Hello,

This may be such a simple question but I can't seem to find the answer in the Discourse or documentation.

I am just trying to pop out an element form an array but I can't use shorten() because I want to extract an element from the middle and I can't use subset() because it doesn't change the source array and I don't only want that element, I want to get it out from the array so I can repeat the process.

In a nutshell this is what I want to do:

int[] count = {1, 2, 3};
/***** some sort of function to take out the number 2, like *****/
count = remove(count, 1, 1);

print(count); // Prints "1" "3"

Sort of like the splice() method in Actionscript where you can take out elements from an array by providing the index and count of elements to be deleted.

subset() gives me the elements I want but it doesn't modify the original array, I want to get the opposite of subset().

I guess I could subset the first half, and then append the second half with another subset to the same array but there has to be a direct way, like a method I am just not finding.

Thanks you in advance!

Fernando Toledo

Hey Cedric,

Thank you for the quick response.

I am using an ArrayList now however I ran into a little problem, since the ArrayList is an object, I can't use it's get method to pass an int into a class. How could I datatype what myArrayList.get(0) returns into an int?

Thank you!

True, it's not working for me either... Lot's if syntax errors heh.

Anyway in the end I separated it into 2 processes, it seems silly but it works, I basically take the first half, then the second half minus the middle element and then concatenate them together  

Like this:

Code:

// Instantiate the array
int[] myCountingArray = new int[100];

// Just as an example I'll populate
// the array with numbers from 1 to 100
for (int i = 0; i < 100; i++){
  myCountingArray[i] = i + 1;
}

// then let's say I want to get the middle element
// instantiate two temp arrays
int[] firstHalf = new int[100];
int[] secondHalf = new int[100];

// subset the first half of the array into the firstHalf array
firstHalf = subset(myCountingArray, 0, round(myCountingArray.length / 2));

// subset the second half (minus the middle element) to the secondHalf array
secondHalf = subset(myCountingArray, round(myCountingArray.length / 2) + 1);

// concatenate both
myCountingArray = concat(firstHalf, secondHalf);
 

The same process can be applied to extract any element really, just instead of using the length/2 it would be replaced with the index of the element we want to extract - 1 on the first subset and then the index on the second subset...

I'm not saying I reinvented the wheel, I'm just merely trying to point out that what I did seems silly but it's the only way I found to do a simple task as removing a desired element from an array (that isn't the last element).

There's probably a quicker and more straightforward solution, hope anyone can share it.

Quote:


Thank you! Using this approach I can use the remove() method directly in the ArrayList and still be able to cast an int value into a custom class