#3843

First Element with Unique Frequency

pupil · 575 · lc medium +29 · 69.7% accepted · 73 likes · top 78%

Description

Given an integer array nums, scan from left to right and return the first element whose occurrence count in nums is not shared by any other element. If every element's frequency is matched by at least one other element, return -1.

Code

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class Solution:
    def firstUniqueFreq(self, nums: List[int]) -> int:

class Solution:
    def firstUniqueFreq(self, nums: List[int]) -> int: