#include <stdio.h>
#define MAXL 100
typedef int KeyType;
typedef char InfoType[10];
typedef struct
{
KeyType key; //KeyType为关键字的数据类型
InfoType data; //其他数据
} NodeType;
typedef NodeType SeqList[MAXL]; //顺序表类型
int BinSearch(SeqList R,int n,KeyType k)
{
int low=0,high=n-1,mid;
while (low<=high)
{
mid=(low+high)/2;
if (R[mid].key==k) //查找成功返回
return mid+1;
if (R[mid].key>k) //继续在R[low..mid-1]中查找
high=mid-1;
else
low=mid+1; //继续在R[mid+1..high]中查找
}
return 0;
}
int main()
{
int i,n=10;
int result;
SeqList R;
KeyType a[]= {12,18,24,35,47,50,62,83,90,115,134},x=100;
for (i=0; i<n; i++)
R[i].key=a[i];
result = BinSearch(R,n,x);
if(result>0)
printf("序列中第 %d 个是 %d\n",result, x);
else
printf("木有找到!\n");
return 0;
#define MAXL 100
typedef int KeyType;
typedef char InfoType[10];
typedef struct
{
KeyType key; //KeyType为关键字的数据类型
InfoType data; //其他数据
} NodeType;
typedef NodeType SeqList[MAXL]; //顺序表类型
int BinSearch(SeqList R,int n,KeyType k)
{
int low=0,high=n-1,mid;
while (low<=high)
{
mid=(low+high)/2;
if (R[mid].key==k) //查找成功返回
return mid+1;
if (R[mid].key>k) //继续在R[low..mid-1]中查找
high=mid-1;
else
low=mid+1; //继续在R[mid+1..high]中查找
}
return 0;
}
int main()
{
int i,n=10;
int result;
SeqList R;
KeyType a[]= {12,18,24,35,47,50,62,83,90,115,134},x=100;
for (i=0; i<n; i++)
R[i].key=a[i];
result = BinSearch(R,n,x);
if(result>0)
printf("序列中第 %d 个是 %d\n",result, x);
else
printf("木有找到!\n");
return 0;
}
<p style="margin-top: 0px; margin-bottom: 0px; padding-top: 0px; padding-bottom: 0px; color: rgb(85, 85, 85); font-family: 'microsoft yahei'; font-size: 15px; line-height: 35px;">运行结果:</p><p style="margin-top: 0px; margin-bottom: 0px; padding-top: 0px; padding-bottom: 0px; color: rgb(85, 85, 85); font-family: 'microsoft yahei'; font-size: 15px; line-height: 35px;">x=47时</p><img src="https://img-blog.youkuaiyun.com/20151201185436714" alt="" />
x=90时
x=100时