What sorting method is used in the solution?

The solution typically uses merge sort or quick sort, as they provide good performance and stability.

In Go, the standard library sort uses a hybrid algorithm based on merge sort and insertion sort (introsort), which adapts to different cases for optimal speed.

Example of sorting a slice of integers in Go:

package main

import (
    "fmt"
    "sort"
)

func main() {
    nums := []int{5, 3, 6, 2, 10}
    sort.Ints(nums)
    fmt.Println(nums) // [2 3 5 6 10]
}