add: numbers and strings exercises

08-numbers-and-strings/02-strings/exercises/01-windows-path/main.go

@@ -10,7 +10,8 @@ package main
 import "fmt"
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Windows Path
+//
 //  1. Change the following program
 //  2. It should use a raw string literal instead
 //

08-numbers-and-strings/02-strings/exercises/02-print-json/main.go

@@ -10,7 +10,8 @@ package main
 import "fmt"
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Print JSON
+//
 //  1. Change the following program
 //  2. It should use a raw string literal instead
 //

08-numbers-and-strings/02-strings/exercises/03-raw-concat/main.go

@@ -10,7 +10,8 @@ package main
 import "fmt"
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Raw Concat
+//
 //  1. Initialize the name variable
 //     by getting input from the command line
 //

08-numbers-and-strings/02-strings/exercises/04-count-the-chars/main.go

@@ -13,7 +13,8 @@ import (
 )
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Count the Chars
+//
 //  1. Change the following program to work with unicode
 //     characters.
 //

08-numbers-and-strings/02-strings/exercises/05-improved-banger/main.go

@@ -14,7 +14,8 @@ import (
 )
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Improved Banger
+//
 //  Change the Banger program the work with Unicode
 //  characters.
 //

08-numbers-and-strings/02-strings/exercises/06-tolowercase/main.go

@@ -8,12 +8,17 @@
 package main
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: ToLowercase
+//
 //  1. Look at the documentation of strings package
 //  2. Find a function that changes the letters into lowercase
 //  3. Get a value from the command-line
 //  4. Print the given value in lowercase letters
 //
+// HINT
+//  Check out the strings package from Go online documentation.
+//  You will find the lowercase function there.
+//
 // INPUT
 //  "SHEPARD"
 //

08-numbers-and-strings/02-strings/exercises/07-trim-it/main.go

@@ -12,7 +12,8 @@ import (
 )
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Trim It
+//
 //  1. Look at the documentation of strings package
 //  2. Find a function that trims the spaces from
 //     the given string

08-numbers-and-strings/02-strings/exercises/08-right-trim-it/main.go

@@ -12,7 +12,8 @@ import (
 )
 
 // ---------------------------------------------------------
-// EXERCISE
+// EXERCISE: Right Trim It
+//
 //  1. Look at the documentation of strings package
 //  2. Find a function that trims the spaces from
 //     only the right-most part of the given string