add: slices - first part

x-tba/strings-revisited/exercises/_exp/fromarrays/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+)
+
+// ---------------------------------------------------------
+// EXERCISE: Assign the Arrays
+//
+//  1. Create an array named books
+//  2. Add book titles to the array
+//  3. Create two more copies of the array named: upper and lower
+//  4. Change the book titles to uppercase in the upper array only
+//  5. Change the book titles to lowercase in the lower array only
+//  6. Print all the arrays
+//
+// NOTE
+//  Check out the strings package, it has function to convert cases to
+//  upper and lower cases.
+//
+// BONUS
+//  1. Invent your own arrays with different types other than string,
+//     and do some manipulations on them.
+//
+//  👉 THISSSS--------------------------------------------------------
+//  2. Find some Turkish book titles and do the same upper, lowercase conversion
+//     for them.
+//
+//     Here are some books: https://www.goodreads.com/group/bookshelf/417154-bilimkurgu-kul-b?shelf=read
+//
+//     Note: You'd need to use special functions to convert the Turkish letters.
+//           They're in the strings package as well.
+//
+// EXPECTED OUTPUT
+//  ?
+// ---------------------------------------------------------
+
+func main() {
+	books := [...]string{"Kafka's Revenge", "Stay Golden", "Everythingship"}
+
+	upper, lower := books, books
+
+	for i := range books {
+		upper[i] = strings.ToUpper(upper[i])
+		lower[i] = strings.ToLower(lower[i])
+	}
+
+	fmt.Printf("books: %q\n", books)
+	fmt.Printf("upper: %q\n", upper)
+	fmt.Printf("lower: %q\n", lower)
+}