InterviewBit Problems   Implement StrStr : Unsolved

About the Implement StrStr : Unsolved category (1)
-1 for this specific input. What is the reason ? Every other input is giving correct answer (4)
Why this is not workiing (1)
What's wrong in this cpp code (1)
Simple c++ stl solution (4)
1 Line C++ Answer xD (2)
Why isn't this Soln. working for this case: (1)
KMP algorithm timing out (11)
What's wrong with my code?. it failed for words like, A=bbbbbbaba and B=baba A=aaaashhh and B=ash (1)
How do I tell which one is haystack and which one is needle between A and B (4)
Could you please figure why this logic is Stuck? (3)
Confusion in test cases (3)
Runtime Exception , How to reesolve? (1)
Wrong test which is confusion (3)
Expected output correct? (2)
Solution with Rabin Karp algo. in c++ (1)
Test Case confusioin: (3)
Wrong answer but got accepted (1)
Fastest Cpp Solution using KMP algorithm (1)
INput parameters not coming in PHP (1)
Wheather A is needle or B? no proper mention in problem statement (3)
Explanations mismatch with test cases (1)
Wrong answer for a testcase (2)
Compiler Error, returns true for false condition (1)
A is haystack, B is needle (2)
Library functions working (1)
Why is z-algorithm not working? (3)
Notice about index (1)
Error on submission (1)
Clarification should be given regarding what is pattern and what is string (1)