数据结构-静态查找表（线性查找，折半查找）

#include 
#include 
using namespace std;

typedef int KeyType;
typedef struct {
	KeyType key;
}ElemType;
typedef struct {
	ElemType* data;
	int length;
}SSTable;



bool Create(SSTable& ST, int n);
int Search_Seq(SSTable ST, KeyType kval);//线性查找
int Search_Bin(SSTable ST, KeyType kval);//折半查找

bool Create(SSTable& ST, int n) {
	ST.data = new ElemType[n];
	if (!ST.data)return 0;
	cout << "请输入查找表各元素:" << endl;
	for (int i = 1; i <= n; i++)
		cin >> ST.data[i].key;
	ST.length = n;
	return 1;
}
int Search_Seq(SSTable ST, KeyType kval) {
	//在顺序表ST中顺序查找其关键字等于kval的记录
   //若找到则函数值为该元素在表中的位置，否则为0
	ST.data[0].key = kval;   //设置"哨兵“
	//从后往前查找
	int i;
	for (i = ST.length; ST.data[i].key != kval; i--);
	return i;    //找不到时，i为0
}
int Search_Bin(SSTable ST, KeyType kval){
	//在有序表ST中折半查找关键字等于kval的数据元素。
    //若找到，则函数值为该元素在表中的位置，否则为0。
	int low, high, mid;
	low = 1;  high = ST.length;  //置区间初值
	while (low <= high) {
		mid = (low + high) / 2;
		if (kval == ST.data[mid].key) return mid; //找到
		else if (kval < ST.data[mid].key)
			high = mid - 1; //继续在前半区间内进行查找
		else low = mid + 1; //继续在后半区间内进行查找
	}       
	return 0;      //顺序表中不存在待查元素
}


int main()
{
	SSTable ST;
	int n, i;
	KeyType key;
	cout << "请输入查找表中元素个数:" << endl;
	cin >> n;
	if (!Create(ST, n)) {
		cout << "查找表赋值失败" << endl;
		return 1;
	}
	cout << "请输入要查找的元素值:" << endl;
	cin >> key;
	cout << "线性查找:" << endl;
	i = Search_Seq(ST, key);
	if (i == 0)
		cout << "未找到！" << endl;
	else
		cout << "找到，位序为" << i << endl;
	cout << "-----------------------------------" << endl;

	cout << "折半查找:" << endl;
	i = Search_Bin(ST, key);
	if (i == 0)
		cout << "未找到！" << endl;
	else
		cout << "找到，位序为" << i << endl;
	cout << "-----------------------------------" << endl;
	return 0;
}

实验样例