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package com.example.myapplication import android.os.Bundle import androidx.activity.ComponentActivity import androidx.activity.compose.setContent import androidx.compose.foundation.layout.Column import androidx.compose.foundation.layout.fillMaxSize import androidx.compose.material3.MaterialTheme import androidx.compose.material3.Surface import androidx.compose.material3.Text import androidx.compose.runtime.* import androidx.compose.ui.Modifier import androidx.compose.ui.tooling.preview.Preview import com.example.myapplication.ui.theme.MyApplicationTheme import java.util.* class MainActivity : ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContent { MyApplicationTheme { // A surface container using the 'background' color from the theme Surface( modifier = Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background ) { QueueExample() } } } } } @Composable fun QueueExample() { val queue = remember { LinkedList<String>() } // Agregar elementos a la cola queue.offer("Elemento 1") queue.offer("Elemento 2") queue.offer("Elemento 3") // Obtener y mostrar el primer elemento sin eliminarlo val firstElement = remember { queue.peek() } // Eliminar y mostrar los elementos de la cola val elements = remember { mutableListOf<String>().apply { while (queue.isNotEmpty()) { add(queue.poll()) } } } Column { Text(text = "Primer elemento: $firstElement") elements.forEach { element -> Text(text = "Elemento eliminado: $element") } } } @Preview(showBackground = true) @Composable fun QueueExamplePreview() { MyApplicationTheme { QueueExample() } } |
