三数排序两种方法编写程序,实现对三个整数由小到大排序,并输出。考虑整型、小数、字符等不同类型数的排序。

方法一：

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    int a, b, c;
    cout << "请输入三个整数：";
    cin >> a >> b >> c;
    int arr[] = {a, b, c};
    sort(arr, arr + 3);
    cout << "排序后的结果为：" << arr[0] << " " << arr[1] << " " << arr[2] << endl;
    return 0;
}

方法二：

#include <iostream>
using namespace std;

template <typename T>
void swap(T& a, T& b) {
    T temp = a;
    a = b;
    b = temp;
}

template <typename T>
void sort(T arr[], int n) {
    for (int i = 0; i < n - 1; i++) {
        for (int j = i + 1; j < n; j++) {
            if (arr[i] > arr[j]) {
                swap(arr[i], arr[j]);
            }
        }
    }
}

int main() {
    int a, b, c;
    cout << "请输入三个数：";
    cin >> a >> b >> c;
    int arr1[] = {a, b, c};
    sort(arr1, 3);
    cout << "排序后的结果为：" << arr1[0] << " " << arr1[1] << " " << arr1[2] << endl;

    double d1, d2, d3;
    cout << "请输入三个小数：";
    cin >> d1 >> d2 >> d3;
    double arr2[] = {d1, d2, d3};
    sort(arr2, 3);
    cout << "排序后的结果为：" << arr2[0] << " " << arr2[1] << " " << arr2[2] << endl;

    char c1, c2, c3;
    cout << "请输入三个字符：";
    cin >> c1 >> c2 >> c3;
    char arr3[] = {c1, c2, c3};
    sort(arr3, 3);
    cout << "排序后的结果为：" << arr3[0] << " " << arr3[1] << " " << arr3[2] << endl;

    return 0;
}