func (lop listOfPeers) Swap(i, j int) {
	lop[i], lop[j] = lop[j], lop[i]
}
func (lop listOfPeers) Swap(i, j int) {
	lop[i], lop[j] = lop[j], lop[i]
}
func ( lop listOfPeers ) Swap ( i , j int ) { lop [ i ] , lop [ j ] = lop [ j ] , lop [ i ] }
// Swap implements sort.Interface.
Swap implements sort . Interface .