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chapter_sorting/merge_sort.md
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# 11.6   归并排序
「归并排序 Merge Sort」基于分治思想实现排序，包含“划分”和“合并”两个阶段：
「归并排序 merge sort」基于分治思想实现排序，包含“划分”和“合并”两个阶段：
1. **划分阶段**：通过递归不断地将数组从中点处分开，将长数组的排序问题转换为短数组的排序问题。
2. **合并阶段**：当子数组长度为 1 时终止划分，开始合并，持续地将左右两个较短的有序数组合并为一个较长的有序数组，直至结束。