PRA15: A Matter of Life and Death
Find the length of the shortest path through a maze, given a limited number of passes through walls.
PRB15: Alien Username
In a galaxy far far away, a planet different from ours, computer usernames follow a different format.
PRA14: The Sphinx
For the past 200 years, the Sphinx has asked the same riddle, and afterhaving devoured the thousands of passersby who failed to answer herquestion, she is incredibly bored...
PRB14: The Dead Center of Battle
Under siege by the Greek army, the Trojans are desperately trying todefend their city from invasion. Do you choose to help them?
PRB13: College Credits, Here I Come
You just graduated from college and got that degree in Computer Science and you are ready to begin your journey out in the world.
PRA13: Food Poisoning
Figure out who's infected with chicken pox based on a set of transmission rules.
PRB12: Long Snapper
Find the length of the longest run in a string.
PRA12: A King's Match
Find the minimal total King distance from a point to all of the other points
PRB11: Scantron Score
Oh no! Your school's scantron machine seems to be broken and the repair man can't fix it in time! Can you use your super-human programming skills to save the day?
PRA11: Radar Crabs
Poseidon, the king of the Sea, needs your help to count the number of crabs in his army.
PRB10: FizzBuzz
Fizzzzzzz. Buzzzzzz. FizzzzBuzzzzz.
PRA10: String Modication
Roy was given a string s containing only uppercase English letters that he has to process. Can you help him out?
PRB9: Palindromesemordnilap
Output the length of the shortest palindrome containing the input as a contiguous substring.
PRA9: Seat Selection
Given the number of people and a skip count, determine where you should start to sit where you want.
PRB8: The Difference
Inspired by this comic, you decided to do an experiment to see how people will react to pulling a lever that zaps them.
PRA8: The Laziest of them All
Simon is a very lazy boy, who always sleeps in his Math class. One day his teacher catches him sleeping and tells him that she will fail him unless he can prove himself to her by answering her question. If Simon can answer it correctly, she will forgive him. Can you help him find the answer to this problem?
PRB7: What's Next?
Currently, Steve is learning about sequences and series in his math class, but he's having trouble identifying the next term in a sequence. Can you write a program to help out your friend?
PRA7: Save the Green. Make Less Cuts.
Barbara has decided to become a lumberjack! She's having some trouble on her first job at the company, so she needs your help to solve her problems...
PRB6: Turning the Tables
Rotato Farms needs your help again! They wanna hire you to fix their new issues...
PRA6: See No Evil, Speak No Evil
Great news! The jRobot Corporation, widely celebrated for its self-vacuuming Zoomba robot, is on the verge of completing its prototype ...
PRB5: Taking the (K)nots out of a String?
Your friend, Steve, has recently started a babysitting service, however some of the children have begun to be more troublesome...
PRA5: Tower of Hanoi
Since ancient times, the monks of Lucas' Tower have honored their most cryptic tradition.
PRB4: The Not-So-Secret Language
You've been brushing up on some history and discovered that Thomas Jefferson wrote using a special code with his friends!
PRA4: Equation Solver
After tutoring younger students for a while, you've come up with a brilliant solution to ease your workload...
PRB3: Intro to Statistics
You have recently been hired by a senior in high school taking AP Statistics to help him on his homework. Your mission, should you choose to accept it, is to ...
PRA3: A Classic - Knight's Tour
It is your turn to solve one of the most classic mathematical-based problems (dating all the way back to 9th century A.D.) using your advanced programming skills!
PRB2: Today's the Date
Your new client, Carlos, has been having some problems with his memory recently. He's wants you to write a program for him that...
PRA2: Step In, Don't Tire
The local police department has carefully selected you to help them with their new physical training program. I hope they know that you're a different type of programmer!
PRB1: First Submission
This is a special challenge to make you familiar with IO.
PRA1: Hired!
You've been hired by Rotato Farms Inc. to write a program that calculates the GCD between two given numbers. Only one problem...