edu.emory.mathcs.csparsej.tdouble

Class Dcs_pinv

java.lang.Object

edu.emory.mathcs.csparsej.tdouble.Dcs_pinv

public class Dcs_pinv
extends java.lang.Object

Invert a permutation vector.

Constructor Summary

Constructors

Constructor and Description
Dcs_pinv()

Method Summary

Modifier and Type	Method and Description
static int[]	cs_pinv(int[] p, int n) Inverts a permutation vector.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Dcs_pinv

public Dcs_pinv()

Method Detail

cs_pinv

public static int[] cs_pinv(int[] p,
                            int n)

Inverts a permutation vector. Returns pinv[i] = k if p[k] = i on input.

Parameters:

p - a permutation vector if length n

n - length of p

Returns:

pinv, null on error