Array List Practice¶

Array List Practice

toc: true
layout: post
description: Practice the various uses of Array Lists.
categories: [jupyter]
image: /images/arraylist.png
title: Array List Practice
author: Rithwikh Varma
show_tags: true
comments: true

In [1]:

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import javax.imageio.stream.ImageOutputStream;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.ImageReader;
import javax.imageio.ImageTypeSpecifier;


ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
System.out.println(array);

[Apple Music, Spotify, Soundcloud, Pandora, Amazon Music, Youtube Music]

In [2]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");

array.remove("Pandora");
System.out.println(array);

[Apple Music, Spotify, Soundcloud, Amazon Music, Youtube Music]

In [3]:

ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");
array.size();

Out[3]:

In [4]:

ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");
System.out.println(arrayartist);

[Ed Sheeran, Justin Bieber, Drake, Bad Bunny, Ariana Grande, The Weekend, Taylor Swift]

In [5]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.size();

Out[5]:

In [6]:

ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");
System.out.println(arrayartist);

arrayartist.clear();
System.out.println(arrayartist);

[Ed Sheeran, Justin Bieber, Drake, Bad Bunny, Ariana Grande, The Weekend, Taylor Swift]
[]

In [7]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.get(3);

Out[7]:

Pandora

In [8]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.indexOf("Amazon Music");

Out[8]:

In [9]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.lastIndexOf("Apple Music");

Out[9]:

In [10]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.indexOf("Youtube Music");

Out[10]:

In [11]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.hashCode();

Out[11]:

1688530220

In [12]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.isEmpty();

Out[12]:

false

In [13]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.contains("Spotify");

Out[13]:

true

In [14]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.contains("Google Play");

Out[14]:

false

In [15]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");
array.add("30");
array.add("314159265359");
array.sort(Comparator.naturalOrder());
System.out.println(array);

[30, 314159265359, Amazon Music, Apple Music, Pandora, Soundcloud, Spotify, Youtube Music]

In [16]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");


ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");


array.addAll(4, arrayartist);
System.out.println(array);

[Apple Music, Spotify, Soundcloud, Pandora, Ed Sheeran, Justin Bieber, Drake, Bad Bunny, Ariana Grande, The Weekend, Taylor Swift, Amazon Music, Youtube Music]

In [17]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");


ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");


array.set(5, "Justin Bieber");
System.out.println(array);

[Apple Music, Spotify, Soundcloud, Pandora, Amazon Music, Justin Bieber]

In [18]:

ArrayList<String> array = new ArrayList<>();
array.add("Apple Music");
array.add("Spotify");
array.add("Soundcloud");
array.add("Pandora");
array.add("Amazon Music");
array.add("Youtube Music");


ArrayList<String> arrayartist = new ArrayList<>();
arrayartist.add("Ed Sheeran");
arrayartist.add("Justin Bieber");
arrayartist.add("Drake");
arrayartist.add("Bad Bunny");
arrayartist.add("Ariana Grande");
arrayartist.add("The Weekend");
arrayartist.add("Taylor Swift");


array.set(5, "Ariana Grande");
System.out.println(array);

[Apple Music, Spotify, Soundcloud, Pandora, Amazon Music, Ariana Grande]

In [19]:

int i = 0;

while (i < 5)
{
System print.out.ln(i);
i++;
}

|   System print.out.ln(i);
';' expected