for (i = pSeqList->size; i >pos; i--)
    {
        pSeqList->array[i] = pSeqList->array[i - 1];

    }
    pSeqList->array[pos] = data;
    pSeqList->size++;
    printf("添加完成\n");
}

// 删除顺序表中pos位置上的元素
void Erase(PSeqList pSeqList, size_t pos)
{
    size_t i = pos;
    assert(pSeqList);//判断指针是否为空
    if (pSeqList->size == 0)
    {
        printf("线性表为空\n");
        return;
    }
    if (pos > pSeqList->size)
    {
        printf("删除位置有误\n");
        return;
    }

    for (i = pos; i < pSeqList->size-1; i++)
    {
        pSeqList->array[i] = pSeqList->array[i + 1];
    }
    pSeqList->size--;
    printf("删除完成\n");
}

void RemoveAll(PSeqList pSeqList, DataType data)
{
    size_t i = 0;
    assert(pSeqList);//判断指针是否为空
    if (pSeqList->size == 0)
    {
        printf("线性表为空\n");
        return;
    }
    for (i = 0; i < pSeqList->size; i++)
    {
        if (pSeqList->array[i] == data)
        {
            size_t j = i;
            while (j< pSeqList->size-1)
            {
                pSeqList->array[j] = pSeqList->array[j + 1];
                j++;
            }
            pSeqList->size--;
            printf("已删除一个元素\n");
            i--;
        }
    }
    printf("删除完成\n");
}

void Remove(PSeqList pSeqList, DataType data)
{
    size_t i = 0;
    assert(pSeqList);//判断指针是否为空
    i = Find(pSeqList, data);
    if (i >= 0)
    {
        while (i < pSeqList->size - 1)
        {
            pSeqList->array[i] = pSeqList->array[i + 1];
            i++;
        }
        pSeqList->size--;
        printf("删除完成\n");
        return;
    }
    else
    {
        printf("没有找到该元素");
        return;
    }
}

测试程序 test.c （可分三次测试）

#include "SeqList.h"

static void test1(PSeqList seqList)
{

    InitSeqList(seqList);
    PushBack(seqList, 1);
    PushBack(seqList, 2);
    PushBack(seqList, 3);
    PushBack(seqList, 4);
    PrintSeqList(seqList);
    PopBack(seqList);
    PrintSeqList(seqList);
}

static void test2(PSeqList seqList)
//测试PushFront ，PrintSeqList，PopFront等函数
{
    int ret = 0;
    InitSeqList(seqList);
    PushFront(seqList, 1);
    PushFront(seqList, 2);
    PushFront(seqList, 3);
    PushFront(seqList, 4);
    PrintSeqList(seqList);
    PopFront(seqList);
    PopFront(seqList);
    PopFront(seqList);
    PopFront(seqList);
    PopFront(seqList);
    PrintSeqList(seqList);
}

static void test3(PSeqList seqList)//测试Insert,Erase,Remove,RemoveALL函数
{
    int ret = 0;
    InitSeqList(seqList);
    PushFront(seqList, 1);//在首部加入 1
    PushFront(seqList, 2);
    PushFront(seqList, 3);
    PushFront(seqList, 4);
    Insert(seqList, 3, 5);//在下标3的位置插入 5
    PrintSeqList(seqList);
    Erase(seqList, 3);//删除下标3位置上的元素
    PrintSeqList(seqList);
    Insert(seqList, 3, 2);
    Insert(seqList, 3, 2);
    PrintSeqList(seqList);
    Remove(seqList, 2);//删除第一个 2
    PrintSeqList(seqList);
    RemoveAll(seqList, 2);//删除所有的 2
    PrintSeqList(seqList);
}
static void test4(PSeqList seqList)//测试Find函数
{
    int ret = 0;
    InitSeqList(seqList);
    PushFront(seqList, 1);
    PushFront(seqList, 2);
    PushFront(seqList, 3);
    PushFront(seqList, 4);
    ret = Find(seqList, 2);
    printf("%d", ret);
}

int main()
{
    SeqList seqList;
    /*test1(&seqList);*/
    /*test2(&seqList);*/
    test3(&seqList);
    /*test4(&seqList);*/

    system("pause");
    return 0;
}