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!585 ✨ add comparingIndexed method to CompareUtil.

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Merge pull request !585 from Hacker/v5-dev
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Looly 2022-03-25 16:16:40 +00:00 committed by Gitee
commit 8b13c06123
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hutool-core/src/main/java/cn/hutool/core/comparator/CompareUtil.java
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@ -152,4 +152,35 @@ public class CompareUtil {
}
return (o1, o2) -> pinyinComparator.compare(keyExtractor.apply(o1), keyExtractor.apply(o2));
}
/**
* 索引比较器
*
* @param keyExtractor 从对象中提取中文(参与比较的内容)
* @param objs 参与排序的数组，数组的元素位置决定了对象的排序先后
* @param <T> 对象类型
* @param <U> 数组对象类型
* @return 索引比较器
* @since 5.8.0
*/
public static <T, U> Comparator<T> comparingIndexed(Function<? super T, ? extends U> keyExtractor, U... objs) {
return comparingIndexed(keyExtractor, false, objs);
}
/**
* 索引比较器
*
* @param keyExtractor 从对象中提取排序键的函数(参与比较的内容)
* @param atEndIfMiss 如果不在列表中是否排在后边
* @param objs 参与排序的数组，数组的元素位置决定了对象的排序先后
* @param <T> 对象类型
* @param <U> 数组对象类型
* @return 索引比较器
* @since 5.8.0
*/
public static <T, U> Comparator<T> comparingIndexed(Function<? super T, ? extends U> keyExtractor, boolean atEndIfMiss, U... objs) {
Objects.requireNonNull(keyExtractor);
IndexedComparator<U> indexedComparator = new IndexedComparator<>(atEndIfMiss, objs);
return (o1, o2) -> indexedComparator.compare(keyExtractor.apply(o1), keyExtractor.apply(o2));
}
}