Convert a LinkedList to a String in Python
The challenge
Preloaded for you is a class, struct, or derived data type Node (depending on the language) used to construct linked lists in this …
Python
329 articles about python development, tools, and best practices
Find the Number With Most Digits (Python)
The challenge
Find the number with the most digits in a list of positive integers. If two numbers have the same number of digits, return the first one …
Read Article →Check if all Values in Array are Smaller in Python
The challenge
You will be given an array and a limit value. You must check that all values in the array are below or equal to the limit value. If they …
Maximum Product from List of Integers in Python
The challenge
Given an array of integers, Find the maximum product obtained from multiplying 2 adjacent numbers in the array.
Notes
- Array/list size …
Sum of Array Singles in Python
The challenge
You are given an array of numbers in which two numbers occur once and the rest occur only twice. Your task is to return the sum of the …
Read Article →Flatten and Sort an Array in Python
The challenge
Given a two-dimensional array of integers, return the flattened version of the array with all the integers in the sorted (ascending) …
Read Article →Playing the Alphabet War in Python
The challenge
Introduction
There is a war and nobody knows – the alphabet war!
There are two groups of hostile letters. The tension between left side …
Sum of numbers from 0 to N in Python
The challenge
We want to generate a function that computes the series starting from 0 and ending until the given number.
Example:
Input: > 6 …
Read Article →Sorted? yes? no? how? ..in Python
The challenge
Complete the method which accepts an array of integers, and returns one of the following:
"yes, ascending"– if the numbers …
How to Fix String Casing in Python
The challenge
You will be given a string that may have mixed uppercase and lowercase letters and your task is to convert that string to either …
Read Article →How to Remove Duplicate Words from a String in Python
The challenge
Remove all duplicate words from a string, leaving only single (first) words entries.
Example:
Input:
‘alpha beta beta gamma gamma gamma …
Read Article →How to Validate a Regex PIN Code in Python
The challenge
ATM machines allow 4 or 6 digit PIN codes and PIN codes cannot contain anything but exactly 4 digits or exactly 6 digits.
If the …
Read Article →Combine strings and remove duplicates in Python
The challenge
Take 2 strings s1 and s2 including only letters from ato z. Return a new sorted string, the longest possible, containing distinct …
Return Short Long Short in Python
The challenge
Given 2 strings, a and b, return a string of the form short+long+short, with the shorter string on the outside and the longer string on …
Hello, Name or World in Python
The challenge
Define a method hello that returns “Hello, Name!” to a given name, or says Hello, World! if name is not given (or passed as …
Add Length to Strings in Python
The challenge
What if we need the length of the words separated by a space to be added at the end of that same word and have it returned as an array? …
Read Article →How to Reversing Words in a String in Python
The challenge
Write a function that reverses the words in a given string. A word can also fit an empty string. If this is not clear enough, here are …
Read Article →How to Remove Duplicates from List in Python
The challenge
Define a function that removes duplicates from an array of numbers and returns it as a result.
The order of the sequence has to stay the …
Read Article →How to Format Dollars and Cents in Python
The challenge
The company you work for has just been awarded a contract to build a payment gateway. In order to help move things along, you have …
Read Article →Return `5` without any numbers in Python
The challenge
Write a function that always returns 5
Sounds easy right? Just bear in mind that you can’t use any of the following characters: …
Read Article →How to Generate Range of Integers in Python
The challenge
Implement a function named generateRange(min, max, step), which takes three arguments and generates a range of integers from min to max, …
Read Article →How to Calculate Powers of 2 in Python
The challenge
Complete the function that takes a non-negative integer n as input, and returns a list of all the powers of 2 with the exponent ranging …
How to Get Planet Name By ID in Python
The challenge
Create a function that takes in an id and returns the planet name.
The solution in Python code
Option 1:
def get_planet_name(id): …How to Make a Directory if Not Exists in Python
If you want to create a directory in Python, but only if it doesn’t exist, you have the following option.
This comes up constantly when writing …
Read Article →