题解 | #数组中出现次数超过一半的数字#

function MoreThanHalfNum_Solution(numbers)
{
    // write code here
    let result=numbers.reduce((temp,data)=>{
        temp[data]=temp[data]?temp[data]+1:1;
        return temp;
    },{})
    let num;
    for(let index in result){
        if(result[index]>numbers.length/2){
            num=index;
        }
    } 
    return num;
}
module.exports = {
    MoreThanHalfNum_Solution : MoreThanHalfNum_Solution
};

reduce函数累加