Add remaining code of chapter 02

chapter_02/activity_2.02/main.go

@@ -0,0 +1,27 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  words := map[string]int{
+    "Gonna": 3,
+    "You":   3,
+    "Give":  2,
+    "Never": 1,
+    "Up":    4,
+  }
+
+  max_word := ""
+  max_count := 0
+
+  for word, count := range words {
+    if count > max_count {
+      max_word, max_count = word, count
+    }
+  }
+
+  fmt.Println("Most popular word:", max_word)
+  fmt.Println("With a count of:", max_count)
+
+}

chapter_02/activity_2.03/main.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  numbers := []int{5, 8, 2, 4, 0, 1, 3, 7, 9, 6}
+
+  fmt.Println("Before:", numbers)
+
+  for swapped := true; swapped == true; {
+    swapped = false
+    for i := 1; i < len(numbers); i++ {
+      if numbers[i] < numbers[i-1] {
+        numbers[i-1], numbers[i] = numbers[i], numbers[i-1]
+        swapped = true
+      }
+    }
+  }
+
+  fmt.Println("After: ", numbers)
+
+}

chapter_02/exercise_2.05/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+  "fmt"
+  "time"
+)
+
+func main() {
+
+  dayBorn := time.Monday
+
+  switch dayBorn {
+  case time.Monday:
+    fmt.Println("Monday's child is fair of face")
+  case time.Tuesday:
+    fmt.Println("Tuesday's child is full of grace")
+  case time.Wednesday:
+    fmt.Println("Wednesday's child is fair of woe")
+  case time.Thursday:
+    fmt.Println("Thursday's child has far to go")
+  case time.Friday:
+    fmt.Println("Friday's child is loving and giving")
+  case time.Saturday:
+    fmt.Println("Saturday's child works hard for a living")
+  case time.Sunday:
+    fmt.Println("Sunday's child is bonny and blithe")
+  default:
+    fmt.Println("Error, day born not valid")
+  }
+}

chapter_02/exercise_2.06/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+  "fmt"
+  "time"
+)
+
+func main() {
+
+  dayBorn := time.Sunday
+
+  switch dayBorn {
+  case time.Monday, time.Tuesday, time.Wednesday,
+    time.Thursday, time.Friday:
+    fmt.Println("Gorn on a weekday")
+  case time.Saturday, time.Sunday:
+    fmt.Println("Born on the weekend")
+  default:
+    fmt.Println("Error, day born not valid")
+  }
+
+}

chapter_02/exercise_2.07/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+  "fmt"
+  "time"
+)
+
+func main() {
+
+  switch dayBorn := time.Sunday; {
+  case dayBorn == time.Saturday || dayBorn == time.Sunday:
+    fmt.Println("Born on the weekend")
+  default:
+    fmt.Println("Born some other day")
+  }
+
+}

chapter_02/exercise_2.08/main.go

@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  for i := 0; i < 5; i++ {
+    fmt.Println(i)
+  }
+
+}

chapter_02/exercise_2.09/main.go

@@ -0,0 +1,13 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  names := []string{"Jim", "Jane", "Joe", "June"}
+
+  for i := 0; i < len(names); i++ {
+    fmt.Println(names[i])
+  }
+
+}

chapter_02/exercise_2.10/main.go

@@ -0,0 +1,17 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  config := map[string]string{
+    "debug":    "1",
+    "logLevel": "warn",
+    "version":  "1.2.1",
+  }
+
+  for key, value := range config {
+    fmt.Println(key, "=", value)
+  }
+
+}

chapter_02/exercise_2.11/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+  "fmt"
+  "math/rand"
+)
+
+func main() {
+
+  for {
+    r := rand.Intn(8)
+    if r%3 == 0 {
+      fmt.Println("Skip")
+      continue
+    } else if r%2 == 0 {
+      fmt.Println("Stop")
+      break
+    }
+    fmt.Println(r)
+  }
+
+}