diff options
Diffstat (limited to 'vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java')
-rw-r--r-- | vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java b/vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java new file mode 100644 index 00000000..6e0d1fc2 --- /dev/null +++ b/vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java @@ -0,0 +1,31 @@ +package org.onap.vid.utils; + +import java.util.List; +import java.util.stream.Collectors; + +/** + * Created by moriya1 on 10/10/2017. + */ +public class Intersection<T> { + public List<T> intersectMultipileArray(List<List<T>> lists) { + if (lists.size() == 1) { + return lists.get(0); + } else { + List<T> intersectResult = intersectTwoArrays(lists.get(0),lists.get(1)); + + lists.remove(0); + lists.remove(0); + lists.add(0,intersectResult); + return intersectMultipileArray(lists); + } + + } + + public List<T> intersectTwoArrays(List<T> list1, List<T> list2) { + + List<T> intersect = list1.stream() + .filter(list2::contains) + .collect(Collectors.toList()); + return intersect; + } +} |