Pegasystems Interview Question: How do you check whether String contains any duplicate characters?

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Pegasystems Senior Software Development Engineer In Test interview

Pegasystems interview question

Senior Software Development Engineer In Test Interview

How do you check whether String contains any duplicate characters?

Interview Answers

Anonymous

May 10, 2015

I answered him by saying Get a byte array and Get each character of String, Convert it to ASCII number and mark the position of byte array as that of ASCII number

Anonymous

Jul 1, 2018

var inputValue = "aabcdefgghi" ; var result = OnlyOnceCheck(inputValue); Console.WriteLine(result.ToString()); public static bool OnlyOnceCheck(string input) { return input.GroupBy(x => x).Any(g => g.Count() > 1); }

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Pegasystems interview question

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