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Python 2022-03-17 05:30:16
when to use list
When to use List, Set and Map? If we need to access elements frequently by using index, then List is a way to go ArrayList provides faster access if we know index. If we want to store elements and want them to maintain an order, then go for List again. ... Add solution -
Java 2022-03-11 23:25:15
java arraylist access index
List<String> cities = new ArrayList<String>(); cities.add("Tuguegarao City"); cities.add("Tabuk City"); cities.add("Davao City"); System.out.println(cities.get(1)); //prints "Tabuk City" Add solution -
Java 2022-03-09 08:40:09
how to declare array of arraylist in java
ArrayList<Integer> integerArray = new ArrayList<Integer>(); ArrayList<String> integerArray = new ArrayList<String>(); ArrayList<Double> integerArray = new ArrayList<Double>(); //... keep replacing what is inside the <... Add solution -
Java 2022-03-06 09:25:21
how to check if an element is in arraylist java
// creating an Empty Integer ArrayList ArrayList<Integer> arr = new ArrayList<Integer>(4); // using add() to initialize values // [1, 2, 3, 4] arr.add(1); arr.add(2); arr.add(3); arr.add(4); // use cont... Add solution -
Java 2022-03-05 05:40:24
swap items in arraylist java
public class ArrayListExample { public static void main(String[] args) { ArrayList<String> list = new ArrayList<>(Arrays.asList("a", &q... Add solution -
Java 2022-03-03 23:25:02
how to check if an arraylist contains a value in java recursion
public static boolean contains(ArrayList<Integer> list, int value) { return contains(list, value, 0); } private static boolean contains(ArrayList<Integer> list, int value, int idx) { boolean hasInt = false; if... Add solution -
Java 2022-03-03 01:00:01
Android java toArray to String array
List<String> stockList = new ArrayList<String>(); stockList.add("stock1"); stockList.add("stock2"); String[] stockArr = new String[stockList.size()]; stockArr = stockList.toArray(stockArr); for(String s : stockArr) Sy... Add solution -
Java 2022-02-27 14:30:01
java type casting
Primitive Type casting and Reference Type casting PRIMITIVE CASTING: implicit casting (casting smaller type to larger int a = 100; double c = a;) explicit casting (casting larger to smaller byte b = (byte) a; REFERENCE CASTING: upcasting - implicitl... Add solution
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