多數投票算法 Majority Vote Algorithm

題目以下: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：數組 最容易想到的辦法是，用一個hash或者map去統計每一個元素的出現次數，而後得出答案。時

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