Merge pull request #7 from inplayer-org/viktor-twelve-days

Exercism GO Track twelve-days solution

Author: Darko Djalevski

viktor/twelve-days/twelve_days.go

@@ -0,0 +1,45 @@
+package twelve
+
+var gifts = []struct {
+	day, gift string
+}{
+	{"first", "a Partridge in a Pear Tree"},
+	{"second", "two Turtle Doves"},
+	{"third", "three French Hens"},
+	{"fourth", "four Calling Birds"},
+	{"fifth", "five Gold Rings"},
+	{"sixth", "six Geese-a-Laying"},
+	{"seventh", "seven Swans-a-Swimming"},
+	{"eighth", "eight Maids-a-Milking"},
+	{"ninth", "nine Ladies Dancing"},
+	{"tenth", "ten Lords-a-Leaping"},
+	{"eleventh", "eleven Pipers Piping"},
+	{"twelfth", "twelve Drummers Drumming"},
+}
+
+func Song() string {
+	song := ""
+	for i := 1; i <= len(gifts); i++ {
+		if i != len(gifts) {
+			song += Verse(i) + "\n"
+		} else {
+			song += Verse(i)
+		}
+
+	}
+	return song
+}
+
+func Verse(v int) string {
+	result := "On the " + gifts[v-1].day + " day of Christmas my true love gave to me: "
+	for i := v; i > 0; i-- {
+		result += gifts[i-1].gift
+		if i == 2 {
+			result += ", and "
+		} else if i > 2 {
+			result += ", "
+		}
+	}
+
+	return result + "."
+}