But amazon can do the search in O(n). Why it has to go for O(nk)? For data structures like Hash tables and for large data, n will be large. So O(nk) is better than O(n) (former n is smaller than latter n).
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O(nk) is better than O(n) for large data and hash tables.
O(nk) is better because it takes into account the size of the data and the number of keys.
For large data and hash tables, the size of n will be...read more
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