Agoda Interview Question: Write a function to filter alphanumeric characters from string. How would you test it? Why you didn't use regular expression? | Glassdoor

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Agoda Senior Software Engineer interview

Agoda interview question

Senior Software Engineer Interview

Write a function to filter alphanumeric characters from string. How would you test it? Why you didn't use regular expression?

Interview Answers

Anonymous

24 Jan 2017

I created a simple function which keeps check on ASCII values for each character to filter it out.

Anonymous

24 Jan 2019

String s = "AZabc1253.6789/'[paz`!@#$%^&*()"; String filter = s.replaceAll("[^0-9a-zA-Z_]", ""); System.out.print(filter);

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