#697
Degree of an Array
pupil · 440 · lc easy +26 · verified · 58.2% accepted · 3,263 likes · top 54%
Description
The degree of an array of non-negative integers nums is the highest frequency of any single element. Find the shortest contiguous subarray of nums that has the same degree as nums, and return its length.
Example 1:
Input: nums = [1,2,2,3,1]
Output: 2
Explanation:
The input array has a degree of 2 because both elements 1 and 2 appear twice.
Of the subarrays that have the same degree:
[1, 2, 2, 3, 1], [1, 2, 2, 3], [2, 2, 3, 1], [1, 2, 2], [2, 2, 3], [2, 2]
The shortest length is 2. So return 2.
Example 2:
Input: nums = [1,2,2,3,1,4,2]
Output: 6
Explanation:
The degree is 3 because the element 2 is repeated 3 times.
So [2,2,3,1,4,2] is the shortest subarray, therefore returning 6.
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