Missing Testcase - 3083 Existence of a Substring in a String and Its Reverse

LeetCode Username

shaishavjogani

Problem number, title, and link

Existence of a Substring in a String and Its Reverse https://leetcode.com/problems/existence-of-a-substring-in-a-string-and-its-reverse/

Category of the bug

[ ] Problem description
[ ] Solved examples
[ ] Problem constraints
[ ] Problem hints
[ ] Incorrect or missing "Related Topics"
[ ] Incorrect test Case (Output of test case is incorrect as per the problem statement)
[X] Missing test Case (Incorrect/Inefficient Code getting accepted because of missing test cases)
[ ] Editorial
[ ] Programming language support

Description of the bug

It is missing the test cases. The problem ask to find substring of size 2 which also exists in it's reverse.

It is missing testcase like this "abcdefba" where first two char and last char of string satisfies the condtion. However, I tried to submit incorrect code which basically checks for palindrome substring of size 2 or 3. It was accepted even though it is wrong.

Language used for code

JAVA

Code used for Submit/Run operation

// Paste your code here. Don't remove ``` given
// above and below the code.
class Solution {
    public boolean isSubstringPresent(String s) {
        if(s == null || s.length() < 2) {
            return false;
        }

        for(int i=0; i < s.length()-1; i++) {
            if(s.charAt(i) == s.charAt(i+1)) { // Repeating chars satisfies the conditions. Palindrom of size 2
                return true;
            }
            if((i+2) < s.length() && s.charAt(i) == s.charAt(i+2)) { // Palindrom of length 3. e.g. "aba"
                return true;
            }
        }
        return false;
    }
}

Expected behavior

Input: "abcdefgba" Expected output: true Actual output: false

Input: "abdrpdbko" Expected output: true Actual output: false

It should fail, but code got accepted.

Additional context

https://leetcode.com/problems/existence-of-a-substring-in-a-string-and-its-reverse/submissions/1205974345/

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