实现桥接模式和组合模式示例，添加相关类和方法，增强代码可读性

go/bridge/main.go

@@ -0,0 +1,65 @@
+package main
+
+import "fmt"
+
+/*
+实例
+汤宝宝成为了一个电子画家，但是不同形状的笔刷和不同颜色颜料的组合让他犯了难...
+*/
+
+// 抽象类
+type Paint interface {
+	Use() string
+}
+
+type Brush interface {
+	Draw()
+}
+
+// 具体实现类
+type RedPaint struct{}
+
+func (r *RedPaint) Use() string {
+	return "红色颜料"
+}
+
+type BluePaint struct{}
+
+func (b *BluePaint) Use() string {
+	return "蓝色颜料"
+}
+
+type RoundBrush struct {
+	paint Paint
+}
+
+func (r *RoundBrush) Draw() {
+	fmt.Printf("使用圆形笔刷和%s进行绘图！\n", r.paint.Use())
+}
+
+type SquareBrush struct {
+	paint Paint
+}
+
+func (s *SquareBrush) Draw() {
+	fmt.Printf("使用方形笔刷和%s进行绘图！\n", s.paint.Use())
+}
+
+// 绘图函数
+func Painting(brush Brush) {
+	brush.Draw()
+}
+
+func main() {
+	fmt.Println("============= 桥接模式 =============")
+
+	redPaint := &RedPaint{}
+	bluePaint := &BluePaint{}
+
+	Painting(&RoundBrush{paint: redPaint})
+	Painting(&SquareBrush{paint: redPaint})
+	Painting(&RoundBrush{paint: bluePaint})
+	Painting(&SquareBrush{paint: bluePaint})
+
+	fmt.Println("\n=========== 桥接模式结束 ===========")
+}