How to do Binary Addition in Python
The challenge
Implement a function that adds two numbers together and returns their sum in binary. The conversion can be done before or after the …
Read Article →Python
329 articles about python development, tools, and best practices
How to Auto-Adjust Excel column widths with pandas.ExcelWriter
You have successfully written your pandas Dataframe to an Excel file, but when you open it, all the columns are squashed up against each other.
There …
Read Article →How to Sort the Odd in Python
The challenge
You will be given an array of numbers. You have to sort the odd numbers in ascending order while leaving the even numbers at their …
Read Article →Calculate the Sum of the two lowest positive integers in Python
The challenge
Create a function that returns the sum of the two lowest positive numbers given an array of minimum 4 positive integers. No floats or …
Read Article →Unique In Order in Python
The challenge
Implement the function unique_in_order which takes as argument a sequence and returns a list of items without any elements with the same …
How to Replace Characters with Alphabet Positions in Python
The challenge
Given a string, replace every letter with its position in the alphabet.
If anything in the text isn’t a letter, ignore it and …
Read Article →Returning Highest and Lowest in Python
The challenge
You are given a string of space-separated numbers and have to return the highest and lowest number.
Example:
high_and_low("1 2 3 4 …How to Subtract Arrays in Python
The challenge
Implement a difference function, which subtracts one list from another and returns the result.
It should remove all values from list a, …
How to Solve Pascal’s Triangle in Python
The challenge
Given an integer numRows, return the first numRows of Pascal’s triangle.
In Pascal’s triangle, each number is the sum of the …
Read Article →How to Sum The Strings in Python
The challenge
Create a function that takes 2 nonnegative integers in form of a string as an input, and outputs the sum (also as a string):
Example: ( …
Read Article →Playing with passphrases in Python
The challenge
Everyone knows passphrases. One can choose passphrases from poems, songs, movies names and so on but frequently they can be guessed due …
Read Article →Find the Max Area of an Island in Python
The challenge
You are given an m x n binary matrix grid. An island is a group of 1‘s (representing land) connected 4-directionally (horizontal or …
A Simplistic TCP Finite State Machine (FSM) in Python
The challenge
Automatons, or Finite State Machines (FSM), are extremely useful to programmers when it comes to software design. You will be given a …
Read Article →How to Build a Square in Python
The challenge
I will give you an integer. Give me back a shape that is as long and wide as the integer. The integer will be a whole number between 1 …
Read Article →Check if String EndsWith in Python
The challenge
Complete the solution so that it returns true if the first argument(string) passed in ends with the 2nd argument (also a string). …
Read Article →How to LowerCase a String in Python
Python comes with a built-in method on all String types, by calling lower() on a String, you can immediately lower the case of that String.
An example …
Read Article →Number to Binary Conversion in Python
If you have a decimal number, and want to get it’s binary value, you can use the built-in bin method.
decimal = 32
binary = bin(decimal)
# …Counting Binary Gaps with Python
The challenge
A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the …
Read Article →How to Convert an Int to a List of Ints in Python
The challenge
Given a non-negative integer, return an array / a list of the individual digits in order.
Examples:
123 => [1,2,3]
1 => [1] …How to Create a Circular List in Python
The challenge
Create a Circular List
A circular list is of finite size, but can infititely be asked for its previous and next elements. This is …
Read Article →Who is going to pay for the wall? in Python
The challenge
Don Drumphet lives in a nice neighborhood, but one of his neighbors has started to let his house go. Don Drumphet wants to build a wall …
Read Article →Find the missing element between two arrays in Python
The challenge
Given two integer arrays where the second array is a shuffled duplicate of the first array with one element missing, find the missing …
Read Article →Remove an Exclamation Mark from the End of String using Python
The challenge
Remove a exclamation mark from the end of string. You can assume that the input data is always a string, no need to verify it.
Examples …
Read Article →Compare within Margin using Python
The challenge
Create a function close_compare that accepts 3 parameters: a, b, and an optional margin. The function should return whether a is lower …