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@ -141,7 +141,20 @@ Java:
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Python:
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```python3
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class Solution:
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def isValid(self, s: str) -> bool:
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stack = [] # 保存还未匹配的左括号
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mapping = {")": "(", "]": "[", "}": "{"}
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for i in s:
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if i in "([{": # 当前是左括号,则入栈
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stack.append(i)
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elif stack and stack[-1] == mapping[i]: # 当前是配对的右括号则出栈
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stack.pop()
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else: # 不是匹配的右括号或者没有左括号与之匹配,则返回false
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return False
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return stack == [] # 最后必须正好把左括号匹配完
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```
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Go:
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