Getting Indices from an Array of Number

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 11:02:30 GMT

Thank you for sharing this.

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 09:54:18 GMT

Woah, I didn't know this. Thank you so much!

RE: Getting Indices from an Array of Number

nasirs4970 — Thu, 15 Feb 2024 08:57:04 GMT

Code

a!localVariables(
  local!a:100,
  local!array:{5,100,15,100,25},
  reject(
    fn!isnull,
    a!forEach(
    items: local!array,
    expression: a!localVariables(
      local!Boolean:if(
        fv!isFirst,
        {fv!item<100},
        a!forEach(
          items: enumerate(fv!index-1)+1,
          expression: local!a-sum(index(local!array,enumerate(fv!item)+1,0))>0
        )
      ),
      local!currentItem:fv!item,
      local!BooleanSum:if(
        fv!isFirst,
        0,
        sum(a!forEach(
        items: local!Boolean,
        expression: if(
          fv!item,
          index(local!array,fv!index,{}),
          0
        )
      ))
      ),
      if(
        local!a-sum(local!BooleanSum,local!currentItem)>0,
        fv!index,
        null()
      )
    )
  )
  )
)

result

RE: Getting Indices from an Array of Number

Stefan Helzle — Thu, 15 Feb 2024 08:43:01 GMT

I think this calls for a recursive approach. I wrote a blog post about implementing algorithms in Appian.

https://appian.rocks/2022/08/29/complex-algorithms-in-appian/

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 08:15:19 GMT

Test Case 1: {1, 2, 5}

Test Case 2: {1, 2, 4}

RE: Getting Indices from an Array of Number

Harshmodi — Thu, 15 Feb 2024 06:54:15 GMT

Hey,

Could you please provide me the output of these test cases to enhance my understanding?

Initial Value: 100 for both cases.

Test Case 1:

[10, 5,100, 90, 25]

Test Case 2:

[5, 5, 100, 90, 10]

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 06:01:11 GMT

For the 5th iteration, we want the 4th item to be removed from the list to add, since having it would make the initial value negative. So for 5th iteration the value of sum should be 55 - the summation of indices 1, 2, 3,and 5 excluding 4.

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 05:57:23 GMT

But for iteration 4, the sum would be 130. So 100 - 130 would make the local!initialValue negative.

RE: Getting Indices from an Array of Number

Dabs Medina — Thu, 15 Feb 2024 05:55:22 GMT

Let's say for iteration 3, we are indexing item 1, 2, and 3 from the local!numberList, which value is {5, 10, 15, 100, 25}, so the value that the sum() function would return in this iteration is 30. 100 - 30 = 70, so in this case the index should be returned.

RE: Getting Indices from an Array of Number

Boddupalli Bhargav — Thu, 15 Feb 2024 05:50:25 GMT

Can you ellobrate what does added together means?