teko_test1.go

teko_test1.go

package main

import (
	"fmt"
	"sort"
)

func main() {
	var (
		req = []string{"812", "82", "7", "23", "12", "34"}
	)
	sort.Slice(req, func(a, b int) bool {
		return req[a] == min(req[a], req[b])
	})

	fmt.Println(req)

	for i := 0; i < len(req); i++ {
		fmt.Print(req[len(req)-i-1])
	}
}

func min(a, b string) string {
	var (
		minLength int
	)
	if len(a) < len(b) {
		minLength = len(a)
	} else {
		minLength = len(b)
	}

	for i := 0; i < minLength; i++ {
		if a[i] < b[i] {
			return a
		}
		if a[i] > b[i] {
			return b
		}
	}

	if len(a) < len(b) {
		return a
	}
	return b
}