Interview Questions and Answers for 'Match' | Search Interview Question

Interview Questions and Answers for 'Match' - 4 question(s) found - Order By Newest

Q1. What's wrong with this code ?

public static void main(String[] args) {
String regex = "(\\w+)*";
String s = "Java is a programming language.";

Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(s);
while (matcher.next()) {
System.out.println("The e-mail id is: " + matcher.group());
}
}

Core Java

Ans. matcher.find() should have been used instead of matcher.next() within while.

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_{Like Discuss Correct / Improve java regex pattern.matcher java.util coding code}

Q2. Given a string and index for the opening bracket, find the index of matching closing bracket.

Core Java

^{This question was recently asked at 'Amazon'.This question is still unanswered. Can you please provide an answer.}

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_{Like Discuss Correct / Improve matching bracket stack Asked in 1 Companies}

Q3. Write code to sort an array.

Algorithm

Ans. https://www.geeksforgeeks.org/arrays-sort-in-java-with-examples/

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_{Like Discuss Correct / Improve array sorting Asked in 16 Companies basic frequent}

Q4. If you have to pull a sub string out of a string, which method would you use - using String methods or Pattern / Matcher ?

Design

Ans. It depends on how complex it is and if in future it would need any sort opf debugging. It's not easy to debug code if it's making heavy use of shortcuts like Lambda , Patterns etc.

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_{Like Discuss Correct / Improve pattern matching String design}

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