多数投票算法 Majority Vote Algorithm

题目以下:html Write a program to find the element in an array that is repeated more than half number of times. Return -1 if no such element is found.算法 分析以下：数组 最容易想到的办法是，用一个hash或者map去统计每一个元素的出现次数，而后得出答案。时

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