In Java, the HashMap class provides a convenient method called computeIfAbsent() that allows you to retrieve a value from the map based on a key, and if the key is not present in the map, it computes a new value using a specified function and adds it to the map. Here’s an example of using …
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Java Hashmap keySet() Example
In Java, a HashMap is a collection that stores key-value pairs. The keySet() method of the HashMap class returns a set of all keys contained in the map. Here’s an example of using the keySet() method to iterate over all keys in a HashMap: In this example, we create a new HashMap called map and …
Java Hashmap entrySet() Example wpaccuracy
In Java, a HashMap is a collection that stores key-value pairs. The entrySet() method of the HashMap class returns a set of all key-value mappings contained in the map. Here’s an example of using the entrySet() method to iterate over all entries in a HashMap: In this example, we create a new HashMap called map …
Python Global keyword Example wpaccuracy
Sure! In Python, the global keyword is used inside a function to indicate that a variable is a global variable, rather than a local variable. This means that the variable can be accessed and modified both inside and outside of the function. Here’s an example: In this example, we define a global variable count with …
Create a function in Python with example wpaccuracy
Certainly! Here is an example of a simple function in Python that takes two numbers as arguments and returns their sum: In this function, add_numbers, we define two parameters num1 and num2, which represent the two numbers we want to add together. Inside the function, we create a new variable called sum that is assigned …
Understanding Python function parameter vs argument wpaccuracy
In Python, a function is a block of code that performs a specific task when called. When calling a function, you may need to pass some input values to the function, and these values are called arguments. Function parameters, on the other hand, are the variables declared in the function definition that are used to …
Save to File in Python
To save data to a file in Python, you can use the built-in open() function, which opens a file for writing. Here’s an example: In this example, open(‘data.txt’, ‘w’) opens a file named “data.txt” for writing. The ‘w’ argument tells Python to open the file in write mode. If the file doesn’t exist, it will …
Efficiently Find Folder Directories in Python
To efficiently find folder directories in Python, you can use the os module. The os module provides a range of functions that allow you to interact with the operating system, including functions for working with files and directories. Here is an example of how to find all the directories in a given path using the …
Python Techniques to Count Most Frequent Items in a List
Python offers several techniques to count the most frequent items in a list. Here are some of the most common ones: Output: Output: Output: Overall, which method you choose to count the most frequent items in a list depends on the size of your dataset, your familiarity with different Python libraries, and the level of …
Python Program to Find Prime Numbers from 1 to 100
Here’s a Python program to find prime numbers from 1 to 100: Output: This program uses a function is_prime() to check if a given number is prime or not. It then loops through numbers from 1 to 100 and prints the prime numbers. The is_prime() function uses a basic algorithm that checks for divisibility by …