sort a slice by weight descending

sort.go

package main

import (
	"fmt"
	"sort"
)

type node struct {
	weight int
}

func main() {
	var nodes []node
	n1 := node{weight: 0}
	n2 := node{weight: 0}
	n3 := node{weight: 326}
	n4 := node{weight: 4}

	nodes = append(nodes, n1)
	nodes = append(nodes, n2)
	nodes = append(nodes, n3)
	nodes = append(nodes, n4)
	
	fmt.Println(nodes)
	
	sort.Slice(nodes, func(j, k int) bool { return nodes[j].weight > nodes[k].weight })

	fmt.Println(nodes)
}