Excited to share that I have successfully completed the Data Structures in Java course from CodeChef! Through this course, I strengthened my understanding of core data structures, algorithms, ...

"Consistency is key. 🔑 I recently earned my Certificate of Completion from CodeChef for clearing all problems in the 500 difficulty category. While these are fundamental problems, they provided an ...

Count positions where characters differ without '?' (fixed differences) and positions where at least one character is '?' (flexible differences). Minimum differences come from fixed mismatches, and ...