diff --git a/MainActivity.kt b/MainActivity.kt
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+++ b/MainActivity.kt
@@ -0,0 +1,73 @@
+/*
+    Nama: Rafi Fattan Fitriardi
+    NPM : 202310715002
+ */
+
+
+package com.example.sorting
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            BubbleSortApp()
+        }
+    }
+}
+
+@Composable
+fun BubbleSortApp() {
+    // Array awal
+    val original = listOf(8, 3, 5, 2, 9)
+    val sorted = bubbleSort(original.toMutableList())
+
+    // Tampilan UI
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp)
+    ) {
+        Text(
+            text = "Algoritma Bubble Sort",
+            style = MaterialTheme.typography.headlineSmall
+        )
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Text("Sebelum Sorting: ${original.joinToString()}")
+        Spacer(modifier = Modifier.height(8.dp))
+        Text("Sesudah Sorting: ${sorted.joinToString()}")
+    }
+}
+
+
+fun bubbleSort(arr: MutableList<Int>): List<Int> {
+    val n = arr.size
+    for (i in 0 until n - 1) {
+        for (j in 0 until n - i - 1) {
+            if (arr[j] > arr[j + 1]) {
+                // Tukar elemen
+                val temp = arr[j]
+                arr[j] = arr[j + 1]
+                arr[j + 1] = temp
+            }
+        }
+    }
+    return arr
+}
+
+
+@Preview(showBackground = true)
+@Composable
+fun PreviewBubbleSortApp() {
+    BubbleSortApp()
+}
\ No newline at end of file
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