Most and Least Frequent Value
Beginner
Return [most, least]: the value that appears most often and the value that appears least often in nums. If several values tie, take the smaller value.
Examples
Example 1
Input:
frequency_extremes([4, 4, 5, 5, 6])
Output:
[4, 6]
4 and 5 both appear twice; the smaller is 4. 6 appears once.
Example 2
Input:
frequency_extremes([7])
Output:
[7, 7]
One value is both the most and the least frequent.
Constraints
1 <= len(nums) <= 3 * 10**5-10**9 <= nums[i] <= 10**9
Theory
Go to TheoryKeywords
dsa-sheethashingcounting-with-dictionaries
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