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Editorial Team
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Asked: 2026-06-11T08:29:18+00:00

I have map where each key is a String. To access a value I

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I have map where each key is a String.

To access a value I can use the .get method of Map. If I want to return anything that matches the key for example : "one, onetwo, onetwothree" , get all values that contain the String "two" so in this case return "onetwo, onetwothree". Is this possible using a Map ?

Im currently using a List and iterating over each String and checking if the String contains the value I am searching for.

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1 Answer

  1. Editorial Team

    There is no such method on any of the Map classes (afaik). You can iterate the keys then check the containment of the fragment, or use a completely different data structure. A trie-map would do it I guess.

    Edit:
    What you currently doing should be just fine for 99% of all cases. If you are processing extreme amounts of data, use full text indexing. (Which can be done with Suffix trees)

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