array elements equal to each other?

[ThijsBoeree]

Hi,

Maybe a very simple question but i haven't found the answer here...

I have a 1D Array with let's say 4 elements, and if all elements are equal to each other

(1,1,1,1)  then it should return true

if one element is other then the rest

(1,2,1,1)  it should return false...

How to build this simple?

Best regards,

Thijs

[ThijsBoeree]

I got this thus far...?

But maybe there is something more simple?

regards,

Thijs

[GerdW]

Hi Thijs,

you need to compare one element of the array with the remaining ones:

To your own approach:

- RubeGoldberg due to indexing the same element of the array in each iteration

- RubeGoldberg due to using a loop where polymorphism will do the same

- wrong labeling of the output: you need to AND all booleans, but not ORing them

- the AutoCleanup tool is pretty good at such small snippets…

😄

[ThijsBoeree]

Nice,

But i came to realise that there's a bigger challenge:

Input1: 1D array of elements (all elements)

Input2: 1D array of elements consisting of 2 elements which are allowed. 

Output: True if the two elements are in the array or if all the elements are equal

Output: False if the two elements are not in the array.

Input1: (1,1,2,1,1)

Input2: (1,2)

Output: True 

Input1: (1,1,2,1,3)

Input2: (1,2)

Output: False

Input1: (1,1,1,1,1)

Input2: (1,2)

Output: True

Best regards,

Thijs

[GerdW · Accepted solution]

Hi Thijs,

so you need to compare if each element of array1 is a member of array2:

Did I get this right?

Edit: the label of the output should be just "all elements of array are members of array2"

[ThijsBoeree]

Wow that's fast.

Thanks!

[GerdW]

Hi Thijs

---

Output: True if the two elements are in the array or if all the elements are equal

---

This is not clearly defined. What happens when array1 consist just of zeros and array2 contains [1, 2]? Giving your description you want output=TRUE (all elements are equal!) - my snippet will produce FALSE in this case...

Either redefine your question or modify my snippet! 😄

[ThijsBoeree]

Then my question was not right defined, because it works perfectly!

Regards