C语言描述顺序表

Sasura_321 2017-12-01 12:01:34

//有一个顺序表L，假设元素类型ElemType为整数
//设计一个尽可能高级的算法，将所有奇数移到偶数的前面

#include <stdio.h>
#define MAXSIZE 100

typedef int ElemType;
typedef struct
{
ElemType data[MAXSIZE];
int length;
}Sqlist;

void divide(Sqlist *&L)
{
int i = 0;
int j = L->length-1;
int temp = 0;
while(i<j)
{
if((L->data[i]%2)==0)
{
temp = L->data[i];
}
else
{
i++;
}
if((L->data[j]%2)==1)
{
L->data[i] = L->data[j];
L->data[j] = temp;
}
else
{
j--;
}
}
for(i=0; i<length; i++)
{
printf("%d ",L.elem);
}
}

int main()
{
int L->data[] = {8,4,6,1,44,96,12,5,55,89,54,36};
int length = sizeof(L->data)/sizeof(L->data[0]);
divide(L)；
return 0 ;
}

刚学的菜鸟，不知道怎么改

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自信男孩 2017-12-01

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#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define MAXSIZE 100

typedef int ElemType;

typedef struct
{
    ElemType data[MAXSIZE];
    int length;
}Sqlist;


void swap(ElemType &a, ElemType &b)
{
    ElemType c;
    c = a;
    a = b;
    b = c;
}

void divide(Sqlist *&L)
{
    int i = 0;
    int j = L->length-1;
    int temp = 0;

    while(1)
    {
        for (; i < L->length; i++)
            if (L->data[i] % 2 == 0)
                break;

        for (; j > i; j--)
            if (L->data[j] % 2 == 1)
                break;

        if (i < j)
            swap(L->data[i], L->data[j]);
        else
            break;

        /*
        if((L->data[i]%2)==0)
        {
            temp = L->data[i];
        }
        else
        {
            i++;
        }
        if((L->data[j]%2)==1)
        {
            L->data[i] = L->data[j];
            L->data[j] = temp;
        }
        else
        {
            j--;
        }
        */
    }
}

void print_list(Sqlist *s)
{
    int i;

    for(i=0; i< s->length; i++)
        printf("%d ", s->data[i]);
    putchar(10);
}

int main()
{
    Sqlist *L, s;
    int n, i;
    printf("Input the number of list: ");
    scanf("%d", &n);
    if (n > MAXSIZE)
        return 0;
    L = &s;
    srand(time(NULL));
    for (i = 0; i < n; i++)
        L->data[i] = rand() % 100;
    L->length = n;

    printf("Before swap: \n");
    print_list(L);
    divide(L);
    printf("After swap: \n");
    print_list(L);
    return 0 ;
}

参考一下吧 L->length不能直接通过sizeof获得，因为sizeof得到的是MAXSIZE，但是实际上没有那么多数据。所以，采用输入的形式；分类函数也有点逻辑问题，上面的代码供参考；

老马何以识途 2017-12-01

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看起来你的基本概念都没掌握，回去重新好好看书吧。

Sasura_321 2017-12-01

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引用 2 楼 cfjtaishan 的回复:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define MAXSIZE 100

typedef int ElemType;

typedef struct
{
    ElemType data[MAXSIZE];
    int length;
}Sqlist;


void swap(ElemType &a, ElemType &b)
{
    ElemType c;
    c = a;
    a = b;
    b = c;
}

void divide(Sqlist *&L)
{
    int i = 0;
    int j = L->length-1;
    int temp = 0;

    while(1)
    {
        for (; i < L->length; i++)
            if (L->data[i] % 2 == 0)
                break;

        for (; j > i; j--)
            if (L->data[j] % 2 == 1)
                break;

        if (i < j)
            swap(L->data[i], L->data[j]);
        else
            break;

        /*
        if((L->data[i]%2)==0)
        {
            temp = L->data[i];
        }
        else
        {
            i++;
        }
        if((L->data[j]%2)==1)
        {
            L->data[i] = L->data[j];
            L->data[j] = temp;
        }
        else
        {
            j--;
        }
        */
    }
}

void print_list(Sqlist *s)
{
    int i;

    for(i=0; i< s->length; i++)
        printf("%d ", s->data[i]);
    putchar(10);
}

int main()
{
    Sqlist *L, s;
    int n, i;
    printf("Input the number of list: ");
    scanf("%d", &n);
    if (n > MAXSIZE)
        return 0;
    L = &s;
    srand(time(NULL));
    for (i = 0; i < n; i++)
        L->data[i] = rand() % 100;
    L->length = n;

    printf("Before swap: \n");
    print_list(L);
    divide(L);
    printf("After swap: \n");
    print_list(L);
    return 0 ;
}

好的，谢谢