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Repeated Substring Pattern

Given a string s, check if it can be constructed by taking a substring of it and appending multiple copies of the substring together.

Given a string s, check if it can be constructed by taking a substring of it and appending multiple copies of the substring together.

Repeated Substring Pattern diagram

Example 1

Input: s = "abab"

Output: true

Explanation: It is the substring "ab" twice.

Example 2

Input: s = "aba"

Output: false

Example 3

Input: s = "abcabcabcabc"

Output: true

Explanation: It is the substring "abc" four times or the substring "abcabc" twice.

Constraints

  • 1 <= s.length <= 10^4
  • s consists of lowercase English letters.

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