The big O complexity of the algorithm is O(N) where N is the array size. You cannot improve on that … for the arguments provided and producing the same output. There are some things that can be done to improve efficiency though. Hint: look for a computation that is performed on each loop iteration that … Read more
You can try swaping first and last char value like below. =========================================== String s = “asd321tre2”; char[] charr = s.toCharArray(); int end = 0; for (int i = s.length(); i <= 0; i–) { if (Character.isLetter(charr[i])) { end = i; } } String output = charReplace(end, charr); } private static String charReplace(int end, char[] ch) … Read more
first of all change this line of code: mPagerAdapter = new ScreenSlidePager.ScreenSlidePagerAdapter(getSupportFragmentManager()); to this: mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager()); it seems you copied your adapter from another page change place you are defining your pager: private ViewPager mPager; above the onCreate 8 solved Determine why my android app crashes upon opening [duplicate]
Introduction Android is a powerful platform for developing mobile applications. It provides a wide range of features and capabilities that can be used to create powerful and engaging applications. One of the most important features of Android is its ability to receive and parse JSON data. JSON (JavaScript Object Notation) is a lightweight data-interchange format … Read more
From the documentation: public class NoSuchElementException extends RuntimeException Thrown by the nextElement method of an Enumeration to indicate that there are no more elements in the enumeration. However, when I tried your code on Eclipse, it’s running free of errors. But when I tried it on Code Playground, it gave me the same error. You … Read more
Introduction This article will provide a step-by-step guide on how to convert an image inputstream to a PDF inputstream in Java. We will discuss the various methods available to achieve this conversion, as well as the advantages and disadvantages of each approach. We will also provide code snippets to help you get started. By the … Read more
How can I tell if one of my values is/are null? One way is to learn to read the stack trace that you are getting. (We could maybe help you with that, if you showed it to us.) Another way is to test the value to see if it is null. Is there a test? … Read more
Introduction String manipulation is a common task in programming, and Java provides a number of ways to split a string at a specific separator. In this article, we will discuss how to split a string at the n’th occurrence of a specific separator in Java. We will look at various examples and discuss the different … Read more
Introduction Objects in Java are used to store data and can be manipulated in various ways. One of the most common ways to manipulate an object is to change its contents. This can be done by using the setter methods of the object. In this article, we will discuss how to change the contents of … Read more
Introduction When dealing with double data types, it is important to be aware of the potential for errors when dividing two numbers. This is because double data types are stored in binary form, which can lead to rounding errors when performing calculations. In this article, we will discuss the causes of wrong answers when dividing … Read more
Introduction The Java Matcher class is a powerful tool for extracting data from strings. It can be used to extract two numbers from a string, which can be useful for a variety of applications. This tutorial will explain how to use the Matcher class to extract two numbers from a string. It will also provide … Read more
Introduction Threaded programming is a powerful tool for creating efficient and reliable applications. It allows multiple tasks to be executed simultaneously, which can greatly improve the performance of an application. However, it can be difficult to get the desired output from a threaded program. This article will provide some tips on how to get your … Read more
Introduction Instance variables are an important part of object-oriented programming, as they allow us to store data associated with an object. When a superconstructor is used, the instance variables created within it can be accessed and changed by the subclass. In this article, we will discuss how to access and change the instance variables created … Read more
Your first understanding is wrong. what i understood from my past experiences is .nextInt() or .nextDouble() would keep on searching until the integer or the double is found in the same or the next line it doesn’t matter nextInt() and nextDouble() waits for the integer and double respectively. If it gets string instead of it’s … Read more
There are many ways to implement Arrays::toString, here are a few examples: import java.util.Arrays; import java.util.StringJoiner; import java.util.stream.Collectors; public class ArraysToString { public static void main(String[] args) { int[] array = {10, 16, 181, 200, 410, 68, 31, 555, 161, 313}; System.out.println(Arrays.toString(array)); System.out.println(arrayToString1(array)); System.out.println(arrayToString2(array)); System.out.println(arrayToString3(array)); System.out.println(arrayToString4(array)); // [10, 16, 181, 200, 410, 68, 31, 555, … Read more