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MergeSort.java
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31 lines (21 loc) · 720 Bytes
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package Sorting.src;
public abstract class MergeSort<T extends Comparable<T>> extends Sort<T> {
protected T[] aux;
protected void merge(T[] nums, int l, int m, int h) {
int i = l, j = m + 1;
for (int k = l; k <= h; k++) {
aux[k] = nums[k]; // 将数据复制到辅助数组
}
for (int k = l; k <= h; k++) {
if (i > m) {
nums[k] = aux[j++];
} else if (j > h) {
nums[k] = aux[i++];
} else if (aux[i].compareTo(nums[j]) <= 0) {
nums[k] = aux[i++]; // 先进行这一步，保证稳定性
} else {
nums[k] = aux[j++];
}
}
}
}