Button action calls for an action when user tap on a button. This may be for making a service call, for doing some calculation or simply just to dismiss a view. Here are the different ways of setting button action in different languages. Java Python (TKinter) JavaScript: Swift Kotlin These examples demonstrate how to set… Read More »
In Android development with Kotlin, you can arrange UI elements programmatically by creating and configuring EditText and Button widgets and setting their layout parameters. Here’s an example of how you can arrange a username field, password field, login button, and forgot credential button in Kotlin programmatically: In this example: This is a basic example, and… Read More »
To set up auto layout for a username field, password field, login button, and forgot credential button programmatically in Swift, you can use the NSLayoutConstraint class to define the relationships between these UI elements. Here’s an example of how you can do this: This example creates and configures UITextField and UIButton instances, adds them to… Read More »
1. Syntax ErrorExample: 2. IndentationErrorExample: Explanation: Python relies on indentation to define block structures. The print statement is not properly indented under the if statement, leading to an indentation error. 3.NameErrorExample: Explanation: The variable y is not defined before trying to print it, resulting in a NameError. It’s worth noting that the examples provided are… Read More »
Python: JavaScript: Java: These solutions check if a string can be converted into a palindrome by allowing at most k deletions. The is_palindrome function is used to check if a given substring is a palindrome. The Java solution includes a main method for example usage. Asked By: Google
To convert a date from Central Standard Time (CST) to Indian Standard Time (IST), you need to consider the time zone difference between these two zones. Below are examples in Swift : Swift: Java: Python: JavaScript: These examples assume a specific date and time format. You should adjust the date format and time zone identifiers… Read More »
Pythonfrom datetime import datetimedate_object = datetime.now()date_string = date_object.strftime(“%Y-%m-%d %H:%M:%S”)print(date_string) JavaScriptconst currentDate = new Date();const dateString = currentDate.toISOString(); // Adjust the format as neededconsole.log(dateString); Javaimport java.text.SimpleDateFormat;import java.util.Date; public class DateToString {public static void main(String[] args) {Date currentDate = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss”);String dateString = dateFormat.format(currentDate);System.out.println(dateString);}} Rubyrequire ‘date’current_date = DateTime.nowdate_string = current_date.strftime(‘%Y-%m-%d %H:%M:%S’)puts date_string… Read More »
Video Tutorial Lets understand this with an example we are going to create a basic counter example here using bloc and cubit. Here are the key differences between Bloc and Cubit in Flutter: Both Bloc and Cubit are part of the broader Flutter Bloc library and adhere to the principles of reactive programming. Your choice… Read More »
Given a string, return the length of the longest palindromic subsequence in the string. For example, given the following string: MAPTPTMTPA Return 7, since the longest palindromic subsequence in the string is APTMTPA. Recall that a subsequence of a string does not have to be contiguous! Your algorithm should run in O(n^2) time and space.… Read More »
insert(key: str, value: int): Set a given key’s value in the map. If the key already exists, overwrite the value. sum(prefix: str): Return the sum of all values of keys that begin with a given prefix. For example, you should be able to run the following code: mapsum.insert(“columnar”, 3) assert mapsum.sum(“col”) == 3 mapsum.insert(“column”, 2)… Read More »
You are given N identical eggs and access to a building with k floors. Your task is to find the lowest floor that will cause an egg to break, if dropped from that floor. Once an egg breaks, it cannot be dropped again. If an egg breaks when dropped from the xth floor, you can… Read More »
Given a list of numbers, create an algorithm that arranges them in order to form the largest possible integer. For example, given [10, 7, 76, 415], you should return 77641510. Javascript function largestNumber(nums) { nums.sort((a, b) => { const order1 = String(a) + String(b); const order2 = String(b) + String(a); return order2.localeCompare(order1); … Read More »
Python Java Javascript These implementations use the Morris Traversal algorithm to perform in-order traversal without using any additional space other than O(1). The algorithm establishes temporary links between nodes and their predecessors, allowing efficient traversal and processing of the tree nodes. Note: The code examples assume that the tree nodes have a val, left, and… Read More »
Introduction: When it comes to developing cross-platform mobile applications, Flutter and React Native have emerged as the two dominant frameworks. As developers seek to create high-performing apps, it’s crucial to understand the performance capabilities of each framework. In this article, we will delve into the performance aspects of Flutter and React Native, examining their strengths… Read More »
Example 1: ClipRRect dartCopy codeClipRRect( borderRadius: BorderRadius.circular(10.0), child: Image.asset(‘assets/images/image.jpg’), ) In this example, the ClipRRect widget is used to clip the child Image with rounded corners. The borderRadius property defines the radius of the corners. Example 2: BoxDecoration dartCopy codeContainer( decoration: BoxDecoration( borderRadius: BorderRadius.circular(10.0), image: DecorationImage( image: AssetImage(‘assets/images/image.jpg’), fit: BoxFit.cover, ), ), ) Here, a… Read More »
Given an absolute pathname that may have . or .. as part of it, return the shortest standardized path. For example, given “/usr/bin/../bin/./scripts/../”, return “/usr/bin/”. To obtain the shortest standardized path from an absolute pathname that may contain “.” or “..” as part of it, you can follow these steps: Here’s an example Python code… Read More »
In this example, we create a simple Flutter application that displays a counter and increments the count when a FloatingActionButton is pressed. The state management is handled by Riverpod. Here’s a breakdown of the code: When you run this code, you will see a simple app with an app bar, a counter in the center… Read More »
The game ends either when one player creates a line of four consecutive discs of their color (horizontally, vertically, or diagonally), or when there are no more spots left in the grid. Design and implement Connect 4. To design and implement Connect 4, we can follow these steps: Here’s an example implementation of Connect 4… Read More »
Given a number in Roman numeral format, convert it to decimal. The values of Roman numerals are as follows: { ‘M’: 1000, ‘D’: 500, ‘C’: 100, ‘L’: 50, ‘X’: 10, ‘V’: 5, ‘I’: 1 } In addition, note that the Roman numeral system uses subtractive notation for numbers such as IV and XL. For the… Read More »
We say a number is sparse if there are no adjacent ones in its binary representation. For example, 21 (10101) is sparse, but 22 (10110) is not. For a given input N, find the smallest sparse number greater than or equal to N. Do this in faster than O(N log N) time. Solution in Java… Read More »
Given a string of digits, generate all possible valid IP address combinations. IP addresses must follow the format A.B.C.D, where A, B, C, and D are numbers between 0 and 255. Zero-prefixed numbers, such as 01 and 065, are not allowed, except for 0 itself. For example, given “2542540123”, you should return [‘254.25.40.123’, ‘254.254.0.123’]. To… Read More »
Let’s learn how to implement MVVM in Android. It’s actually really simple. ViewModel is just another class that that implements the main Business Logic. ViewModel is a middle man between your view and your Data class(Repo/any Data Provider). It can be represented simply like this. Here the View just displays the data. ViewModel doesn’t know… Read More »
In this article, we will see how we can use BLoc to Theme your app in Flutter. To understand BLoC with a real world example, you can refer to my previous post on BLoC here. Part 1 Part 1 For this demo also we will need the below plugins If you follow my previous tutorial,… Read More »
In this article we are gonna talk about how to use YouTube API’s and play YouTube videos in Flutter. Watch Video Tutorial Add Dependencies Open pubspec.yaml file in your Flutter project and add below dependencies Now, Let’s create two screens Home Screen Video Player Screen In the HomeScreen we will show the list of videos.… Read More »