459. Repeated Substring Pattern LeetCode Solution | Easy Approach

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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.

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 <= 104
  • s consists of lowercase English letters.

Repeated Substring Pattern Solutions

Time: O(n)
Space: O(n)

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