Arrays, Explained From Zero (Why arr[i] Is Instant)

Why can you access any element in an array in O(1) time? Learn how arrays work under the hood—from memory allocation to indexing—and understand why arr[i] is instant.

Topics covered:
• How arrays store data in contiguous memory
• Why random access is O(1)
• Dynamic arrays vs static arrays
• ArrayList/Vector internals
• When arrays are fast vs slow

Perfect for coding interviews, LeetCode prep, and building a solid foundation in data structures.

#DataStructures #BigO #CodingInterview #DSA #ComputerScience

Видео Arrays, Explained From Zero (Why arr[i] Is Instant) канала Unrote