This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.

# Ordering

 Ordering[list]gives the positions in list at which each successive element of Sort[list] appears. Orderinggives the positions in list at which the first n elements of Sort[list] appear. Ordering gives the positions of the last n elements of Sort[list]. Orderinguses Sort.
• In a numerical list Ordering gives the positions of the n smallest elements. Ordering gives the positions of the n largest elements.
• If there are several smallest elements in list, Ordering will give only the position of the one that appears first.
• is the same as Sort[list].
• Ordering[list, All, p] gives the position at which all elements of list appear in Sort.
• Ordering can be used on expressions with any head, not only List.
Find the ordering that sorts a list:
Apply the ordering:
Find the positions of the 4 smallest elements in a list:
Find the position of the largest element:
Find the ordering that sorts a list:
 Out[1]=
Apply the ordering:
 Out[2]=

Find the positions of the 4 smallest elements in a list:
 Out[1]=

Find the position of the largest element:
 Out[1]=
 Scope   (2)
Find positions of elements from the 4 smallest to the largest:
Find positions of elements in Sort[list, Greater]: