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#用二分查找法class Solution(object): def searchRange(self, nums, target): """ :type nums: List[int] :type target: int :rtype: List[int] """ first = 0 last = 阅读全文
posted @ 2020-02-11 17:13
米开朗菠萝
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# 递归方法解决class Solution(object): def letterCombinations(self, digits): """ :type digits: str :rtype: List[str] """ d = {"2":"abc", "3":"def", "4":"ghi" 阅读全文
posted @ 2020-02-11 16:16
米开朗菠萝
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class Solution(object): def isValid(self, s): """ :type s: str :rtype: bool """ stack = [] #存放符号 d = {"]": "[", ")":"(", "}":"{"} “”“ 判断符号是否是结束符号，如果是， 阅读全文
posted @ 2020-02-11 13:53
米开朗菠萝
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