add: string quiz + execises

19-strings-runes-bytes/exercises/03-rune-manipulator/main.go

@@ -0,0 +1,47 @@
+package main
+
+// ---------------------------------------------------------
+// EXERCISE: Rune Manipulator
+//
+//  Please read the comments inside the following code.
+//
+// EXPECTED OUTPUT
+//  Please run the solution.
+// ---------------------------------------------------------
+
+func main() {
+	strings := []string{
+		"cool",
+		"güzel",
+		"jīntiān",
+		"今天",
+		"read 🤓",
+	}
+
+	_ = strings
+
+	// Print the byte and rune length of the strings
+	// Hint: Use len and utf8.RuneCountInString
+
+	// Print the bytes of the strings in hexadecimal
+	// Hint: Use % x verb
+
+	// Print the runes of the strings in hexadecimal
+	// Hint: Use % x verb
+
+	// Print the runes of the strings as rune literals
+	// Hint: Use for range
+
+	// Print the first rune and its byte size of the strings
+	// Hint: Use utf8.DecodeRuneInString
+
+	// Print the last rune of the strings
+	// Hint: Use utf8.DecodeLastRuneInString
+
+	// Slice and print the first two runes of the strings
+
+	// Slice and print the last two runes of the strings
+
+	// Convert the string to []rune
+	// Print the first and last two runes
+}