XOR, p ^ q, can be expressed using the and (&), or (|), and not/invert (~) bitwise operators as (p & q) | ~(p & q) (see Wikipedia’s exclusive or article). Hence, we can now simulate an XOR with the other bitwise operators to do the usual swap. int x = 1; int y = … Read more
Please stop with those for loops. Don’t invent everything new. Know the API. List<String> valuesList = Arrays.asList(array).subList(x, y); String newValuesString = String.join(“,”, valuesList); 3 solved for loop iteration – how to avoid comma
I believe the the theme is not calendar sorting. If so then do not allocate more memory using Calender object, add this method simply, public class ProgramItem { …. int getAsMins() { return hours *60 + mins; } } …. Collections.sort(items, new Comparator<ProgramItem>() { public int compare(ProgramItem item1, ProgramItem item2) { return item1.getAsMins() – item2.getAsMins(); … Read more
Try this, if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { mScrollView.setOnScrollChangeListener(new View.OnScrollChangeListener() { @Override public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) { if (scrollY > 0 && fab2.isShown()) { fab2.setVisibility(View.GONE); } else if (scrollY < 0) { fab2.setVisibility(View.VISIBLE); } } }); } else { mScrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() { @Override public void onScrollChanged() { int … Read more
A isn’t a valid character literal – ‘A’ is. So you want: switch (grade) { case ‘A’: nv[i] = 4; //nv = numerical value break; case ‘B’: nv[i] = 3; break; case ‘C’: nv[i] = 2; break; case ‘D’: nv[i] = 1; break; case ‘F’: nv[i] = 0; break; } You should also probably have … Read more
First, you need absolutly the header (.h) containing the function declaration. Secondly, you have to create a folder that contains your .so file, you can name it for example jniLibs and put it in src/main/jniLibs, then add the sourceSets to you gradle file, into the android block : sourceSets { main { jniLibs.srcDirs = [‘src/main/jniLibs’] … Read more
If you just want to define a method for creating a MenuItem, then it’s easy enough: you just need to decide on the functional interface you will need for the parameter that takes the method reference (or lambda, etc). E.g. if the method signature takes no parameters and has void return type, you could use … Read more
Maybe right logic is: if(xposition == ( (oposition-1) && (oposition != 12 && oposition != 8 && oposition != 4) ) ) If you have a lot of numbers: int[] numbers = { 12, 8, 4, 13, 2, 7 }; boolean validation = true; for (int i : numbers) { if (oposition == i) { … Read more
If you want to test Java code and don’t have access to a development environment, you can still use a public service like ideone.com. I did that for you over here. Your program prints y is:1 y is:2 y is:3 y is:4 y is:5 y is:6 y is:7 y is:8 y is:9 solved Result of … Read more
Try to split that string like: String[] numbers = sb.toString().split(” “);//if spaces are uneven, use \\s+ instead of ” ” for (String number : numbers) { list.add(Integer.valueOf(number)); } 4 solved Converting a StringBuilder To Integer Values In Java [duplicate]
I would use a command line interface with python, but I know you would prefer C# or java. If you want to make a graphical interface use java, but I do not know much about C#, only C++. if they are alike with the libraries, then use C# for a command line interface like on … Read more
Something like this DateFormat sdf = new SimpleDateFormat(“hh:mm”); Date date = sdf.parse(time); 2 solved Convert only time part in android from string to time
First, analyse your code, Have a look at block case 3: { System.out .println(“You head towards Moat Caillin. the journey is swift and you are greeted by the Lord of Moat Caillin”); System.out .println(“The Lord of Moat Caillin offers your his company for dinner. type in your desired option”); System.out.println(“1: accept the lords offer.”); System.out.println(“2: … Read more
You’re using standard quotes instead of backticks for escaping the MySql reserved word KEYS. Change the table name to any non-reserved word so that the quotes can be removed. 1 solved SQL syntax error in “insert into ‘keys'(a,b,c,d,e) values(?,?,?,?,?)” [closed]
Here’s my guess: Intent i = new Intent(SplashScreen.this, MainActivity.class); startActivity(i); solved Write the name of a parent file (.intent) [closed]