使用定制的NSMutableDictionary方法对NSMutableArray排序

首先，给NSMutableDictionary建一个分类，里面加上自定义的排序方法。

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头文件：

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{    Age = 26;    Name = Michael;},{    Age = 32;    Name = Josh;},{    Age = 24;    Name = Eric;},{    Age = 25;    Name = Emilla;},{    Age = 22;    Name = Echo;}

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