golang about 05_hash_tables (#42)

* recursion_Golang

* go_fmt

* selection_sort_Golang

* rm-golang

* selection_sort_Golang

* selection_sort_Golang

* selection_sort_Golang

* dynamic_golang

* golang 05_hash_tables 02_check_voter.go

* golang 05_hash_tables 01_price_of_groceries

05_hash_tables/golang/01_price_of_groceries.go

@@ -0,0 +1,13 @@
+package main
+
+import "fmt"
+
+var book map[string]float64
+
+func main() {
+	book = make(map[string]float64)
+	book["apple"] = 0.67
+	book["milk"] = 1.49
+	book["avocado"] = 1.49
+	fmt.Println(book)
+}

05_hash_tables/golang/02_check_voter.go

@@ -0,0 +1,21 @@
+package main
+
+import "fmt"
+
+var voted map[string]bool
+
+func main() {
+	voted = make(map[string]bool)
+	check_voter("tom")
+	check_voter("mike")
+	check_voter("mike")
+}
+
+func check_voter(name string) {
+	if voted[name] {
+		fmt.Println("kick tem out!")
+	} else {
+		voted[name] = true
+		fmt.Println("let tem vote!")
+	}
+}