Leetcode PHP题解--D83 169. Majority Element

D83 169. Majority Element

Question link

169. Majority Element

Question analysis

Given an array, return the elements that appear more than half of the time.

Idea

Use the array_count_values ​​function to calculate the number of occurrences of elements, use arsort to sort the results in reverse order, and output the first one. (Related tutorial recommendations: php video tutorial)

Final code

<?php
class Solution {    /**
     * @param Integer[] $nums
     * @return Integer
     */
    function majorityElement($nums) {
        $values = array_count_values($nums);
        arsort($values);        return key($values);
    }
}

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