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Polish some contents.
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@ -10,11 +10,11 @@ def selection_sort(nums: list[int]):
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n = len(nums)
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# 外循环:未排序区间为 [i, n-1]
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for i in range(n - 1):
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# 内循环:找到未排序区间 [i, n-1] 中的最小元素
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# 内循环:找到未排序区间内的最小元素
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k = i
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for j in range(i + 1, n):
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if nums[j] < nums[k]:
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k = j # 更新最小元素
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k = j # 记录最小元素的索引
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# 将该最小元素与未排序区间的首个元素交换
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nums[i], nums[k] = nums[k], nums[i]
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