23 lines
477 B
Java
23 lines
477 B
Java
import java.util.LinkedList;
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import java.util.List;
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public final class FlattenUtil {
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public static List<Object> flatten(List<?> list) {
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List<Object> retVal = new LinkedList<Object>();
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flatten(list, retVal);
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return retVal;
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}
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public static void flatten(List<?> fromTreeList, List<Object> toFlatList) {
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for (Object item : fromTreeList) {
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if (item instanceof List<?>) {
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flatten((List<?>) item, toFlatList);
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} else {
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toFlatList.add(item);
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}
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}
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}
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}
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