Split, reorder, concat inline

I want to split a cell, reorder the pieces and recombine.

How do I do that inline?

For example:

| name        | reordered name |
| Page,Larry  | Larry Page     |
| Brin,Sergey | Sergey Brin    |

How can I do this?

I know that:

=SPLIT(A2, ",")

will split the values into the next two columns and I know that I can concatenate values with:

=CONCATENATE(A2, " ", B2)

How do I bring these things together in a single formula?

Can I access the values from SPLIT and reorder them?

I know I can do:

=CONCATENATE(SPLIT(A2))

(but obviously that is stupid).

In Ruby I would just do something like:

def reorder_name(cell)
  names = cell.split(",")
  "#{names[1]} #{names[0]}"
end

In Google Apps Script, a custom function like this would work:

function reorder_name(cell) {
  var names = cell.split(",");
  return names[1] + ' ' + names[2];
}

If you've got Lastname, Firstname in A1, this spreadsheet function will render Firstname Lastname:

=TRIM(MID(A1,FIND(",",A1)+1,50)) &" " &TRIM(LEFT(A1,FIND(",",A1)-1))

If you want to go from Firstname Lastname to Lastname, Firstname:

=TRIM(MID(A1,FIND(" ",A1)+1,50)) &", " &TRIM(LEFT(A1,FIND(" ",A1)-1))

Shorter formula version:

=index(split(A1,","),,2)&" "&index(split(A1,","),,1)

来源：https://stackoverflow.com/questions/18704431/split-reorder-concat-inline

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