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| Seq. | Title | Category | Version | Topic | Difficulty | |
|---|---|---|---|---|---|---|
| 1 | Array Decrements | Coding | 17 | Data Structures and Data Manipulation | Junior | |
| 2 | Given an array A of n integers, | Coding | 17 | Data Structures and Data Manipulation | Junior | |
| 3 | Paper coloring | Coding | 17 | Data Structures and Data Manipulation | Junior | |
| 4 | Find persistence | Coding | 17 | Data Structures and Data Manipulation | Junior | |
| 5 | Most common strings | Coding | 17 | Data Structures and Data Manipulation | Junior |
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1 out of 64
Given a string s, determine the length of the longest substring that occurs between two identical characters within the string, excluding those identical characters themselves. If no such substring exists, return -1.
Input: s, a non-empty string consisting of English letters.
Expected return value: an integer representing the length of the longest substring satisfying the condition.
Example: s = "bderdb" → 4
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| Topic | Difficulty | Score | Random | Time (min) |
|---|---|---|---|---|
| Coding / Java / 17 / Data Structures and… | Junior | x4 | 5 | 2 |
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