Description of inv

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inv

PURPOSE

inv(p) returns the inverse permutation of p

SYNOPSIS

function q = inv(p)

DESCRIPTION

 inv(p) returns the inverse permutation of p

CROSS-REFERENCE INFORMATION

This function calls:

• array array(p) --- return p as an array
• permutation constructor for the permutation class

This function is called by:

• mpower p^t is p multiplied by itself t times. May have t <= 0.

SOURCE CODE

0001 function q = inv(p)
0002 % inv(p) returns the inverse permutation of p
0003 a = array(p);
0004 [y,b] = sort(a);
0005 q = permutation(b);

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