From 6e5b86095517a2023200bdd5aba617e04eb0d172 Mon Sep 17 00:00:00 2001
From: Ilya Smyshlyaev <smyshlyaev.il@yandex.ru>
Date: Fri, 16 Sep 2022 01:34:07 +0400
Subject: [PATCH] add some exaples, rotation this is for go course, twonums
 this is a problem from leetcode

---
 fizzbuzz/FizzBuzz.go      | 35 +++++++++++++++++++++++++
 rotation/rotation_test.go | 55 +++++++++++++++++++++++++++++++++++++++
 twonums/twonums.go        | 23 ++++++++++++++++
 3 files changed, 113 insertions(+)
 create mode 100644 fizzbuzz/FizzBuzz.go
 create mode 100644 rotation/rotation_test.go
 create mode 100644 twonums/twonums.go

diff --git a/fizzbuzz/FizzBuzz.go b/fizzbuzz/FizzBuzz.go
new file mode 100644
index 0000000..b1da893
--- /dev/null
+++ b/fizzbuzz/FizzBuzz.go
@@ -0,0 +1,35 @@
+package fizzbuzz
+
+import "fmt"
+
+func main() {
+	// for i := 1; i < 101; i++ {
+	// 	if i%15 == 0 {
+	// 		fmt.Print("FizzBuzz\n")
+	// 	} else if i%3 == 0 {
+	// 		fmt.Print("Fizz\n")
+	// 	} else if i%5 == 0 {
+	// 		fmt.Print("Buzz\n")
+	// 	} else {
+	// 		fmt.Println(i)
+	// 	}
+	// }
+
+	switchFB()
+}
+
+func switchFB() {
+	for i := 1; i < 101; i++ {
+		switch {
+		case i%15 == 0:
+			fmt.Println("FizzBuzz")
+		case i%3 == 0:
+			fmt.Println("Fizz")
+		case i%5 == 0:
+			fmt.Println("Buzz")
+		default:
+			fmt.Println(i)
+		}
+	}
+
+}
diff --git a/rotation/rotation_test.go b/rotation/rotation_test.go
new file mode 100644
index 0000000..43b4be5
--- /dev/null
+++ b/rotation/rotation_test.go
@@ -0,0 +1,55 @@
+package rotation_test
+
+import (
+	"fmt"
+	"gotest/rotation"
+	"reflect"
+	"testing"
+)
+
+// Структура тестовых данных, input - входной массив,
+// iteration - колличество повторений,
+// output - ожидаеммый вывод
+
+type testdata struct {
+	input     []int
+	iteration int
+	output    []int
+}
+
+// Входной, повторения, ожидания
+
+var test = []testdata{
+	{[]int{3, 8, 9, 7, 6}, 3, []int{9, 7, 6, 3, 8}},
+	{[]int{1, 2, 3, 4}, 4, []int{1, 2, 3, 4}},
+	{[]int{1, 2, 3, -1000}, 1, []int{-1000, 1, 2, 3}},
+}
+
+func TestRotation(t *testing.T) {
+
+	t.Run(
+		"insert slices", func(t *testing.T) {
+			for _, data := range test {
+				//	Передаём массив и повторения в функцию и записываем результат в переменную
+				v := rotation.Rotation(data.input, data.iteration)
+				// Сравниваем вывод с ожиданием
+				if reflect.DeepEqual(v, data.output) != true {
+					t.Error(
+						"For: ", data.input,
+						"Expected: ", data.output,
+						"Got: ", v,
+					)
+				} else {
+					fmt.Println(
+						"For: ", data.input,
+						"Iterations", data.iteration,
+						"Expected: ", data.output,
+						"Got: ", v,
+					)
+
+				}
+			}
+		},
+	)
+
+}
diff --git a/twonums/twonums.go b/twonums/twonums.go
new file mode 100644
index 0000000..19793f7
--- /dev/null
+++ b/twonums/twonums.go
@@ -0,0 +1,23 @@
+package twonums
+
+import "fmt"
+
+func main() {
+	var test_nums []int
+	test_nums = append(test_nums, 2, 3, 5, 6, 9, 1)
+	fmt.Print(twoSum(test_nums, 10))
+}
+
+func twoSum(nums []int, target int) []int {
+
+	var result []int
+
+	for i := 0; i < len(nums); i++ {
+		for j := i + 1; j < len(nums); j++ {
+			if nums[i]+nums[j] == target {
+				result = append(result, i, j)
+			}
+		}
+	}
+	return result
+}