gods/utils/sort.go

/*
Copyright (c) 2015, Emir Pasic
All rights reserved.

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modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
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  and/or other materials provided with the distribution.

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*/

// Util methods for sorting a slice of values with respect to the comparator

package utils

import "sort"

// Sort sorts values (in-place)
// Uses Go's sort (hybrid of quicksort for large and then insertion sort for smaller slices)
func Sort(values []interface{}, comparator Comparator) {
	sort.Sort(sortable{values, comparator})
}

type sortable struct {
	values     []interface{}
	comparator Comparator
}

func (s sortable) Len() int {
	return len(s.values)
}
func (s sortable) Swap(i, j int) {
	s.values[i], s.values[j] = s.values[j], s.values[i]
}
func (s sortable) Less(i, j int) bool {
	return s.comparator(s.values[i], s.values[j]) < 0
}