顺序表静态查找

实现顺序表的静态查找（SeqSearch、BinarySearch、GoldenSectionSearch、）

how many elements in your list:20
Please enter the 1th number:1
Please enter the 2th number:11
Please enter the 3th number:2
Please enter the 4th number:22
Please enter the 5th number:3
Please enter the 6th number:33
Please enter the 7th number:4
Please enter the 8th number:44
Please enter the 9th number:5
Please enter the 10th number:55
Please enter the 11th number:6
Please enter the 12th number:66
Please enter the 13th number:7
Please enter the 14th number:77
Please enter the 15th number:8
Please enter the 16th number:88
Please enter the 17th number:9
Please enter the 18th number:99
Please enter the 19th number:10
Please enter the 20th number:111
The list you create is:
1  11  2  22  3  33  4  44  5  55  6  66  7  77  8  88  9  99  10  111
The list after sorting is:
1  2  3  4  5  6  7  8  9  10  11  22  33  44  55  66  77  88  99  111
Please enter the number you want to search:3
SeqSearch=======18
the number's position is:3
BinarySearch=======4
the number's position is:3
GoldenSectionSearch=======5
the number's position is:3
请按任意键继续. . .

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

#define GOLD 0.618
#define MAX_SIZE 100

typedef int ElementType;
typedef int KeyType;

typedef struct 
{
    ElementType elem[MAX_SIZE];
    int length;
}SSTable;

int Search(SSTable *ST,KeyType key);
void ListInit(SSTable *ST);
void ListCreate(SSTable *ST, int count);
void ListSort(SSTable *ST);
int BinarySearch(SSTable *ST,KeyType key);
void ListDisplay(SSTable *ST);
int GoldenSectionSearch(SSTable *ST,KeyType key);

void main()
{
    int i,count, num;
    SSTable ST;
    ListInit(&ST);
    printf_s("how many elements in your list:");
    scanf_s("%d",&count);
    ListCreate(&ST,count);
    printf_s("The list you create is:\n");
    ListDisplay(&ST);

    ListSort(&ST);
    printf_s("The list after sorting is:\n");
    ListDisplay(&ST);

    printf_s("Please enter the number you want to search:");
    scanf_s("%d",&num);

    printf_s("SeqSearch");
    i = Search(&ST,num);
    printf_s("the number's position is:%d\n",i);

    printf_s("BinarySearch");
    i = BinarySearch(&ST,num);
    printf_s("the number's position is:%d\n",i);

    printf_s("GoldenSectionSearch");
    i = GoldenSectionSearch(&ST,num);
    printf_s("the number's position is:%d\n",i);
    system("pause");
}

void ListInit(SSTable *ST)
{
    ST->length=0;
}

void ListCreate(SSTable *ST, int count)
{
    int i,num;
    ST->length=count;
    for(i=1;i<=count;++i)
    {
        printf_s("Please enter the %dth number:",i);
        scanf_s("%d",&num);
        ST->elem[i]=num;
    }
}

void ListSort(SSTable *ST)
{
    int i,j,temp;
    for(j=1;j<=ST->length-1;++j)
    {
        for(i=1;i<=ST->length-j;++i)
        {
            if(ST->elem[i]>ST->elem[i+1])
            {
                temp=ST->elem[i];
                ST->elem[i]=ST->elem[i+1];
                ST->elem[i+1]=temp;
            }
        }
    }
}

int Search(SSTable *ST,KeyType key)
{
    int i, counter;
    counter = 0;
    ST->elem[0]=key;
    for(i = ST->length; i > 0; --i)
    {
        ++counter;
        if(key==ST->elem[i])
        {
            printf_s("=======%d\n",counter);
            return i;
        }
    }
    printf_s("=======%d\n",counter);
    return i;
}

int BinarySearch(SSTable *ST,KeyType key)
{
    int low,high,mid,counter;
    low=1;
    counter=1;
    high=ST->length;
    while(low<=high)
    {
        mid=(low+high)/2;
        if(key==ST->elem[mid])
        {
            printf_s("=======%d\n",counter);
            return mid;
        }else if(key<ST->elem[mid])
        {
            ++counter;
            high=mid-1;
        }else
        {
            ++counter;
            low=mid+1;
        }
    }
    printf_s("=======%d\n",counter);
    return 0;
}

int GoldenSectionSearch(SSTable *ST,KeyType key)
{
    int low,high,mid,counter;
    low=1;
    counter=1;
    high=ST->length;
    while(low<=high)
    {
        mid=(high -low)*GOLD +low;
        //mid = high * GOLD + low*(1-GOLD);
        if(key==ST->elem[mid])
        {
            printf_s("=======%d\n",counter);
            return mid;
        }else if(key<ST->elem[mid])
        {
            ++counter;
            high=mid-1;
        }else
        {
            ++counter;
            low=mid+1;
        }
    }
    printf_s("=======%d\n",counter);
    return 0;
}

void ListDisplay(SSTable *ST)
{
    int i;
    for (i = 1; i <= ST->length; ++i)
    {
        printf_s("%d  ", ST->elem[i]);
    }
    printf_s("\n");
}