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Asked: 2026-05-10T14:30:39+00:00

When interviewing college coops/interns or recent graduates it helps to have a Java programming

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When interviewing college coops/interns or recent graduates it helps to have a Java programming question that they can do on a white board in 15 minutes. Does anyone have examples of good questions like this? A C++ question I was once asked in an interview was to write a string to integer function which is along the lines of the level of question I am looking for examples of.

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  1. Some stuff that has showed up on SO:

    • IsPalindrome(string s)
    • ReverseWordsInString(string s): ‘I know java’ –> ‘java know I’

    Other stuff that springs to mind:

    • multiply a Vector with a Matrix (can this be done OO-Style?)
    • echo (yes, a simple clone of the unix tool)
    • cat (15 min should be enough, should weed out the clueless)
    • a simple container for ints. Like ArrayList. Bonus question: Generic?
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