Android Code Snippet [B4X][LOA] ListOfArrays with 1D data

ListOfArrays data structure can be useful even with single dimensional data.
LOA v0.96 adds a helper method for creating such LOAs:

Dim colors As ListOfArrays = LOAUtils.CreateFrom1DList("Color", Array("red", "green", "blue"))

The header is optional. Pass empty string if not needed.

Another new method is ListOfArray.AddColumnWithValue. It adds a new column, filled with the same value.

We have an AI generated list of names:

Dim Names() As String = Array As String( _
    "John", _
    "Emma", _
    "Michael", _
    "Olivia", _
    "Daniel", _
    "Sophia", _
    "James", _
    "Ava", _
    ...
)
    Dim AllNames As ListOfArrays = LOAUtils.CreateFrom1DList("Name", Names)

We want to split this list based on the names' lengths. LOASet, the iterator, is useful for such tasks:

'collect the indices of all rows where the name length is shorter than or equal to 4:
Dim ls As LOASet = AllNames.CreateLOASet
Do While ls.NextRow
    If ls.GetValue(0).As(String).Length <= 4 Then ls.CollectIndex
Loop
'create two collections. One with the collected indices and another with the non-collected indices
Dim ShortNames As ListOfArrays = AllNames.GetRows(ls.CollectedValues)
Dim LongNames As ListOfArrays = AllNames.GetRows(AllNames.NegateRowsSelection(ls.CollectedValues))

Using the new AddColumnWithValue method, we add a new column that will store the lengths:

AllNames.AddColumnWithValue("Length", 0)

Now we iterate over the rows and set the lengths:

Dim ls As LOASet = AllNames.CreateLOASet
Do While ls.NextRow
    Dim Name As String = ls.GetValue("Name")
    'set the length value for each row
    ls.SetValue("Length", Name.Length)
Loop

We can sort the names based on the length column:

AllNames.Sort("Length", True)

And get back a 1d list:

Dim SortedNames As List = AllNames.GetColumn("Name")
Log(SortedNames)

Output:
Name (#rows=4, #cols=1)
-----------------------------
John
Emma
Ava
Mia
Name (#rows=16, #cols=1)
-----------------------------
Michael
Olivia
Daniel
Sophia
James
Name Length (#rows=20, #cols=2)
-----------------------------
Ava 3
Mia 3
John 4
Emma 4
James 5
(ArrayList) [Ava, Mia, John, Emma, James, Lucas, Henry, Ethan, Grace, Olivia, Daniel, Sophia, Amelia, Evelyn, Michael, William, Benjamin, Isabella, Charlotte, Alexander]


Project is attached.