Majority Element
Detailed guide and Python implementation for the 'Majority Element' problem.
Problem Statement
Write a function find_majority_element(arr) that takes a list of integers arr and returns the majority element (the element that appears more than n // 2 times). You may assume that the majority element always exists in the array.
- •1 <= len(arr) <= 5 * 10^4
- •-10^9 <= arr[i] <= 10^9
Examples
arr = [3, 2, 3]
3
3 appears twice, which is more than 3 // 2 = 1 time.
arr = [2, 2, 1, 1, 1, 2, 2]
2
2 appears 4 times, which is more than 7 // 2 = 3 times.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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