```
public class Solution
extends Object
```
1316 - Distinct Echo Substrings\. Hard Return the number of **distinct** non-empty substrings of `text` that can be written as the concatenation of some string with itself (i.e. it can be written as `a + a` where `a` is some string). **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". **Constraints:** * `1 <= text.length <= 2000` * `text` has only lowercase English letters.

public int distinctEchoSubstrings(String text)

Class Solution