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 …
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403 articles about python development, tools, and best practices
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? …
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