There are a variety of ways to remove duplicates from a List in Java. Which one should you use? For the vast majority of use cases, the Stream API’s distinct method should fit the bill. For corner cases that require customization during the deduping process, consider writing your own alg...
Example 3: Removing duplicates using stream distinct() In the following example, we are using the distinct() method ofStream API. This method removes the duplicates from the input stream and returns a new stream after removing duplicate elements. importjava.util.ArrayList;importjava.util.Arrays;imp...
So to remove duplicates we are using two approaches one is converting to HashSet and the second is to use a distinct() method of stream that returns unique elements from a stream. See the examples. Time for an Example: Let's create an example to remove all duplicates from the ArrayList....
they were considered not equal. That’s why it’s very important to implement equals() method if you are planning to use stream distinct() method with custom objects. Note that both equals() and hashCode() methods are used by Collection classes API to check if two objects are equal...
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public static int remove_duplicates(int[] nums) { Map<Integer, Integer> map = new HashMap<>(); for (int i = 0; i < nums.length; i++) { if (map.containsKey(nums[i])) { continue; } else { map.put(nums[i], 1); } } return map.size(); } 1 相关推荐 04-22 16:30 上...
1. UsingStream.distinct()method In Java 8 and above, the recommended solution is to use Stream API to create a new array without duplicates. The idea is to construct a stream from the array elements and get the distinct elements in the stream with thedistinct()method. Then call thetoArray...
This project uses theSpotify Web APIfor managing playlists. Just log in and it will traverse your playlists, finding songs that appear multiple times with the same identifier (Spotify URI) in a given playlist. If it finds duplicates, they can be removed just pushing a button. And since it ...
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