vid-app-common/src/main/java/org/onap/vid/utils/Intersection.java

   1 package org.onap.vid.utils;
   2
   3 import java.util.List;
   4 import java.util.stream.Collectors;
   5
   6 /**
   7  * Created by moriya1 on 10/10/2017.
   8  */
   9 public class Intersection<T> {
  10     public List<T> intersectMultipileArray(List<List<T>> lists) {
  11         if (lists.size() == 1) {
  12             return lists.get(0);
  13         } else {
  14             List<T> intersectResult = intersectTwoArrays(lists.get(0),lists.get(1));
  15
  16             lists.remove(0);
  17             lists.remove(0);
  18             lists.add(0,intersectResult);
  19             return intersectMultipileArray(lists);
  20         }
  21
  22     }
  23
  24     public List<T> intersectTwoArrays(List<T> list1, List<T> list2) {
  25
  26         List<T> intersect = list1.stream()
  27                 .filter(list2::contains)
  28                 .collect(Collectors.toList());
  29         return intersect;
  30     }
  31 }