Frage im Vorstellungsgespräch bei Microsoft
Here is a string with duplicate characters in java. Remove the duplicate characters. Return value is a string
Antwort im Vorstellungsgespräch
Anonym
10. März 2011
You can use a hashtable for this -- if you find any collisions, (i.e., if hashtable.contains(character at position i in a for loop), then don't add that character to your new string. There are plenty of less-efficient ways to do this, but the hashtable answer is what I used for making it more efficient.
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