A javascript implementation of the arraylist
npm install arraylist-jssh
npm install arraylist-js
`
$3
`javascript
var ArrayList = require("arraylist-js");
//Initialize a list
var names = new ArrayList();
//Create a list from an array
var numberArray = [1, 2, 3]
var numberList = new ArrayList();
numberList.create(numberArray);
console.log(numberList); //[1, 2, 3] now you can perform all the arraylist operations
//Add to a list
names.add("Paul"); //["Paul"]
names.add("John", "Magrette", "Dave"); //["Paul", "John", "Magrette", "Dave"]
//Add a value to a particular index
//params(index, value")
var numbers = new ArrayList(1, 2, 3, 4); //[1, 2, 3, 4];
numbers.addTo(2, 5); //[1, 2, 5, 3, 4] added 5 to the second index
//Get a value at index
numbers.get(0); // 1
numbers.get(2); // 5
//Get the last element in the list
numbers.last() // 4
//Check if the list contains a particular element
numbers.contains(5) //true
numbers.contains(13) //false
//Remove an object at an index
numbers.removeByIndex(0); //[2, 5, 3, 4]
//Remove the first instance of an object
numbers.removeByObject(4); //[2, 5, 3]
//You can pop and push to the arraylist
numbers.pop(); //3
console.log(numbers); //[2, 5]
numbers.push(10);
console.log(numbers); //[2, 5, 10]
//Size
numbers.size() //3
//Clear a list
numbers.clear();
//functional programming techiniques like map, filter
var names = new ArrayList("Paul", "Joan", "Mike")
names.filter(function(name){
if(name !== "Mike"){
return true;
}
}
console.log(names); //["Paul", "Joan"]
names.map(function(name){
return name + "s";
}
console.log(names); //["Pauls", "Joans"]
//Deep compare two array list
var a = new ArrayList(1, 2, 3);
var b = new ArrayList(1, 2, 3, 4);
var c = new ArrayList(1, 2, 3);
a.isEqualTo(b) // false
a.isEqualTo(c) // true
``