add: numbers and strings exercises

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

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"fmt"
+)
+
+// ---------------------------------------------------------
+// EXERCISE: Trim It
+//
+//  1. Look at the documentation of strings package
+//  2. Find a function that trims the spaces from
+//     the given string
+//  3. Trim the text variable and print it
+//
+// EXPECTED OUTPUT
+//  The weather looks good.
+//  I should go and play.
+// ---------------------------------------------------------
+
+func main() {
+	msg := `
+	
+	The weather looks good.
+I should go and play.
+
+
+
+	`
+
+	fmt.Println(msg)
+}

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

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"fmt"
+	"strings"
+)
+
+func main() {
+	msg := `
+	
+	The weather looks good.
+I should go and play.
+
+
+
+	`
+
+	fmt.Println(strings.TrimSpace(msg))
+}