Every major tech company asks this or a variation of it. It's required knowledge. If you can't reverse a linked list quickly, interviewers will question your basics. This technique is a building block for harder problems: reverse nodes in k-group, palindrome linked list, reorder list. The three-pointer pattern (prev, curr, next) appears in all of them. Interviewers often ask: "Can you do it recursively?" or "Reverse only between positions m and n." Know the iterative version cold, then practice variations.
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
$ curl repovive.com/roadmaps/maang-interview-prep/linked-lists/reverse-linked-list-why-this-problem
░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░███████████████████████████████████████████████████████████████████████████████████████████████████