Leetcode: Repeated Substring Pattern

Check whether string can be created by keep repeating one substring.



Similar Problems:


Given a non-empty string check if it can be constructed by taking a substring of it and appending multiple copies of the substring together. You may assume the given string consists of lowercase English letters only and its length will not exceed 10000.

Example 1:

Input: "abab"

Output: True

Explanation: It’s the substring “ab” twice.
Example 2:

Input: "aba"

Output: False

Example 3:

Input: "abcabcabcabc"

Output: True

Explanation: It’s the substring “abc” four times. (And the substring “abcabc” twice.)

Github: code.dennyzhang.com

Credits To: leetcode.com

Leave me comments, if you have better ways to solve.


## Blog link: https://code.dennyzhang.com/repeated-substring-pattern
class Solution:
    def repeatedSubstringPattern(self, s):
        """
        :type s: str
        :rtype: bool
        """
        if len(s) == 0: return False
        return s in (s+s)[1:-1]
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