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PL/SQL track
Exercises
Exercises on the PL/SQL track
Join the PL/SQL Track
11 exercises to help you master PL/SQL
easy
Hello World
The classical introductory exercise. Just say "Hello, World!"
misc
easy
Hamming
Calculate the Hamming difference between two DNA strands.
misc
easy
Gigasecond
Calculate the moment when someone has lived for 10^9 seconds.
misc
easy
RNA Transcription
Given a DNA strand, return its RNA Complement Transcription.
misc
easy
Raindrops
Convert a number to a string, the contents of which depend on the number's factors.
misc
easy
Difference Of Squares
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
math
easy
Roman Numerals
Write a function to convert from normal numbers to Roman Numerals.
misc
easy
Nth Prime
Given a number n, determine what the nth prime is.
math
easy
Leap
Given a year, report if it is a leap year.
misc
easy
Grains
Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.
misc
easy
Binary
Convert a binary number, represented as a string (e.g. '101010'), to its decimal equivalent using first principles
math