diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..73f69e0
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
new file mode 100644
index 0000000..797acea
--- /dev/null
+++ b/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/golang-basic/latihan/test.go b/golang-basic/latihan/test.go
deleted file mode 100644
index 06ab7d0..0000000
--- a/golang-basic/latihan/test.go
+++ /dev/null
@@ -1 +0,0 @@
-package main
diff --git a/golang-basic/latihan/tugas1/01-arif.go b/golang-basic/latihan/tugas1/01-arif.go
new file mode 100644
index 0000000..236f7ba
--- /dev/null
+++ b/golang-basic/latihan/tugas1/01-arif.go
@@ -0,0 +1,22 @@
+package main
+
+import "fmt"
+
+func main() {
+	var kata string
+
+	fmt.Scan(&kata)
+
+	result := isPalindrome(kata)
+
+	fmt.Println(result)
+}
+
+func isPalindrome(kata string) (isPalindrome bool) {
+	for i := 0; i < len(kata)/2; i++ {
+		if kata[i] == kata[len(kata)-i-1] {
+			isPalindrome = true
+		}
+	}
+	return
+}
diff --git a/golang-basic/latihan/tugas1/01-arif_test.go b/golang-basic/latihan/tugas1/01-arif_test.go
new file mode 100644
index 0000000..8004310
--- /dev/null
+++ b/golang-basic/latihan/tugas1/01-arif_test.go
@@ -0,0 +1,42 @@
+package main
+
+import "testing"
+
+func Test_isPalindrome(t *testing.T) {
+	type args struct {
+		kata string
+	}
+	tests := []struct {
+		name             string
+		args             args
+		wantIsPalindrome bool
+	}{
+		{
+			name             : "test",
+			args            : args{
+				"katak",
+			},
+			wantIsPalindrome : true,
+		},
+		{
+			name             : "test",
+			args            : args{
+				"kata",
+			},
+			wantIsPalindrome : false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotIsPalindrome := isPalindrome(tt.args.kata); gotIsPalindrome != tt.wantIsPalindrome {
+				t.Errorf("isPalindrome() = %v, want %v", gotIsPalindrome, tt.wantIsPalindrome)
+			}
+		})
+	}
+}
+
+func BenchmarkIsPalindrome(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		isPalindrome("katak")
+	}
+}
diff --git a/golang-basic/latihan/tugas1/go.mod b/golang-basic/latihan/tugas1/go.mod
new file mode 100644
index 0000000..37bab88
--- /dev/null
+++ b/golang-basic/latihan/tugas1/go.mod
@@ -0,0 +1,3 @@
+module tugas1
+
+go 1.17
diff --git a/golang-basic/latihan/tugas2/02-arif.go b/golang-basic/latihan/tugas2/02-arif.go
new file mode 100644
index 0000000..39a8885
--- /dev/null
+++ b/golang-basic/latihan/tugas2/02-arif.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+)
+
+func main() {
+	var kata string
+
+	fmt.Scan(&kata)
+
+	kata2 := kata[0]
+
+	result := checkConsonant(string(kata2))
+
+	fmt.Print(result)
+}
+
+func checkConsonant(ch string) string {
+	ch = strings.ToLower(ch)
+
+	if ch == "a" || ch == "i" || ch == "u" || ch == "e" || ch == "o" {
+		return "Vokal"
+	}
+
+	return "Konsonan"
+}
+
+func checkConsonantWithPackage(input string) string {
+	vowels := "aeiou"
+
+	if strings.Contains(vowels, input) {
+		return "Vokal"
+	}
+
+	return "Konsonan"
+}
diff --git a/golang-basic/latihan/tugas2/02-arif_test.go b/golang-basic/latihan/tugas2/02-arif_test.go
new file mode 100644
index 0000000..d21dfe3
--- /dev/null
+++ b/golang-basic/latihan/tugas2/02-arif_test.go
@@ -0,0 +1,151 @@
+package main
+
+import "testing"
+
+func Test_checkConsonant(t *testing.T) {
+	type args struct {
+		ch string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "Test untuk konsonan",
+			args: args{
+				ch: "k",
+			},
+			want: "Konsonan",
+		},
+		{
+			name: "Test untuk konsonan 2",
+			args: args{
+				ch: "p",
+			},
+			want: "Konsonan",
+		},
+		{
+			name: "Test untuk Vokal a",
+			args: args{
+				ch: "a",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal i",
+			args: args{
+				ch: "i",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal u",
+			args: args{
+				ch: "u",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal e",
+			args: args{
+				ch: "e",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal o",
+			args: args{
+				ch: "o",
+			},
+			want: "Vokal",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := checkConsonant(tt.args.ch); got != tt.want {
+				t.Errorf("checkConsonant() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_checkConsonantWithPackage(t *testing.T) {
+	type args struct {
+		input string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "Test untuk konsonan",
+			args: args{
+				input: "k",
+			},
+			want: "Konsonan",
+		},
+		{
+			name: "Test untuk konsonan 2",
+			args: args{
+				input: "p",
+			},
+			want: "Konsonan",
+		},
+		{
+			name: "Test untuk Vokal a",
+			args: args{
+				input: "a",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal i",
+			args: args{
+				input: "i",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal u",
+			args: args{
+				input: "u",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal e",
+			args: args{
+				input: "e",
+			},
+			want: "Vokal",
+		},
+		{
+			name: "Test untuk Vokal o",
+			args: args{
+				input: "o",
+			},
+			want: "Vokal",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := checkConsonantWithPackage(tt.args.input); got != tt.want {
+				t.Errorf("checkConsonantWithPackage() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func BenchmarkCheckConsonant(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		checkConsonant("a")
+	}
+}
+
+func BenchmarkCheckConsonantWithPackage(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		checkConsonantWithPackage("a")
+	}
+}
diff --git a/golang-basic/latihan/tugas2/go.mod b/golang-basic/latihan/tugas2/go.mod
new file mode 100644
index 0000000..3cb07f8
--- /dev/null
+++ b/golang-basic/latihan/tugas2/go.mod
@@ -0,0 +1,3 @@
+module tugas2
+
+go 1.17