Grokking Data Structures & Algorithms for Coding Interviews
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Solution: Majority Element
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Problem Statement

Given an array nums having an n elements, identify the element that appears the majority of the time, meaning more than n/2 times.

Examples

  1. Example 1:

    • Input: [1, 2, 2, 3, 2]
    • Expected Output: 2
    • Justification: Here, '2' appears 3 times in a 5-element array, making it the majority element.

  2. Example 2:

    • Input: [4, 4, 4, 4, 7, 4, 4]
    • Expected Output: 4
    • Justification: '4' is the majority element as it appears 5 out of 7 times.

  3. Example 3:

    • Input: [9, 9, 1, 1, 9, 1, 9, 9]
    • Expected Output: 9

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