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@ -163,7 +163,7 @@ class Solution:
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for index, value in enumerate(nums):
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if target - value in records: # 遍历当前元素,并在map中寻找是否有匹配的key
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return [records[target- value], index]
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records[value] = index # 遍历当前元素,并在map中寻找是否有匹配的key
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records[value] = index # 如果没找到匹配对,就把访问过的元素和下标加入到map中
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return []
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```
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(版本二)使用集合
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