01背包问题回溯法java
时间: 2023-08-27 20:16:17 浏览: 56
当涉及到背包问题时,回溯法是一种常用的解决方法。下面是一个使用回溯法解决01背包问题的Java代码示例:
```java
public class KnapsackBacktracking {
private int maxWeight; // 背包的最大承重
private int[] weights; // 物品的重量数组
private int[] values; // 物品的价值数组
private int[] selectedItems; // 选中的物品数组
private int maxTotalValue; // 最大总价值
public KnapsackBacktracking(int maxWeight, int[] weights, int[] values) {
this.maxWeight = maxWeight;
this.weights = weights;
this.values = values;
this.selectedItems = new int[weights.length];
this.maxTotalValue = 0;
}
public void solve() {
backtrack(0, 0, 0);
System.out.println("最大总价值为: " + maxTotalValue);
System.out.print("选中的物品:");
for (int i = 0; i < selectedItems.length; i++) {
if (selectedItems[i] == 1) {
System.out.print(i + " ");
}
}
}
private void backtrack(int index, int currentWeight, int totalValue) {
if (index == weights.length || currentWeight == maxWeight) {
if (totalValue > maxTotalValue) {
maxTotalValue = totalValue;
selectedItems = Arrays.copyOf(selectedItems,
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![text/x-c++](https://img-home.csdnimg.cn/images/20210720083646.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)