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229. Majority Element II
Description
Given an integer array of size n, find all elements that appear more than ⌊ n/3 ⌋ times.
Example 1:
Input: nums = [3,2,3] Output: [3]
Example 2:
Input: nums = [1] Output: [1]
Example 3:
Input: nums = [1,2] Output: [1,2]
Constraints:
1 <= nums.length <= 5 * 104-109 <= nums[i] <= 109
Follow up: Could you solve the problem in linear time and in O(1) space?