在golang中排序结构图

Question

我有一张这样的地图

Key: 9970DLXEVOQ0O Value: [{9972IOFNIDER6 0.3},{9972MFYWYJIEK 0.2},{9972QIUUINW6R 0.5}]
Key: 9970DLXEVOQ01 Value: [{9972IOFNIDER6 0.3}]
Key: 9970QYPOYUUIO Value: [{9972VOFA3OJLK 0.4}]

在golang中命名为product_deal,其中key是string,value是struct:

type product_detail struct {
     deal_id string
     rating float64
}

我需要根据输出应该是的每个值字段中的评级(降序)对值进行排序

Key: 9970DLXEVOQ0O Value: [{9972QIUUINW6R 0.5},{9972IOFNIDER6 0.3},{9972MFYWYJIEK 0.2}]
Key: 9970DLXEVOQ01 Value: [{9972IOFNIDER6 0.3}]
Key: 9970QYPOYUUIO Value: [{9972VOFA3OJLK 0.4}]

关于如何做到这一点的任何想法.我确实看过其他帖子哪个排序地图但无法获得实施.任何帮助,将不胜感激.

Answer 1

为了扩展我对原始问题的评论,这是一个可以在Go操场上运行的工作示例.请注意,我可能误解了您想要的类型的结构,但这个想法应该是清楚的.

package main

import "fmt"
import "sort"

type Product struct {
    Id     string
    Rating float64
}

type Deal struct {
    Id       string
    products []Product
}

type Deals []Deal

// Ensure it satisfies sort.Interface
func (d Deals) Len() int           { return len(d) }
func (d Deals) Less(i, j int) bool { return d[i].Id < d[j].Id }
func (d Deals) Swap(i, j int)      { d[i], d[j] = d[j], d[i] }

func main() {
    deals := Deals{
        {"9970DLXEVOQ0O", []Product{{"9972MFYWYJIEK", 0.2}}},
        {"9970DLXEVOQ01", []Product{{"9972IOFNIDER6", 0.3}}},
        {"9970QYPOYUUIO", []Product{{"9972VOFA3OJLK", 0.4}}},
        {"9970DLYKLAO8O", []Product{{"9972IOFNIDER6", 0.3}}},
        {"9970QYPMNAUUI", []Product{{"9972QIUUINW6R", 0.5}}},
    }

    sort.Sort(deals)

    for _, d := range deals {
        fmt.Println(d)
    }
}