how to find how many times does an object comes in an arraylist

Crazy Cassowary answered on April 6, 2021 Popularity 2/10 Helpfulness 1/10

answer how to find how many times does an object comes in an arraylist

how to find how many times does an object comes in an arraylist

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List<String> arr = Arrays.asList("a", "a", "b", "a", "a");

Set<String> printed = new HashSet<>();
for (String s : arr) {
    if (printed.add(s)) // Set.add() also tells if the element was in the Set!
        System.out.println("element: " + s
            + ", count: " + Collections.frequency(arr, s));
}

Popularity 2/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: arraylist find object whatever

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Contributed on Apr 06 2021

Crazy Cassowary

0 Answers Avg Quality 2/10

how to find how many times does an object comes in an arraylist

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