Exercises on the Delphi Pascal 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."

optional values

Leap

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

control flow if else statements

Gigasecond

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

Resistor Color

Convert a resistor band's color to its numeric representation

Space Age

Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.

floating point numbers

High Scores

Manage a player's High Score list

Hamming

Calculate the Hamming difference between two DNA strands.

Nucleotide Count

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

Robot Name

Manage robot factory settings.

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

Grade School

Given students' names along with the grade that they are in, create a roster for the school

Rotational Cipher

Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.

Circular Buffer

A data structure that uses a single, fixed-size buffer as if it were connected end-to-end.

Clock

Implement a clock that handles times without dates.

structural equality

Bob

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

control flow if else statements

Matching Brackets

Make sure the brackets and braces all match.

Tournament

Tally the results of a small football competition.

Reverse String

Reverse a string

Sum Of Multiples

Given a number, find the sum of all the multiples of particular numbers up to but not including that number.

Series

Given a string of digits, output all the contiguous substrings of length `n` in that string.

Collatz Conjecture

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

control flow conditionals

control flow loops

Armstrong Numbers

Determine if a number is an Armstrong number

Rational Numbers

Implement rational numbers.

operator overloading

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.

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 loops

Grains

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

Pangram

Determine if a sentence is a pangram.

ETL

We are going to do the `Transform` step of an Extract-Transform-Load.

Raindrops

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

Binary Search

Implement a binary search algorithm.

Phone Number

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

Scrabble Score

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

Proverb

For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output the full text of this proverbial rhyme.

Protein Translation

Translate RNA sequences into proteins.

Perfect Numbers

Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for natural numbers.

Triangle

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

Beer Song

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

Sieve

Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.

Queen Attack

Given the position of two queens on a chess board, indicate whether or not they are positioned so that they can attack each other.

Robot Simulator

Write a robot simulator.

Isogram

Determine if a word or phrase is an isogram.

Secret Handshake

Given a decimal number, convert it to the appropriate sequence of events for a secret handshake.

bitwise operations

Kindergarten Garden

Given a diagram, determine which plants each child in the kindergarten class is responsible for.

Saddle Points

Detect saddle points in a matrix.

Bank Account

Simulate a bank account supporting opening/closing, withdraws, and deposits of money. Watch out for concurrent transactions!

Acronym

Convert a long phrase to its acronym

Matrix

Given a string representing a matrix of numbers, return the rows and columns of that matrix.

Twelve Days

Output the lyrics to 'The Twelve Days of Christmas'

Anagram

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

Word Count

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

Prime Factors

Compute the prime factors of a given natural number.

Meetup

Calculate the date of meetups.

All Your Base

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

Pascal's Triangle

Compute Pascal's triangle up to a given number of rows.

control flow loops

ISBN Verifier

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

pattern matching

Markdown

Refactor a Markdown parser

Book Store

To try and encourage more sales of different books from a popular 5 book series, a bookshop has decided to offer discounts of multiple-book purchases.

control flow loops

Roman Numerals

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

control flow loops

Binary Search Tree

Insert and search for numbers in a binary tree.

Minesweeper

Add the numbers to a minesweeper board

Parallel Letter Frequency

Count the frequency of letters in texts using parallel computation.

Atbash Cipher

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

Food Chain

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

Crypto Square

Implement the classic method for composing secret messages called a square code.

OCR Numbers

Given a 3 x 4 grid of pipes, underscores, and spaces, determine which number is represented, or whether it is garbled.

pattern recognition

Luhn

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

Bowling

Score a bowling game

control flow loops

Nth Prime

Given a number n, determine what the nth prime is.

Pig Latin

Implement a program that translates from English to Pig Latin

Palindrome Products

Detect palindrome products in a given range.

Poker

Pick the best hand(s) from a list of poker hands.

Wordy

Parse and evaluate simple math word problems returning the answer as an integer.

Diamond

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

Say

Given a number from 0 to 999,999,999,999, spell out that number in English.

Darts

Write a function that returns the earned points in a single toss of a Darts game

floating point numbers