Given a Python dictionary d and a value v, it is efficient to find the corresponding key: d[k] = v.Question 5Select one:TrueFalse
Question
Given a Python dictionary d and a value v, it is efficient to find the corresponding key:
d[k] = v.
Question 5
Select one:
True
False
Solution
Answer:
The statement is False.
Explanation:
- In a Python dictionary, searching for a key based on its value (i.e., finding
ksuch thatd[k] = v) is not efficient, as dictionaries are designed for fast key lookups, not value lookups. - To find a key associated with a particular value, you would typically need to iterate through the dictionary, which has a time complexity of O(n), where n is the number of items in the dictionary.
Thus, while you can find a value given its key efficiently in constant time, finding a key given a value is inefficient.
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