C++ 实现有序表折半查找算法及银行账户管理系统
C++ 实现有序表折半查找算法及银行账户管理系统
一、用 C++ 语言编程实现有序表的折半查找算法
下面是用 C++ 语言实现有序表的折半查找算法的代码:
#include <iostream>
using namespace std;
int binarySearch(int arr[], int left, int right, int target) {
while (left <= right) {
int mid = left + (right - left) / 2;
if (arr[mid] == target) {
return mid;
}
if (arr[mid] < target) {
left = mid + 1;
} else {
right = mid - 1;
}
}
return -1;
}
int main() {
int arr[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int target = 5;
int size = sizeof(arr) / sizeof(arr[0]);
int result = binarySearch(arr, 0, size - 1, target);
if (result == -1) {
cout << 'Element not found' << endl;
} else {
cout << 'Element found at index ' << result << endl;
}
return 0;
}
二、设计一个 Bank 类,实现银行某账户的资金往来账目管理
程序要求完成以下操作:
- 创建账户:包括账号、创建日期、余额。
- 存钱:执行存钱操作,并记录存钱日期和存钱数目。
- 取钱:执行取钱操作,并记录取钱日期和取钱数目。
- 查询交易明细:查询近一个月的账户交易记录。
Bank 类的实现如下:
#include <iostream>
#include <string>
#include <vector>
#include <ctime>
using namespace std;
class Bank {
private:
string accountNumber;
string createDate;
double balance;
vector<pair<string, double>> transactions;
public:
Bank(string accountNumber, string createDate, double balance) {
this->accountNumber = accountNumber;
this->createDate = createDate;
this->balance = balance;
}
void deposit(double amount) {
balance += amount;
time_t now = time(0);
tm *ltm = localtime(&now);
string date = to_string(1900 + ltm->tm_year) + '-' + to_string(1 + ltm->tm_mon) + '-' + to_string(ltm->tm_mday);
transactions.push_back(make_pair(date, amount));
}
void withdraw(double amount) {
if (amount > balance) {
cout << 'Insufficient balance' << endl;
} else {
balance -= amount;
time_t now = time(0);
tm *ltm = localtime(&now);
string date = to_string(1900 + ltm->tm_year) + '-' + to_string(1 + ltm->tm_mon) + '-' + to_string(ltm->tm_mday);
transactions.push_back(make_pair(date, -amount));
}
}
void printTransactions() {
time_t now = time(0);
tm *ltm = localtime(&now);
string currentDate = to_string(1900 + ltm->tm_year) + '-' + to_string(1 + ltm->tm_mon) + '-' + to_string(ltm->tm_mday);
cout << 'Recent transactions:' << endl;
for (int i = transactions.size() - 1; i >= 0; i--) {
string transactionDate = transactions[i].first;
double transactionAmount = transactions[i].second;
if (currentDate == transactionDate || currentDate < transactionDate) {
cout << transactionDate << ': ';
if (transactionAmount > 0) {
cout << 'Deposit: ' << transactionAmount << endl;
} else {
cout << 'Withdraw: ' << -transactionAmount << endl;
}
}
}
}
};
int main() {
Bank bank('123456789', '2021-01-01', 1000);
bank.deposit(500);
bank.withdraw(200);
bank.printTransactions();
return 0;
}
这个程序创建了一个 Bank 类,包括账号、创建日期和余额。可以使用 deposit() 方法进行存钱操作,使用 withdraw() 方法进行取钱操作,并记录存取钱的日期和金额。可以使用 printTransactions() 方法查询近一个月的账户交易记录。在 main() 函数中,演示了如何使用 Bank 类进行操作,并输出交易明细。
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