Clinic #05 - Two Sum
Pattern: Hashing (memory of the past) · LC 1

Ek hi sawaal ke teen jawab dikhaata hai: seedha tareeka, sort karke milna, aur yaad rakh kar dhoondna. Upar ka “LC 1” matlab LeetCode ka problem number 1.
Before you start. List mein har number ki apni jagah hoti hai - use uska index kehte hain, 0 se ginkar. Foundations #04 - Hashing (O(1) "yaad") ya Hashing ne hash map ke andar (buckets, collisions) pehle dikhaya ho toh wahi machine yahan istemaal ho rahi hai - is note mein sirf ek problem pe.