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I have two array lists e.g.
List<Date> a; contains : 10/10/2014, 10/11/2016 List<Date> b; contains : 10/10/2016 How can i do a check between list a and b so the value that is missing in b is returned?e.g. 10/10/2014
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Method 6: Use symmetric_difference to Find the Difference Between Two Lists in Python. The elements that are either in the first set or the second set are returned using the symmetric_difference() technique. The intersection, unlike the shared items of the two sets, is not returned by this technique.
Using the Java List API. We can create a copy of one list and then remove all the elements common with the other using the List method removeAll(): List<String> differences = new ArrayList<>(listOne); differences. removeAll(listTwo); assertEquals(2, differences.
Use Numpy to Subtract Two Python Lists One of the methods that numpy provides is the subtract() method. The method takes two numpy array s as input and provides element-wise subtractions between the two lists.
You can convert them to Set collections, and perform a set difference operation on them.
Like this:
Set<Date> ad = new HashSet<Date>(a); Set<Date> bd = new HashSet<Date>(b); ad.removeAll(bd); If you only want find missing values in b, you can do:
List toReturn = new ArrayList(a); toReturn.removeAll(b); return toReturn; If you want to find out values which are present in either list you can execute upper code twice. With changed lists.
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