### Atom - `ŒĠ`

- Group Multidimensional Indices by Value

Tags: `miscellaneous` , `array` , `number`

##### Arity: monadic

This atom is monadic, which means it takes one argument.

##### Functionality

Group the multidimensional indices of a list by the corresponding values.

##### Details

This returns a list of lists. Each multidimensional index of `z`

will appear exactly once. Two indices are in the same sublist if and only if their corresponding values are equal. The sublists are ordered by the element they correspond to.