459. Repeated Substring Pattern
Description
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.
Solutions
Solution 1
1 2 3 |
|
1 2 3 4 5 6 |
|
1 2 3 4 5 6 |
|
1 2 3 |
|
1 2 3 |
|
1 2 3 4 5 |
|