java merge
时间: 2023-10-19 19:33:17 浏览: 102
引用中提到了一种用迭代的方法进行归并排序的实现方式。在这种方法中,我们从初始有序长度为1开始,不断对已经有序的左组和未经排序的右组进行合并,同时左右组的长度会一起增长,直到完成排序。具体的实现代码如下:
```java
public static void mergeSort2(int[] arr){
if(arr == null || arr.length < 2){
return;
}
int N = arr.length;
int mergeSize = 1;
while(mergeSize < N){
int L = 0;
while(L < N){
int M = L + mergeSize - 1;
if (M >= N){
break;
}
int R = Math.min(M + mergeSize, N - 1);
merge(arr, L, M, R);
L = R + 1;
}
if (mergeSize > N / 2){
break;
}
mergeSize <<= 1;
}
}
private static void merge(int[] arr, int L, int M, int R){
// 合并操作
// ...
}
```
这段代码实现了归并排序的核心逻辑。其中,mergeSort2方法用来调用merge方法进行归并操作,而merge方法则完成了具体的合并操作。在merge方法中,我们可以根据实际需求来实现对两个有序数组的合并操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Merge.java](https://download.csdn.net/download/weixin_44437775/12561524)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [Java HashMap merge() 方法](https://blog.csdn.net/weixin_34247778/article/details/114561268)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [归并排序(MergeSort) Java实现及解析](https://blog.csdn.net/HLComet_Bay_WC/article/details/120661543)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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