Data Structures & Algorithms using JavaScript
/Intermediate
Remove Duplicates
Definition
Removing duplicates from a sorted array in-place requires a 'slow' pointer (tracking where the next unique element should go) and a 'fast' pointer (scanning for new unique elements).
Explain Like I'm New
Having an empty box. Every time you see a new unique toy on the assembly line, you put it in the box. If you see the same toy 5 times, you ignore it.
Interactive Coding Challenges
Remove Duplicates from Sorted Array
Solution Code
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O(N) Time, O(1) Space.