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Articles on Trending Technologies
Technical articles with clear explanations and examples
Java program to compare two sets
The given task is to write Java programs that compare two sets and check if they are equal or not. Here, Set is an interface of the Java Collection Framework that extends the Collection interface and stores unique elements. Set depicts the features of a mathematical set. Hence, it allows all those operations that we can perform on a mathematical set, such as union, comparison, intersection, etc. Since Set is an interface, we can't use its functionalities directly. For this purpose, we need a TreeSet class that implements the Set Interface and can access its methods. How to Compare Two Sets in ...
Read MoreWhat are the differences between JTextField and JTextArea in Java?
The main difference between JTextField and JTextArea in Java is that a JTextField allows entering a single line of text in a GUI application while the JTextArea allows entering multiple lines of text in a GUI application. JTextField The following are the key characteristics of JTextField in Java: A JTextFeld is one of the most important components that allow the user to an input text value in a single line format. A JTextField will generate an ActionListener interface when we trying to enter some input inside it. The JTextComponent is a superclass of JTextField that provides a common set ...
Read MoreConvert a C++ String to Upper Case
In C++, converting a string into uppercase means changing all the characters into uppercase. This is a common requirement in many applications, such as formatting output, standard data input, and case sensitivity. Following is the table that shows the conversion of string to uppercase: String Case Characters Uppercase Characters ...
Read MoreC++ Program to Convert Octal Number to Binary Number
In a computer system, the binary number is expressed in the binary numeral system while the octal number is in the octal numeral system. The binary number is in base 2 while the octal number is in base 8. Here, we provide the tabular data to understand binary numbers and their corresponding octal numbers as follows: Octal Number ...
Read MoreUnderstanding cin.clear() and cin.ignore() in C++
When we attempt to work with user input in C++, unwanted behavior may be caused by errors or leftover characters in the input buffer. So, in that case cin.clear() and cin.ignore() are functions that can help in dealing with this kind of problem. cin.clear() cin.ignore() cin.clear and cin.ignore() cin.clear() The cin.clear() resets the error flags on the cin stream and is used when an input operation fails (e.g., entering a non-numeric value for an integer variable). Without clearing the error flags, further input operations will not work. ...
Read MoreWhy is it considered a bad practice to omit curly braces in C/C++?
In C/C++, omitting the curly braces assumes that only the first statement is the block and this leads to quite a few issues during debugging, as code is pretty tough to read and comprehend. Curly braces help us prevent errors and confusion, which also helps with the flow of the program. Proper Use of Curly Braces In C++, we can omit the curly braces after if-else statements, or after any loop. If we do not use curly braces, then only one statement after the if-else or loop will be considered under that block. Syntax The following is the syntax: − ...
Read MoreC++ Program to Print only Odd Numbered Levels of a Tree
In C++, to print the odd-numbered levels of a binary tree, the levels are numbered from the root as Level 1. The odd-numbered levels are Level 1, Level 3, and so on. This program prints the nodes present at these odd levels. It uses level-order traversal to process the tree level by level and prints the nodes found at these levels. Algorithm to Print only Odd Numbered Levels of a Tree Following is the Algorithm to print odd numbered levels of a tree − Create a structure for tree nodes with data and pointers to left ...
Read MoreC++ program to convert Fahrenheit to Celsius
To convert fahrenheit to celsius, use a simple mathematical formula. In this article, we are going to discuss the conversion formula, a simple example, and an easy example code. We have been given a temperature in fahrenheit and our task is to convert the given temperature into celsius using C++. Understanding Fahrenheit to Celsius Formula The formula for converting the given temperature from fahrenheit to celsius is as follows: celsius = (fahrenheit - 32.0) * 5.0 / 9.0; Let's see an example to convert the temperature given in fahrenheit to celsius using the above formula: Input: Temperature in ...
Read MoreC++ Program to Find the GCD and LCM of n Numbers
The gcd refers to 'Greatest Common Divisor', i.e. greatest common number which can divide all the given numbers. The lcm refers to the 'Least Common Multiple' i.e. the lowest common multiple of all the numbers. To find the gcd and lcm of n numbers in C++, we can use various approaches like iterative approach, or built-in C++ functions. In this article, we are having 'n' number of elements, our task is to find the gcd and lcm of n number of elements using C++. Example Here is an example of GCD and LCM of 4 numbers: Input: Numbers = ...
Read MoreHow do I convert a double into a string in C++?
A double datatype is used to represent a decimal or exponential value and string represents a sequence of characters. In this article, we are having a double value and our task is to convert the given double into string. Here is a list of approaches to convert double to string in C++ that we will be discussing in this article with stepwise explanation and complete example codes. Using to_string() Function Using ostringstream Using stringstream Using sprintf() Function Using ...
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