JCH
Java Community | Help. Code. Learn.•13mo ago
Steadhaven

Return middle 3 characters from string length greater than 3

    /**
     * Given a string of odd length, return the middle 3 characters from the string,
     * so the string <b>"Monitor"</b> yields <b>"nit"</b>.
     * If the string length is less than 3, return the string as is. <br>
     * <br>
     * 
     * <b>EXPECTATIONS:</b><br>
     * middleThree("bunny") <b>---></b> "unn" <br>
     * middleThree("peter") <b>---></b> "ete" <br>
     * middleThree("Jamaica") <b>---></b>"mai" <br>
     */

    public static String middleThree(String str) {
        if (str.length() < 3)
            return str;
        String result = str.substring((str.length() / 2) - 1, (str.length() / 2) + 2);
        return result;
    }
    /**
     * Given a string of odd length, return the middle 3 characters from the string,
     * so the string <b>"Monitor"</b> yields <b>"nit"</b>.
     * If the string length is less than 3, return the string as is. <br>
     * <br>
     * 
     * <b>EXPECTATIONS:</b><br>
     * middleThree("bunny") <b>---></b> "unn" <br>
     * middleThree("peter") <b>---></b> "ete" <br>
     * middleThree("Jamaica") <b>---></b>"mai" <br>
     */

    public static String middleThree(String str) {
        if (str.length() < 3)
            return str;
        String result = str.substring((str.length() / 2) - 1, (str.length() / 2) + 2);
        return result;
    }
How is my implementation of the middleThree? This is the only solution I could come up with.
5 Replies
JavaBot
JavaBot•13mo ago
⌛ This post has been reserved for your question.
Hey @Steadhaven! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.
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noComment | Kez
noComment | Kez•13mo ago
I'm not too sure but to me it looks like this would only work with odd length strings. ./run 
    String str = "Evennumber";
    String result = str.substring((str.length() / 2) - 1, (str.length() / 2) + 2);
    System.out.println(result);
    String str = "Evennumber";
    String result = str.substring((str.length() / 2) - 1, (str.length() / 2) + 2);
    System.out.println(result);
I Run Code
I Run Code•13mo ago
Here is your java(15.0.2) output @noComment | Kez 
num
num
noComment | Kez
noComment | Kez•13mo ago
okay nevermind I guess the code is quite solid, I think it's readable and if you are better at java than me (like most people) you wouldn't think there is anything wrong with it.
JavaBot
JavaBot•13mo ago
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