Create random date from today Have while loop, Check generated already exist in exclude dates array (continue loop until you find date which is not in dates array) const randomDateFromToday = (exclude_dates, max_days = 365) => { const randomDate = () => { const rand = Math.floor(Math.random() * max_days) * 1000 * 60 * 60 … Read more
First, no one is supposed to give you the actual code for your homework. Here is the basic idea on how it looks like conceptually: This can be done recursively by (pseudo-code of course): String[] allCombinations(String[] input) { if (input is empty) { return [ “” ] } String[] result String[] childrenCombinations = allCombinations(input[1:]) foreach … Read more
I solved my question, is not simple question IF first added boolean equals in my class public boolean equals(Object o) { ItemAdubacao adubacao = (ItemAdubacao) o; if (this.getTanque_id() == adubacao.getTanque_id() && (this.getProduto().equals(adubacao.getProduto()))) { return true; } return false; } then I created an ArrayList to separate the duplicate objects and adding the sum of values … Read more
Probably there could be better solutions, but the following should work for you: public static void main(String[] args) { Integer[] a = new Integer[] { 1, 0, 0, 1, 0, 0 }; List<Integer> a1 = Arrays.asList(a); Integer[] b = new Integer[] { 0, 1, 1, 0, 0, 0 }; List<Integer> a2 = Arrays.asList(b); List<Integer> a3 … Read more
Don’t use square brackets with your ArrayList. Lists are not arrays. ArrayList<Integer> list = new ArrayList<>(5); Add to it with list.add(sc.nextInt()); Remove from it with list.remove(index); 2 solved I can’t understand ArrayList[]= new Arraylist[]; declaration.
You are getting IndexOutOfBoundsException on restrictedAreaArrayList, You are adding imageInfos to restrictedAreaArrayList with restrictedAreaArrayList.add(i,imageInfos); ith index may not exist in restrictedAreaArrayList you can just add it restrictedAreaArrayList.add(imageInfos) Or if you want to preserve the order then make restrictedAreaArrayList’s size equal to imageInfosArrayList you can do that by creating it with restrictedAreaArrayList = new ArrayList<ImageInfos>(imageInfosArrayList.size()); Or … Read more
If getTranscript is void: for (String s : slist) { getTranscript(s); } If getTranscript returns a string and you would like to save it: ArrayList<String> transcripts = new ArrayList<String>(); for (String s : slist) { transcripts.add(getTranscript(s)); } 1 solved Need help to convert data in an ArrayList to Strings and Pass each of them as … Read more
double num = sales * 1.5 + 5000; ArrayList<Double> salesArList = new ArrayList<Double>(); double i = sales; do{ salesArList.add(i); i = i + 5000; }while(i <= num); solved Building ArrayList – Complex
What you are trying to do does not make much sense. You cannot change something that is a type String to a class object. Either you need to change what is being passed to the constructor or you need to change the type of the instance variables to String. Personally I would change the Node … Read more
You’ve two arrayList one local and another one global. onClick() method you’re adding your item in global arrayList having reference name fruits but your ListView using local arrayList also having same name fruits, so don’t create local list inside onCreate() method. Also after adding new fruit call notifyDataSetChanged() on your adapter. ArrayList<String> fruits; ListAdapter myAdapter; … Read more
Use this code for your problem: in the other method public String convertToString(ArrayList<String> al) { String str =”” ; for(int i=0; i<al.size;i++){str+=al.get(i)+” “;} return str; } If i understand your query correctly then this is the solution 0 solved How to get every String from an ArrayList [closed]
See the documentation of List#contains given below: Returns true if this list contains the specified element. More formally, returns true if and only if this list contains at least one element e such that Objects.equals(o, e). Thus, you need to override equals method in class City. You can do it as follows: @Override public boolean … Read more
I am not sure what exactly you want to achieve as you are not explaining it very clearly. But if you need to search in arrays that are added in a list and you do not mind using linq to make it a bit easier the following will compile and give you the outcome wanted … Read more
You haven’t initialized your Person class on onCreate() method that’s why p.TopTen is null. So you need to do it by p = new Person(); 5 solved ListView Crash FATAL EXCEPTION
Do you mean this? m.value1= Arrays.asList(11,12); m1.value2 = Arrays.asList(1,2,3,4,5); for(Integer i : m.value1) { for(Integer j : m1.value2){ System.out.println(“(“+i+”,”+j+”)”); } } 5 solved Using for loop arraylist in Java