Exercises on the Bash Track | Exercism

Hello World

The classical introductory exercise. Just say "Hello, World!"

Two Fer

Create a sentence of the form "One for X, one for me."

control flow conditionals

text formatting

Error Handling

Implement various kinds of error handling and resource management

input validation

Raindrops

Convert a number to a string, the contents of which depend on the number's factors.

control flow conditionals

input validation

Hamming

Calculate the Hamming difference between two DNA strands.

control flow loops

string comparison

Acronym

Convert a long phrase to its acronym

input validation

string transformation

Armstrong Numbers

Determine if a number is an Armstrong number

Pangram

Determine if a sentence is a pangram.

string transformation

Bob

Bob is a lackadaisical teenager. In conversation, his responses are very limited.

control flow conditionals

Scrabble Score

Given a word, compute the scrabble score for that word.

Grains

Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.

control flow conditionals

input validation

Reverse String

Reverse a string

Difference Of Squares

Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.

control flow conditionals

control flow loops

Leap

Given a year, report if it is a leap year.

control flow conditionals

input validation

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.

associative arrays

control flow loops

Anagram

Given a word and a list of possible anagrams, select the correct sublist.

control flow conditionals

control flow loops

string transformation

Collatz Conjecture

Calculate the number of steps to reach 1 using the Collatz conjecture

control flow conditionals

input validation

Nucleotide Count

Given a DNA string, compute how many times each nucleotide occurs in the string.

control flow loops

string comparison

Phone Number

Clean up user-entered phone numbers so that they can be sent SMS messages.

control flow conditionals

string comparison

string transformation

Triangle

Determine if a triangle is equilateral, isosceles, or scalene.

input validation

number comparison

Word Count

Given a phrase, count the occurrences of each word in that phrase.

control flow loops

string comparison

Gigasecond

Given a moment, determine the moment that would be after a gigasecond has passed.

Luhn

Given a number determine whether or not it is valid per the Luhn formula.

control flow conditionals

Atbash Cipher

Create an implementation of the atbash cipher, an ancient encryption system created in the Middle East.

pattern matching

Roman Numerals

Write a function to convert from normal numbers to Roman Numerals.

Affine Cipher

Create an implementation of the Affine cipher, an ancient encryption algorithm from the Middle East.

Isogram

Determine if a word or phrase is an isogram.

Diamond

Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.

string transformation

ISBN Verifier

Check if a given string is a valid ISBN-10 number.

string transformation

All Your Base

Convert a number, represented as a sequence of digits in one base, to any other base.

Allergies

Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.

bitwise operations

Beer Song

Produce the lyrics to that beloved classic, that field-trip favorite: 99 Bottles of Beer on the Wall.

text formatting

control flow loops

Food Chain

Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'

text formatting

control flow loops

Forth

Implement an evaluator for a very simple subset of Forth

control flow conditionals

input validation

string comparison

Resistor Color Duo

Convert color codes, as used on resistors, to a numeric value.

control flow conditionals

Binary Search

Implement a binary search algorithm.