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fix comment
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@ -93,8 +93,7 @@ public class CollStreamUtil {
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}
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/**
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* 将collection按照两个规则(比如有相同的年级id,班级id)分类成双层map
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* <br></br>
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* 将collection按照两个规则(比如有相同的年级id,班级id)分类成双层map<br>
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* <B>{@code Collection<E> ---> Map<T,Map<U,E>> } </B>
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*
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* @param collection 需要分类的集合
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