feat(Go-Tool)：

2020/12/31：新增项目案例（角色技能树）
               2020/12/31: 修改diliver包结构

ProgressTest/diliver/OrderRule.go

@@ -0,0 +1,49 @@
+/*
+ *  @Author : huangzj
+ *  @Time : 2020/11/16 18:00
+ *  @Description：
+ */
+
+package diliver
+
+import "github.com/ahmetb/go-linq"
+
+type orderRule = func([]*Deliver) []*Deliver
+type intOrderRule = func([]*Deliver) [][]int
+
+var (
+	firstOrderRule  orderRule
+	secondOrderRule orderRule
+	thirdOrderRule  intOrderRule
+)
+
+func FirstOrderRule(delivers []*Deliver) []*Deliver {
+	var newDelivers []*Deliver
+	linq.From(delivers).OrderByDescending(func(d interface{}) interface{} {
+		return d.(*Deliver).Score
+	}).ToSlice(&newDelivers)
+	return newDelivers
+}
+
+func SecondOrderRule(delivers []*Deliver) []*Deliver {
+	newDeliver := make([]*Deliver, 0)
+	//第二次排序
+	linq.From(delivers).OrderByDescending(func(d interface{}) interface{} {
+		return d.(*Deliver).Score
+	}).ThenBy(func(d interface{}) interface{} {
+		return d.(*Deliver).Id
+	}).ToSlice(&newDeliver)
+
+	return newDeliver
+}
+
+func ThirdOrderRule(delivers []*Deliver) [][]int {
+	Ids := make([][]int, 0)
+	//第三次排序
+	linq.From(delivers).OrderByDescending(func(d interface{}) interface{} {
+		return d.(*Deliver).Score
+	}).Select(func(i interface{}) interface{} {
+		return []int{i.(*Deliver).Score, 1}
+	}).ToSlice(&Ids)
+	return Ids
+}