执行了上面的代码,有bug,可以修改一下bug吗?
时间: 2024-04-17 16:26:12 浏览: 14
非常抱歉,看起来在代码中有一个小错误。在 `backtrack` 方法中,我们需要在递归调用 `backtrack` 之前先检查当前木桶是否已经满了,如果满了则跳过该木桶。请使用以下修改后的代码:
```java
import java.util.ArrayList;
import java.util.List;
public class StoneDistribution {
private static boolean isSolutionFound = false;
public static void main(String[] args) {
int[] stones = {60, 45, 30, 45, 45, 5, 60, 45, 30, 30, 45, 60, 60, 45, 40, 30, 60, 30};
int[] buckets = {180, 240, 180, 240};
List<List<Integer>> distributions = distributeStones(stones, buckets);
if (isSolutionFound) {
System.out.println("石头分配方案:");
for (int i = 0; i < distributions.size(); i++) {
System.out.println("木桶 " + (i + 1) + ": " + distributions.get(i));
}
} else {
System.out.println("找不到合适的石头分配方案!");
}
}
private static List<List<Integer>> distributeStones(int[] stones, int[] buckets) {
List<List<Integer>> distributions = new ArrayList<>();
List<Integer> currentDistribution = new ArrayList<>();
backtrack(stones, buckets, distributions, currentDistribution, 0);
return distributions;
}
private static void backtrack(int[] stones, int[] buckets, List<List<Integer>> distributions,
List<Integer> currentDistribution, int currentIndex) {
if (isSolutionFound) {
return;
}
if (currentIndex == stones.length) {
if (currentDistribution.size() == buckets.length) {
distributions.add(new ArrayList<>(currentDistribution));
isSolutionFound = true;
}
return;
}
for (int i = 0; i < buckets.length; i++) {
if (currentDistribution.size() < i + 1 && currentDistribution.stream().mapToInt(Integer::intValue).sum() + stones[currentIndex] <= buckets[i]) {
currentDistribution.add(stones[currentIndex]);
backtrack(stones, buckets, distributions, currentDistribution, currentIndex + 1);
currentDistribution.remove(currentDistribution.size() - 1);
}
}
// 添加以下代码来跳过已满的木桶
if (currentDistribution.size() < buckets.length && currentDistribution.stream().mapToInt(Integer::intValue).sum() + stones[currentIndex] <= buckets[currentDistribution.size()]) {
backtrack(stones, buckets, distributions, currentDistribution, currentIndex + 1);
}
}
}
```
这次在 `backtrack` 方法的最后添加了一段代码,它会检查当前木桶是否已满,如果已满则直接跳到下一个递归调用。这样就可以避免将石头放入已满的木桶中。
希望这次的修改能够解决问题。如果还有其他问题,请随时提问。