Distinct Echo Substrings - Practice Coding | SlaveCode
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1316. Distinct Echo Substrings
Hard
50 Points
String
Trie
Rolling Hash
Hash Function
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).
Examples
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.
1316. Distinct Echo Substrings
Hard
50 Points
String
Trie
Rolling Hash
Hash Function
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).
Examples
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".