Check if List contains Item in Python
The challenge
Create a method that accepts a list and an item, and returns true if the item belongs to the list, otherwise false.
Test cases
list = …Technical Articles
In-depth guides, insights, and best practices for modern software engineering
How To Create a User and Grant Permissions in MySQL
How to create a user
CREATE USER 'myuser'@'localhost' IDENTIFIED BY 'mypassword';
How to delete a user
DROP USER …How to Remove Vowels with Python
The challenge
Create a function called shortcut to remove all the lowercase vowels in a given string.
Examples
shortcut("codewars") # --> …How to find all files in a directory with extension
I needed to find all files in a directory on Linux that ended with the file extension .php.
How to find all files in a directory with extension
You …
Read Article →How to Sort a List in Python
In this tutorial, you will learn how to sort a list in Python, by following the below three steps:
- Options to sort a list in Python
- What is the …
Cryptanalysis Word Patterns in Java
The challenge
In cryptanalysis, words patterns can be a useful tool in cracking simple ciphers.
A word pattern is a description of the patterns of …
Read Article →How to divide a number in Python
The challenge
Your task is to create functionisDivideBy (or is_divide_by) to check if an integer number is divisible by each out of two arguments.
A …
Read Article →How to Read Kubernetes Secrets
Kubernetes secrets is a great way to store secret values that only Kubernetes can access in your hosted applications.
There are times when you might …
Read Article →Backspaces in String Challenge using Java
The challenge
Assume "#" is like a backspace in string. This means that string "a#bc#d" actually is "bd"
Your task is to …
Read Article →How many times to Kaprekar’s constant using Python
Introduction
6174 is known as Kaprekar’s constant after the Indian mathematician D. R. Kaprekar. This number is notable for the following rule: …
Read Article →How to check if a String is a Number in Python
The challenge
Given a string s, write a method (function) that will return true if its a valid single integer or floating number or false if its not. …
Read Article →How to Write a Custom Comparator in Python
Generally, you want to use the built-in sorted() function which takes a custom comparator as its parameter. We need to pay attention to the fact that …