let arr = [ { "name":"www", "time":110 },
{ "name":"aaa", "time":180 },
{ "name":"aaa", "time":220 },
{ "name":"ddd", "time":30 },
{ "name":"aaa", "time":190 },
{ "name":"www", "time":80 },
{ "name":"www", "time":90 },
{ "name":"aaa", "time":220 },
{ "name":"bbb", "time":60 },
];
去重数组的name并且计算相同name的次数，过滤相同name时time的最大值，
输出实例：[ {"name":"www","time":110,"count":3}, {"name":"aaa","time":220,"count":3}, {"name":"ddd","time":30,"count":1}
{"name":"bbb","time":60,"count":1}]
{ "name":"aaa", "time":180 },
{ "name":"aaa", "time":220 },
{ "name":"ddd", "time":30 },
{ "name":"aaa", "time":190 },
{ "name":"www", "time":80 },
{ "name":"www", "time":90 },
{ "name":"aaa", "time":220 },
{ "name":"bbb", "time":60 },
];
去重数组的name并且计算相同name的次数，过滤相同name时time的最大值，
输出实例：[ {"name":"www","time":110,"count":3}, {"name":"aaa","time":220,"count":3}, {"name":"ddd","time":30,"count":1}
{"name":"bbb","time":60,"count":1}]
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