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[leetcode] Longest Common Prefix @ Python
Source: https://oj.leetcode.com/problems/longest-common-prefix/
Write a function to find the longest common prefix string amongst an array of strings.
Hint: strs=[‘abc‘,‘ab‘,‘a‘]
strs=[
‘abc‘,
‘ab‘,
‘a‘,
]
We can think of strs as a column length varied matrix
class Solution: # @return a string def longestCommonPrefix(self, strs): #横向扫描，每个字符串与第0 个字符串，从左到右比较，直到遇到一个不匹配， #然后继续下一个字符串 #时间复杂度O(n1+n2+...) if len(strs) == 0: return "" minL = min([len(word) for word in strs]) for j in range(minL): for i in range(1, len(strs)): if strs[i][j] != strs[0][j]: return strs[0][:j] return strs[0][:minL]
[leetcode] Longest Common Prefix @ Python
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