20201231

20201231/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"strconv"
+	"strings"
+)
+
+func main() {
+
+}
+
+func process(n int) string {
+	ret := ""
+	for i := 1; i <= n; i++ {
+		ret = say(ret)
+	}
+	return ret
+}
+
+func say(num string) string {
+	if num == "" {
+		return "1"
+	}
+	var nums []string
+	var n []uint8
+	last := num[0]
+	for i := 0; i < len(num); i++ {
+		if last == num[i] {
+			n = append(n, num[i])
+		} else {
+			nums = append(nums, string(n))
+			last = num[i]
+			n = nil
+			n = append(n, num[i])
+		}
+	}
+	nums = append(nums, string(n))
+	ret := strings.Builder{}
+	for _, s := range nums {
+		ret.WriteString(strconv.Itoa(len(s)))
+		ret.WriteByte(s[0])
+	}
+	return ret.String()
+}