[Solved] I get an error when i try to add a new point into my ArrayList
A statement such as points.add(new Point(2,3)); must be inside some method/constructor. solved I get an error when i try to add a new point into my ArrayList
arraylist
[Solved] Adding objects to ArrayList [duplicate]
If I understand the problem correctly, you have 6 Publication objects, and you are only seeing the values of the most recently created one. That would likely be caused because you have static class variables instead of instance variables. For example class A { static int x; // class variable int y; // instance variable … Read more
[Solved] Get the sum of elements of an ArrayList
To get the sum of the elements as your question states, you can use streams. int sum = history.stream() .filter(his->his.getRes().equals(“Vundet”)) .mapToInt(his->his.getWins()) // assuming this getter exists. .sum(); 2 solved Get the sum of elements of an ArrayList
[Solved] Time complexity of ArrayList traversal
The size, isEmpty, get, set, iterator, and listIterator operations run in constant time. http://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html 3 solved Time complexity of ArrayList traversal
[Solved] Find longest squential streak in arraylist java [closed]
ArrayList<Integer> bigger = new ArrayList<>(); for (int x = 0; x < numbers.size(); x++) { int current = numbers.get(x); ArrayList<Integer> temp = new ArrayList<>(); temp.add(current); for (int y = x + 1; y < numbers.size(); y++) { int nextValue = numbers.get(y); if (nextValue == current + 1) { temp.add(nextValue); current = nextValue; } else { … Read more
[Solved] Put Integer ArrayList into a a single String
initialize your string s1. String s1 = “”; for(Integer s : array) { s1 += s; } JOptionpane.showMessageDialog(null, s1); solved Put Integer ArrayList into a a single String
[Solved] ArrayIndexOutOfBounds in android [duplicate]
change for (int i = 0; i <= resultArray.size(); i++) { into: for (int i = 0; i < resultArray.size(); i++) { you can use for(String s: resultArray){…} as well, if you don’t care about the index so much… 1 solved ArrayIndexOutOfBounds in android [duplicate]
[Solved] getting ArrayList from HashSet [closed]
Most common way to do it: HashSet<ArrayList<String>> set = assingYourSet(); for (Iterator iterator = set.iterator(); iterator.hasNext();) { ArrayList<String> arrayList = (ArrayList<String>) iterator.next(); // Do Stuff… } 1 solved getting ArrayList from HashSet [closed]
(Solved) Merge Arraylists inside an ArrayLists of Arraylists [closed]
The following method should do the trick: public static <T> void merge(ArrayList<ArrayList<T>> arrayLists) { int blockSize = 6; for(int i=blockSize; i<arrayLists.size(); i++) { arrayLists.get(i % blockSize).addAll(arrayLists.get(i)); } arrayLists.subList(blockSize, arrayLists.size()).clear(); } You can convert blockSize to the method parameter if you like. 1 solved Merge Arraylists inside an ArrayLists of Arraylists [closed]