Given a dictionary d$,$ that contains employee information in the format $\{$employee$\_$id:

$\{\text{'}$name$\text{'}$: name, 'position': position, 'department': department$\}\},$ returns a

new dictionary with the employee information by department using the format $\{$department:

$[\{\text{'}$emp$\_$id$\text{'}$: employee$\_$id$,$ 'name': name, 'position': position$\},\{\text{'}$emp$\_$id$\text{'}$:

employee$\_$id$,$ 'name': name, 'position': position$\}]\}.$ Note that employee id

becomes the key and it disappears as a value in the inner dictionary. Do not mutate $($change$)$ the

original dictionary.

Preconditions and Postconditions

d: dict with format $\{$employee$\_$id: $\{\text{'}$name$\text{'}$: name, 'position': position,

'department': department$\},...\}$

Returns: dict with format $\{$department: $[\{\text{'}$emp$\_$id$\text{'}$: employee$\_$id$,$ 'name': name,

'position': position$\},\{\text{'}$emp$\_$id$\text{'}$: employee$\_$id$,$ 'name': name, 'position':

position$\}],...$