apoc.coll.containsDuplicates

Details
Syntax	`apoc.coll.containsDuplicates(coll)`
Description	Returns true if a collection contains duplicate elements.
Arguments	Name	Type	Description
	`coll`	`LIST<ANY>`	The list to check for duplicates in.
Returns	`BOOLEAN`

Usage examples

The following indicates whether a list contains duplicate values:

RETURN apoc.coll.containsDuplicates([1,3,5,7,9,9]) AS output;

Results
Output
true