#1316
Distinct Echo Substrings
candidate master · 1390 · lc hard +32 · verified · 53% accepted · 337 likes · top 44%
Description
Count the number of distinct non-empty substrings of text that consist of some string a concatenated with itself (i.e., substrings that can be written as a + a).
Example 1:
Input: text = "abcabcabc"
Output: 3
Explanation: The 3 substrings are "abcabc", "bcabca" and "cabcab".
Example 2:
Input: text = "leetcodeleetcode"
Output: 2
Explanation: The 2 substrings are "ee" and "leetcodeleetcode".
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