写个快速排序或者汉诺塔算法 用java
时间: 2023-02-26 13:53:17 浏览: 61
快速排序:
```
import java.util.Arrays;
public class QuickSort {
public static void main(String[] args) {
int[] arr = {5, 7, 2, 4, 9, 1};
quickSort(arr, 0, arr.length - 1);
System.out.println(Arrays.toString(arr));
}
public static void quickSort(int[] arr, int low, int high) {
if (low < high) {
int pivotIndex = partition(arr, low, high);
quickSort(arr, low, pivotIndex - 1);
quickSort(arr, pivotIndex + 1, high);
}
}
public static int partition(int[] arr, int low, int high) {
int pivot = arr[high];
int i = low - 1;
for (int j = low; j < high; j++) {
if (arr[j] <= pivot) {
i++;
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}
int temp = arr[i + 1];
arr[i + 1] = arr[high];
arr[high] = temp;
return i + 1;
}
}
```
汉诺塔算法:
```
public class Hanoi {
public static void main(String[] args) {
int n = 3;
hanoi(n, 'A', 'B', 'C');
}
public static void hanoi(int n, char from, char to, char temp) {
if (n == 1) {
System.out.println("Move disk 1 from " + from + " to " + to);
} else {
hanoi(n - 1, from, temp, to);
System.out.println("Move disk " + n + " from " + from + " to " + to);
hanoi(n - 1, temp, to, from);
}
}
}
```
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