JAVA : remove duplicates from Array with pattern

Question

I am new to Java, With respect to this question remove same values from an array How can we achieve it using java. Any help would be greatly appreciated?

Actually a HashSet would be the way to go for a list of Strings. Though nallar is right. This has been answered before. — Craig, Aug 14 '15 at 11:18

score 2 · Answer 1 · answered Aug 14 '15 at 11:20

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You could use a Set (e.g. HashSet), or a Map (e.g. HashMap). For each value in the array, just place it in the Set (or as a key in the Map).

You will then have a collection without duplicates (you can transform it back to an array if you need).

answered Aug 14 '15 at 11:20

Alexey

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score 0 · Answer 2 · edited Sep 03 '15 at 17:27

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Actually, you should use HashSet, it will remove duplicate values.

For sorting, you should use TreeSet.

edited Sep 03 '15 at 17:27

leo.fcx

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answered Aug 14 '15 at 11:35

arti

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score 0 · Answer 3 · answered Aug 14 '15 at 11:35

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You can achieve this simply by using the collections.

use set or HashMap and put the elements in the collections. when you retrieve you will get the unique elements .

If you are looking for pattern matching... better for the RegEx.

answered Aug 14 '15 at 11:35

Shailej Shimpi

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JAVA : remove duplicates from Array with pattern

3 Answers3