# Delphi Pascal

When you're logged in, you can say `exercism fetch delphi` to get the next available exercise on the track.

Every time you submit a solution to an exercise, you will get the next in line the next time you fetch.

If you want to try a specific exercise, you can always fetch it directly (commands are listed below).

The exercises are ordered roughly in order of difficulty.

### Available Exercises

• Hello World The classical introductory exercise. Just say "Hello, World!"
• Two Fer Create a sentence of the form "One for X, one for me."
• Reverse String Reverse a string
• Bob Bob is a lackadaisical teenager. In conversation, his responses are very limited.
• Leap Given a year, report if it is a leap year.
• Space Age Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.
• Isbn Verifier Check if a given string is a valid ISBN-10 number.
• Rna Transcription Given a DNA strand, return its RNA Complement Transcription.
• Raindrops Convert a number to a string, the contents of which depend on the number's factors.
• Hamming Calculate the Hamming difference between two DNA strands.
• Bank Account Simulate a bank account supporting opening/closing, withdraws, and deposits of money. Watch out for concurrent transactions!
• Nucleotide Count Given a DNA string, compute how many times each nucleotide occurs in the string.
• Etl We are going to do the `Transform` step of an Extract-Transform-Load.
• Grains Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.
• Grade School Given students' names along with the grade that they are in, create a roster for the school
• Collatz Conjecture Calculate the number of steps to reach 1 using the Collatz conjecture
• Armstrong Numbers Determine if a number is an Armstrong number
• Beer Song Produce the lyrics to that beloved classic, that field-trip favorite: 99 Bottles of Beer on the Wall.
• Phone Number Clean up user-entered phone numbers so that they can be sent SMS messages.
• Proverb For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output the full text of this proverbial rhyme.
• Secret Handshake Given a decimal number, convert it to the appropriate sequence of events for a secret handshake.
• Perfect Numbers Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for natural numbers.
• Binary Search Implement a binary search algorithm.
• Clock Implement a clock that handles times without dates.
• Triangle Determine if a triangle is equilateral, isosceles, or scalene.
• Allergies Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.