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How to Count the Characters in Python

January 5, 2022

Python

The challenge The goal of this challenge is to write a function that takes two inputs: a string and a character.

How to Install Cuda driver for Nvidia on Ubuntu

January 4, 2022

Aws , CLI , Ubuntu

If you have just upgraded Ubuntu on your AWS g4dn instance and need to install/reinstall Cuda drivers for your Nvidia chipset, then you can run the following:

How to List all Running Services on Ubuntu

January 3, 2022

CLI , Linux , Ubuntu

If you need to view a list of all the services that are either running or stopped (or both) on an Ubuntu server, then you can use the following command:

[Solved] conflict: unable to remove repository reference in Docker

January 2, 2022

Docker

If you get the following error while trying to delete an image in Docker:

How to Upgrade an Ubuntu Server

January 1, 2022

Linux , Ubuntu

Upgrading an Ubuntu Server is quite easy, just follow the below commands:

How to Solve Two-Sum in Java

December 31, 2021

Java

The challenge Write a function that takes an array of numbers (integers for the tests) and a target number.

How to Sort the Gift Code in Java

December 30, 2021

Java

The challenge Santa’s senior gift organizer Elf developed a way to represent up to 26 gifts by assigning a unique alphabetical character to each gift.

How to get the Numericals of a String in Java

December 29, 2021

Java

You are given an input string. For each symbol in the string if it’s the first character occurrence, replace it with a ‘1’, else replace it with the amount of times you’ve already seen it.

How to Replace Noun Phrases with Pronouns in Golang

December 28, 2021

The challenge A Noun Phrase is a phrase that can be replaced by a pronoun [he/she/it].

Maximum Positive Integer Rotations in Golang

December 27, 2021

The challenge Write function MaxRot(n) which given a positive integer n returns the maximum number you got doing rotations similar to the above example.

How to “Dashatize It” in Java

December 26, 2021

Java

The challenge Given a variable n, If n is an integer, Return a string with dash'-'marks before and after each odd integer, but do not begin or end the string with a dash mark.

How to create a Nickname Generator in Python

December 25, 2021

Python

The challenge Write a nickname generator function, nicknameGenerator that takes a string name as an argument and returns the first 3 or 4 letters as a nickname.

Comparing Array Multiplicities in Java

December 24, 2021

Java

The challenge Given two arrays a and b write a function comp(a, b) (orcompSame(a, b)) that checks whether the two arrays have the “same” elements, with the same multiplicities.