Packages

c

scalation.util

MergeSortIndirect

class MergeSortIndirect extends AnyRef

The MergeSortIndirect class provides an implementation of Indirect Merge Sort, a version of mergesort that does not re-arrange the array, but modifies an Int array called 'perm' such that 'perm(i)' is the index of the i-th smallest entry in the array (i.e., a(perm(i)) <= a(perm(i+1)). The 'isort' method returns the permutation that sorts array 'a' in 'perm'. Will indirectly sort any type supported by the Vec_Elem less-than operator.

See also

scalation.linalgebra.Vec_Elem

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Instance Constructors

  1. new MergeSortIndirect(a: Array[Any])(perm: Array[Int] = Array.range (0, a.length))

    a

    the array to be indirectly sorted

    perm

    the initial permutation, either 0 until a.length or result of last isort

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  11. def isort(): Array[Int]

    Indirectly sort the array 'a' by updating the permutation array 'perm'.

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