How to Flatten a Nested List in Java - HowToDoInJava
https://howtodoinjava.com/java/collections/arraylist/flatten-nested-lists/
WebJan 13, 2023 · List of nested lists: [[4, 5, 2], [1, 34, 23], [12], [10, 11, 15]]; Flattened List: [4, 5, 2, 1, 34, 23, 12, 10, 11, 15]; We use the following nested list in each solution for demo purposes. List<List<String>> nestedList = List.of( List.of("Alexandru", "John"), List.of("Emma","Andrew", "Luke"), List.of("Oliver"));
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