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Interview Q&A / Java

INTERVIEW Q&A · 72 QUESTIONS

Java interview questions

Collections, the JVM, strings, exceptions and threads, the backbone of most campus placement rounds.

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  1. Write a Java method that reverses the order of words in a sentence.

    Trim the text, split on one or more spaces, then join the pieces from last to first with a single space. It takes O(n) time and O(n) space for the word array and result.

    BeginnerQuick answerCoding1 min read