Well, since you have to iterate through the array, the time complexity is dependent on the number of items, therefor it's O(n) and not O(1). Getting values from a hash map is approaching O(1), perhaps that's the source of your confusion.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Well, since you have to iterate through the array, the time complexity is dependent on the number of items, therefor it's O(n) and not O(1). Getting values from a hash map is approaching O(1), perhaps that's the source of your confusion.