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Millist mõju võib avaldada elementide liigutamine ArrayListis?

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Vastus AI-lt

Moving elements within an ArrayList in Java affects performance because inserting or removing elements in the middle of the list causes subsequent elements to shift to maintain order. This means that insert and delete operations in the middle of the list have a time complexity of O(n), where n is the number of elements after the insertion/deletion position. Therefore, frequent movements of elements can lead to decreased performance, especially in large lists.

Example:

ArrayList<String> list = new ArrayList<>();
list.add("A");
list.add("B");
list.add("C");
// Insert in the middle
list.add(1, "X"); // elements with index >=1 shift to the right