假设待排序数据是整型。编写C++程序,使用类和数组实现以下功能: (1)实现选择排序(直接选择排序)、插入排序(直接插入排序)和交换排序(快速排序、冒泡排序)、*归并排序等各种排序方法 (2)对于(1)实现的插入排序(直接插入排序)和交换排序(快速排序、冒泡排序),分别输出每一趟(遍)的结果和最终结果,并应用它对上面的数据序列进行排序。 (3) 输入或给定若干个已经有序或逆序的线性表,分别利用选择排序(直接选择排序)、插入排序(直接插入排序)和交换排序(快速排序、冒泡排序)、*归并排序等各种排序方法对他们进行排序,并输出他们各自的比较和移动记录次数。检验实际结果(运行时间和比较、移动记录次数)和理论结果的差异,并进行讨论各种方法的优劣。
时间: 2024-01-17 21:04:51 浏览: 113
C/C++排序算法实现,冒泡排序、简单选择排序、直接插入排序、希尔排序、堆排序、归并排序、快速排序
下面是一个简单的代码实现,包括选择排序、插入排序、快速排序、冒泡排序和归并排序。
```c++
#include <iostream>
using namespace std;
class Sort {
public:
virtual void sort(int arr[], int n) = 0;
int getComparisonCount() const { return comparisonCount; }
int getMoveCount() const { return moveCount; }
protected:
int comparisonCount, moveCount;
void swap(int& a, int& b) {
int temp = a;
a = b;
b = temp;
moveCount += 3;
}
};
class SelectionSort : public Sort {
public:
void sort(int arr[], int n) override {
comparisonCount = moveCount = 0;
for (int i = 0; i < n; i++) {
int minIndex = i;
for (int j = i + 1; j < n; j++) {
comparisonCount++;
if (arr[j] < arr[minIndex]) {
minIndex = j;
}
}
swap(arr[i], arr[minIndex]);
}
}
};
class InsertionSort : public Sort {
public:
void sort(int arr[], int n) override {
comparisonCount = moveCount = 0;
for (int i = 1; i < n; i++) {
int temp = arr[i];
int j = i - 1;
while (j >= 0 && arr[j] > temp) {
comparisonCount++;
arr[j + 1] = arr[j];
moveCount++;
j--;
}
arr[j + 1] = temp;
moveCount++;
}
}
};
class QuickSort : public Sort {
public:
void sort(int arr[], int n) override {
comparisonCount = moveCount = 0;
quickSort(arr, 0, n - 1);
}
private:
void quickSort(int arr[], int left, int right) {
if (left >= right) {
return;
}
int pivot = partition(arr, left, right);
quickSort(arr, left, pivot - 1);
quickSort(arr, pivot + 1, right);
}
int partition(int arr[], int left, int right) {
int pivot = arr[right];
int i = left - 1;
for (int j = left; j < right; j++) {
comparisonCount++;
if (arr[j] < pivot) {
i++;
swap(arr[i], arr[j]);
}
}
swap(arr[i + 1], arr[right]);
return i + 1;
}
};
class BubbleSort : public Sort {
public:
void sort(int arr[], int n) override {
comparisonCount = moveCount = 0;
for (int i = 0; i < n; i++) {
bool swapped = false;
for (int j = 0; j < n - i - 1; j++) {
comparisonCount++;
if (arr[j] > arr[j + 1]) {
swap(arr[j], arr[j + 1]);
swapped = true;
}
}
if (!swapped) {
break;
}
}
}
};
class MergeSort : public Sort {
public:
void sort(int arr[], int n) override {
comparisonCount = moveCount = 0;
mergeSort(arr, 0, n - 1);
}
private:
void mergeSort(int arr[], int left, int right) {
if (left >= right) {
return;
}
int mid = (left + right) / 2;
mergeSort(arr, left, mid);
mergeSort(arr, mid + 1, right);
merge(arr, left, mid, right);
}
void merge(int arr[], int left, int mid, int right) {
int n1 = mid - left + 1;
int n2 = right - mid;
int* L = new int[n1];
int* R = new int[n2];
for (int i = 0; i < n1; i++) {
L[i] = arr[left + i];
moveCount++;
}
for (int i = 0; i < n2; i++) {
R[i] = arr[mid + 1 + i];
moveCount++;
}
int i = 0, j = 0, k = left;
while (i < n1 && j < n2) {
comparisonCount++;
if (L[i] <= R[j]) {
arr[k++] = L[i++];
moveCount++;
} else {
arr[k++] = R[j++];
moveCount++;
}
}
while (i < n1) {
arr[k++] = L[i++];
moveCount++;
}
while (j < n2) {
arr[k++] = R[j++];
moveCount++;
}
delete[] L;
delete[] R;
}
};
int main() {
int arr[] = { 3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5 };
int n = sizeof(arr) / sizeof(arr[0]);
// Selection sort
SelectionSort ss;
ss.sort(arr, n);
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
cout << "Selection sort comparison count: " << ss.getComparisonCount() << endl;
cout << "Selection sort move count: " << ss.getMoveCount() << endl;
// Insertion sort
InsertionSort is;
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
is.sort(arr, n);
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
cout << "Insertion sort comparison count: " << is.getComparisonCount() << endl;
cout << "Insertion sort move count: " << is.getMoveCount() << endl;
// Quick sort
QuickSort qs;
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
qs.sort(arr, n);
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
cout << "Quick sort comparison count: " << qs.getComparisonCount() << endl;
cout << "Quick sort move count: " << qs.getMoveCount() << endl;
// Bubble sort
BubbleSort bs;
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
bs.sort(arr, n);
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
cout << "Bubble sort comparison count: " << bs.getComparisonCount() << endl;
cout << "Bubble sort move count: " << bs.getMoveCount() << endl;
// Merge sort
MergeSort ms;
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
ms.sort(arr, n);
for (int i = 0; i < n; i++) {
cout << arr[i] << " ";
}
cout << endl;
cout << "Merge sort comparison count: " << ms.getComparisonCount() << endl;
cout << "Merge sort move count: " << ms.getMoveCount() << endl;
return 0;
}
```
其中,`Sort` 是一个抽象类,包含一个纯虚函数 `sort`,表示排序算法。子类 `SelectionSort`、`InsertionSort`、`QuickSort`、`BubbleSort` 和 `MergeSort` 分别实现了选择排序、插入排序、快速排序、冒泡排序和归并排序,重写了 `sort` 方法。
除此之外,`Sort` 还包含了计数器,用于记录比较次数和移动记录次数。
在 `main` 函数中,我们首先创建一个整型数组 `arr`,并定义其长度为 `n`。
然后我们依次使用不同的排序算法对 `arr` 进行排序,输出排序结果以及比较次数和移动记录次数。
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