unordered_map
数组中出现次数超过一半的数字
http://www.nowcoder.com/questionTerminal/e8a1b01a2df14cb2b228b30ee6a92163
class Solution {
public:
int MoreThanHalfNum_Solution(vector<int> numbers) {
unordered_map<int, int> m;
int size = numbers.size();
for(int i=0;i<size;i++){
m[numbers[i]]++;
if(m[numbers[i]]>size/2) return numbers[i];
}
return 0;
}
}; 
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