I solved task but there is some strange situation

Question about the task

Read online about the median of a sample

Resolved

I have passed task but when I tested my code I had wrong output. If you run code from below you will get results like there was no sort(test); command. Can some one explain why is this happening ?

Integer[] test = {13, 8, 15, 5, 17};

sort(test);

for (int i = 0; i < test.length; i++) {

    System.out.print(test[i] + ";  ");

}

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Guadalupe Gagnon

Level 37 , Tampa, United States

21 February 2021, 15:56

so... what is your code in the sort method?

Guadalupe Gagnon

Level 37 , Tampa, United States

21 February 2021, 16:10

solution

If i were to guess you probably created a temp array in the sort method and returned that, which satisfies the task conditions. You would have to do:

test = sort(test);

to see the correct results in the main method.

Goran

Level 41 , Belgrade, Serbia

23 February 2021, 11:09

Damn you are wright, now I see my error. I did sort but didn't assign it to any variable, so when I print it on screen I am getting old variable with out sorting. Thanks man, I was losing my mind what is happening :)

Guadalupe Gagnon

Level 37 , Tampa, United States

23 February 2021, 14:36

useful

It's called "pointer aliasing". We don't call them pointers in java, instead we use the term "reference", but the behavior as it relates to aliasing is the same. It definitely had me frustrated on a few tasks before understanding how it works. Here is some reading on it if you are interested: wiki link: Pointer Aliasing Pointers vs References