Question

How to sort by numbers a mixed pair of string and number elements in a slice with Go

Answer 1

package main

import (
    "fmt"
    "sort"
    "strconv"
    "strings"
)

func extractNumber(s string) int {
    pos := strings.LastIndex(s, " ")
    n, _ := strconv.Atoi(s[pos + 1:])
    
    return n
}

func main() {
    slice := []string{
        "Python 4", "C 9", "C++ 5", "C# 6",
        "Java 1", "PHP 7", "Go 2",
    }

    sort.Slice(slice, func(i, j int) bool {
        return extractNumber(slice[i]) < extractNumber(slice[j])
    })

    fmt.Println(slice)
}



/*
run:

[Java 1 Go 2 Python 4 C++ 5 C# 6 PHP 7 C 9]

*/

 

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