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项目结构：

/* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:03 # User : geovindu # Product : GoLand # Project : goalgorithms # File : bead.go */ package dto // BeadItem 多宝手串珠子实体 type BeadItem struct { BeadID string Name string Material string ColorGroup string // red/green/purple/gold UnitPrice float64 Stock int } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:03 # User : geovindu # Product : GoLand # Project : goalgorithms # File : jewelry.go */ package dto // JewelryItem 成套首饰商品 type JewelryItem struct { SkuID string Name string Category string // necklace / earring / bracelet / ring Material string // Au999 / 18K / S925 Color string Style string Price float64 Stock int HasGem bool } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:04 # User : geovindu # Product : GoLand # Project : goalgorithms # File : bracelet_rule.go */ package rule import "goalgorithms/backtracking/dto" // BraceletRule 手串搭配约束 type BraceletRule struct { MaxSingleColor int } func (r *BraceletRule) Check(item dto.BeadItem, path []dto.BeadItem) bool { // 1.库存校验 used := 0 for _, p := range path { if p.BeadID == item.BeadID { used++ } } if used >= item.Stock { return false } // 2.色系均衡限制 colorCnt := make(map[string]int) for _, b := range path { colorCnt[b.ColorGroup]++ } if colorCnt[item.ColorGroup] >= r.MaxSingleColor { return false } return true } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:04 # User : geovindu # Product : GoLand # Project : goalgorithms # File : scene_jewelry_rule.go */ package rule import "goalgorithms/backtracking/dto" // SceneConfig 场景配置 type SceneConfig struct { AllowMaterial map[string]bool MustGem bool } // SceneJewelryRule 场景首饰规则 type SceneJewelryRule struct { conf SceneConfig } func NewSceneJewelryRule(conf SceneConfig) *SceneJewelryRule { return &SceneJewelryRule{conf: conf} } func (r *SceneJewelryRule) Check(item dto.JewelryItem, path []dto.JewelryItem) bool { if item.Stock <= 0 { return false } if !r.conf.AllowMaterial[item.Material] { return false } if r.conf.MustGem && !item.HasGem { return false } return true } // GetSceneConfig 场景配置中心，新增场景只在这里扩展 func GetSceneConfig(sceneType string) SceneConfig { sceneMap := map[string]SceneConfig{ "wedding": { AllowMaterial: map[string]bool{"Au999": true, "18K": true}, MustGem: true, }, "commute": { AllowMaterial: map[string]bool{"Au999": true, "S925": true, "18K": true}, MustGem: false, }, "dinner": { AllowMaterial: map[string]bool{"18K": true}, MustGem: true, }, } cfg, ok := sceneMap[sceneType] if !ok { return sceneMap["commute"] } return cfg } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:05 # User : geovindu # Product : GoLand # Project : goalgorithms # File : score_util.go */ package common import "goalgorithms/backtracking/dto" // ScoreBraceletScheme 手串方案评分 func ScoreBraceletScheme(scheme []dto.BeadItem) float64 { colorSet := make(map[string]bool) var totalCost float64 for _, b := range scheme { colorSet[b.ColorGroup] = true totalCost += b.UnitPrice } diversity := float64(len(colorSet)) return diversity*10 - totalCost/200 } // ScoreJewelryScheme 成套首饰方案评分 func ScoreJewelryScheme(scheme []dto.JewelryItem) float64 { gemCnt := 0 stockScore := 0 for _, item := range scheme { if item.HasGem { gemCnt++ } if item.Stock < 5 { stockScore += item.Stock } else { stockScore += 5 } } return float64(gemCnt*5 + stockScore) } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:05 # User : geovindu # Product : GoLand # Project : goalgorithms # File : backtrack_bracelet.go */ package core import ( "goalgorithms/backtracking/dto" "goalgorithms/backtracking/rule" ) // BraceletBackTracker 手串回溯器 type BraceletBackTracker struct { beadPool []dto.BeadItem rule *rule.BraceletRule solutions [][]dto.BeadItem } func NewBraceletBackTracker(pool []dto.BeadItem, r *rule.BraceletRule) *BraceletBackTracker { return &BraceletBackTracker{ beadPool: pool, rule: r, } } func (bt *BraceletBackTracker) backtrack(path []dto.BeadItem, remain int, totalCost float64, budget float64) { if remain == 0 { cp := make([]dto.BeadItem, len(path)) copy(cp, path) bt.solutions = append(bt.solutions, cp) return } if totalCost > budget { return } for _, bead := range bt.beadPool { if !bt.rule.Check(bead, path) { continue } path = append(path, bead) bt.backtrack(path, remain-1, totalCost+bead.UnitPrice, budget) path = path[:len(path)-1] } } func (bt *BraceletBackTracker) Run(targetCount int, budget float64) [][]dto.BeadItem { bt.solutions = make([][]dto.BeadItem, 0) bt.backtrack([]dto.BeadItem{}, targetCount, 0.0, budget) return bt.solutions } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:06 # User : geovindu # Product : GoLand # Project : goalgorithms # File : backtrack_jewelry.go */ package core import ( "goalgorithms/backtracking/dto" "goalgorithms/backtracking/rule" ) // JewelrySceneBackTracker 首饰成套回溯器 type JewelrySceneBackTracker struct { goodsPool []dto.JewelryItem rule *rule.SceneJewelryRule solutions [][]dto.JewelryItem } func NewJewelrySceneBackTracker(pool []dto.JewelryItem, r *rule.SceneJewelryRule) *JewelrySceneBackTracker { return &JewelrySceneBackTracker{ goodsPool: pool, rule: r, } } func (bt *JewelrySceneBackTracker) backtrack(startIdx int, selected []dto.JewelryItem, totalPrice float64, budget float64, targetCategories map[string]bool) { // 判断是否集齐目标品类 selectedCats := make(map[string]bool) for _, item := range selected { selectedCats[item.Category] = true } complete := true for cat := range targetCategories { if !selectedCats[cat] { complete = false break } } if complete { cp := make([]dto.JewelryItem, len(selected)) copy(cp, selected) bt.solutions = append(bt.solutions, cp) return } if totalPrice > budget { return } for i := startIdx; i < len(bt.goodsPool); i++ { item := bt.goodsPool[i] if selectedCats[item.Category] { continue } if !bt.rule.Check(item, selected) { continue } selected = append(selected, item) bt.backtrack(i+1, selected, totalPrice+item.Price, budget, targetCategories) selected = selected[:len(selected)-1] } } func (bt *JewelrySceneBackTracker) Run(budget float64, targetCategories map[string]bool) [][]dto.JewelryItem { bt.solutions = make([][]dto.JewelryItem, 0) bt.backtrack(0, []dto.JewelryItem{}, 0.0, budget, targetCategories) return bt.solutions } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:06 # User : geovindu # Product : GoLand # Project : goalgorithms # File : bracelet_service.go */ package service import ( "goalgorithms/backtracking/common" "goalgorithms/backtracking/core" "goalgorithms/backtracking/dto" "goalgorithms/backtracking/rule" "sort" ) // BraceletMatchService 手串搭配业务服务 type BraceletMatchService struct { beadPool []dto.BeadItem } func NewBraceletMatchService(pool []dto.BeadItem) *BraceletMatchService { return &BraceletMatchService{beadPool: pool} } func (svc *BraceletMatchService) Match(targetCount int, budget float64, maxColorLimit int, topN int) [][]dto.BeadItem { r := &rule.BraceletRule{MaxSingleColor: maxColorLimit} tracker := core.NewBraceletBackTracker(svc.beadPool, r) schemes := tracker.Run(targetCount, budget) // 打分排序 sort.Slice(schemes, func(i, j int) bool { return common.ScoreBraceletScheme(schemes[i]) > common.ScoreBraceletScheme(schemes[j]) }) if len(schemes) > topN { schemes = schemes[:topN] } return schemes } /* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:07 # User : geovindu # Product : GoLand # Project : goalgorithms # File : jewelry_scene_service.go */ package service import ( "goalgorithms/backtracking/common" "goalgorithms/backtracking/core" "goalgorithms/backtracking/dto" "goalgorithms/backtracking/rule" "sort" ) // JewelrySceneMatchService 场景首饰搭配服务 type JewelrySceneMatchService struct { goodsPool []dto.JewelryItem } func NewJewelrySceneMatchService(pool []dto.JewelryItem) *JewelrySceneMatchService { return &JewelrySceneMatchService{goodsPool: pool} } func (svc *JewelrySceneMatchService) MatchByScene(scene string, budget float64, targetCategories map[string]bool, topN int) [][]dto.JewelryItem { cfg := rule.GetSceneConfig(scene) r := rule.NewSceneJewelryRule(cfg) tracker := core.NewJewelrySceneBackTracker(svc.goodsPool, r) schemes := tracker.Run(budget, targetCategories) sort.Slice(schemes, func(i, j int) bool { return common.ScoreJewelryScheme(schemes[i]) > common.ScoreJewelryScheme(schemes[j]) }) if len(schemes) > topN { schemes = schemes[:topN] } return schemes }

调用：

/* # 版权所有 2026 ©涂聚文有限公司™ ® # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述：Backtracking Algorithm # Author : geovindu,Geovin Du 涂聚文. # IDE : goLang 2024.3.6 go 26.2 # os : windows 10 # database : mysql 9.0 sql server 2019, postgreSQL 17.0 Oracle 21c Neo4j # Datetime : 2026/7/23 7:07 # User : geovindu # Product : GoLand # Project : goalgorithms # File : backtrackingbll.go */ package bll import ( "fmt" "goalgorithms/backtracking/dto" "goalgorithms/backtracking/service" ) func testBraceletMatch() { beadPool := []dto.BeadItem{ {BeadID: "B01", Name: "南红圆珠", Material: "南红", ColorGroup: "red", UnitPrice: 168, Stock: 4}, {BeadID: "B02", Name: "和田玉圆珠", Material: "和田玉", ColorGroup: "green", UnitPrice: 198, Stock: 5}, {BeadID: "B03", Name: "紫水晶", Material: "紫水晶", ColorGroup: "purple", UnitPrice: 128, Stock: 4}, {BeadID: "B04", Name: "足金隔珠", Material: "足金", ColorGroup: "gold", UnitPrice: 320, Stock: 3}, } svc := service.NewBraceletMatchService(beadPool) result := svc.Match(8, 2000, 4, 6) fmt.Println("===== 多宝手串搭配方案 =====") for idx, scheme := range result { var total float64 var names []string for _, b := range scheme { total += b.UnitPrice names = append(names, b.Name) } fmt.Printf("方案%d 总价:%.2f 珠子:%v\n", idx+1, total, names) } } func testJewelrySceneMatch() { goodsPool := []dto.JewelryItem{ {SkuID: "N001", Name: "碎钻项链", Category: "necklace", Material: "18K", Color: "white", Style: "luxury", Price: 3299, Stock: 12, HasGem: true}, {SkuID: "N003", Name: "素金项链", Category: "necklace", Material: "Au999", Color: "yellow", Style: "minimalist", Price: 2199, Stock: 9, HasGem: false}, {SkuID: "E001", Name: "白钻耳饰", Category: "earring", Material: "18K", Color: "white", Style: "luxury", Price: 2199, Stock: 15, HasGem: true}, {SkuID: "E003", Name: "素金耳饰", Category: "earring", Material: "Au999", Color: "yellow", Style: "minimalist", Price: 1399, Stock: 11, HasGem: false}, } svc := service.NewJewelrySceneMatchService(goodsPool) targetCats := map[string]bool{"necklace": true, "earring": true} fmt.Println("\n===== 婚嫁场景 =====") wedding := svc.MatchByScene("wedding", 8000, targetCats, 8) for _, set := range wedding { var names []string var total float64 for _, item := range set { names = append(names, item.Name) total += item.Price } fmt.Printf("%v 总价 %.2f\n", names, total) } fmt.Println("\n===== 通勤场景 =====") commute := svc.MatchByScene("commute", 5000, targetCats, 8) for _, set := range commute { var names []string var total float64 for _, item := range set { names = append(names, item.Name) total += item.Price } fmt.Printf("%v 总价 %.2f\n", names, total) } } func BacktrackingMain() { testBraceletMatch() testJewelrySceneMatch() }

介绍了一个基于回溯算法的珠宝搭配系统实现，主要包含：

1. 数据结构定义：BeadItem（手串珠子）和JewelryItem（成套首饰）的实体结构
2. 规则引擎：BraceletRule（手串搭配约束）和SceneJewelryRule（场景首饰规则）
3. 回溯算法核心：分别实现了手串搭配和场景首饰搭配的回溯算法
4. 服务层：提供BraceletMatchService和JewelrySceneMatchService业务服务
5. 评分系统：根据颜色多样性、库存状况等指标对搭配方案进行评分排序

系统支持特定场景（婚嫁、通勤等）的珠宝搭配推荐，并考虑预算、库存等约束条件，最终输出按评分排序的TopN推荐方案。

输出：