Hello Coders!

The 30th edition of Week of Code is here. 7 interesting challenges (one challenge is unlocked each day). The contest commences on on 13th March 2017 at 07:00 UTC, You can sign up for the contest here.

Top 10 on leaderboard get cool HackerRank T Shirts

Please try all problems, Editorials will be available at the end of contest.

GL&HF

Hi coders

Sears is hosting its first ever online Hackathon on HackerRank- Sear Dots & Arrows with some really big prizes on offer. Register yourself now at https://www.hackerrank.com/sears-dots-arrows

The contest commences on Sunday, 23 October at 5PM IST, and remains open for 7 hours.

• 1st prize — 400,000 INR
• 2nd prize — 200,000 INR
• 3rd prize — 100,000 INR
• 4th to 15th — I Pad
• 16th to 100 — 2,000 INR
• 101 to 200 — 1,500 INR

Prizes are only for Indian programmers residing in India.

Please check out the contest page (https://www.hackerrank.com/sears-dots-arrows) for more details on the contest.

UPD Final leaderboard is generated. Congratulations to the winners.

GL & HF

Hello coders

HackerRank presents a 24 hour regular expression contest Regular Expresso starting at 7 January 2016 at 17:30PM UTC

Allowed languages : Java, PHP, Perl, Ruby, Python with prewritten templates.

NOTE You can only submit the regular expression.

You can practice here https://www.hackerrank.com/domains/regex

T-Shirts for top 10
Tie breaking rule: Same score are sorted by total time taken since beginning of contest.
Scoring: Binary

GL&HF

Hi!

Ad Infinitum is back after a long break with 13th Edition, a contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum13
The contest commences on 23^rd October 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy(Tutorial), 3 Medium, 2 Hard)
Scoring Distribution: 20 25 30 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,

Contributers
Arterm
amitp08
zemen
scorpion
sevenkplus

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

Hello coders

Good luck to the qualified teams. And those who are not qualified can still participate in unofficial rankings.
World Cup Finals begins in a few hours at 16:00 UTC 26 September and will go on for 6 hours.

It's going to be a very interesting and difficult contest. You can participate in a team of upto 3 members.
There are no ratings for this contest.

GL&HF

https://www.youtube.com/watch?v=RHov5UDJnbQ

Week of code https://www.hackerrank.com/w17 is starting soon 31 August 16:00 UTC.

Monday to Friday Every day 1 challenge will go live.(Easy to Hard)
Score decreases by 10% at the end of every 24 hours.
Your submissions will run on hidden test cases at the end of every 24 hours.
time of each challenge will be counted since open, it allows you to start late.

Contest is prepared by CherryTree.
Contest is rated and top 10 get T shirts.

GL & HF

Hello CodeForces Community!

I am glad to share that HackerRank's CounterCode (CodeSprint on Algorithmic Programming Challenges) is scheduled on 1st-August-2015 at 16:00 UTC.

Go ahead and register now at www.hackerrank.com/countercode to show off your coding chops, and win amazing prizes like Apple iPhone 6, Sony PS4, Bose Headphones, Fitbit Charge, WD 1 TB HardDisk and HackerRank t-shirts!.

All participants who completely solve one challenge (that’s just 1 out of 8 questions!) will get $100 of AWS credits.

Also, you'll get an opportunity to connect for a career opportunity with CounterCode contest sponsors — Asana, Blippar, LaunchCode, Marketo and Verizon.

Contest will be rated, scoring is 20 — 30 — 50 — 70 — 100 — 120 — 140 — 150. Tiebreaker is person to reach the score.

Editorials will be live soon after the contest ends, I invite everyone from experts to beginners to participate and solve challenges. This is going to be a really awesome contest :)

GL&HF

Week of code https://www.hackerrank.com/w16 is starting soon 6 July 16:00 UTC. Please join.

Monday to Friday Every day 1 challenge will go live.(Easy to Hard)
Score decreases by 10% at the end of every 24 hours.
Your submissions will run on hidden test cases at the end of every 24 hours.
time of each challenge will be counted since open, it allows you to start late.

Top 10 get T shirts.

GL & HF

Hello CodeForces Community!

I am glad to share that HackerRank's EpicCode (Summer CodeSprint on Algorithmic Programming Challenges) is scheduled on 20-June-2015 at 16:00 UTC.

Go ahead and register now at www.hackerrank.com/epiccode to show off your coding chops, and win amazing prizes like GoPro Hero4, Oculus Rift Developers Kit Dk2, XBox One, Pebble Smart Watch, The Arduino Starter Kit, Raspberry Pi 2 and 100 HackerRank t-shirts!

All participants who completely solve one challenge (that’s just 1 out of 8 questions!) will get $100 of AWS credits.

Also, you'll get an opportunity to connect for a career opportunity with EpicCode contest sponsors — Amazon, Cogito API (Expert System), GoDaddy, iNautix, KCG, Location Labs, Pocket Gems, Rakuten, Salt, ShoreTel, Skyhigh and Vertafore.

Contest will be algorithms only and rated.

UPDATE Scoring is 20 — 30 — 30 — 50 — 70 — 80 — 120 — 150.
Tiebreaker is person to reach the score first.

GL&HF

HackerRank presents 15^th week of Weekly Contest.
The week long contest will begin on on 25^th May 16:00 UTC. We’ll put your coding skills to the test with 5 interesting challenges.

Each day you get to solve a challenge whose difficulty level increases as the week progresses. Challenge score will decrease by 10% every 24 hours. To solve the final challenge, you're given an entire weekend.

Tie-breaking rule: For each challenge, we calculate your solved time, t. [t = submit — open] where submit is the time you submitted the solution, and open is the time you opened the challenge. This way, you do not have to worry about solving the challenge as soon as it becomes available.

Top 10 on leaderboard will get a cool HackerRank T shirt.

You can visit the contest page in order to register.

Setters
MatRush
robinyu
Adigha
ma5termind
laoriu

Week 15

https://www.hackerrank.com/w15

Happy Coding!

Hi!

Ad Infinitum is back with 11th Edition, a contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum11
The contest commences on 16^th April 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy(Tutorial), 3 Medium, 2 Hard)
Scoring Distribution: 20 25 30 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,

Contributers
kevinsogo
bayleef
amitp08
oversolver
viv001

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

HackerRank presents 14^th week of Weekly Contest.
The week long contest will begin on on 9^th March 16:00 UTC. We’ll put your coding skills to the test with 5 interesting challenges.

Each day you get to solve a challenge whose difficulty level increases as the week progresses. Challenge score will decrease by 10% every 24 hours. To solve the final challenge, you're given an entire weekend.

Tie-breaking rule: For each challenge, we calculate your solved time, t. [t = submit — open] where submit is the time you submitted the solution, and open is the time you opened the challenge. This way, you do not have to worry about solving the challenge as soon as it becomes available.

Top 10 on leaderboard will get a cool HackerRank T shirt.

You can visit the contest page in order to register.

Week 14

https://www.hackerrank.com/w14

Happy Coding!

Hi!

Ad Infinitum is back with 10th Edition, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum10
The contest commences on 20^th February 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy(Tutorial), 3 Medium, 2 Hard)
Scoring Distribution: 20 20 20 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,
Special prizes and Job Opportunities for Indian participants.

Contributers
kevinsogo
bayleef
darkshadows
ma5termind

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

HackerRank presents 13^th week of Weekly Contest.
The week long contest will begin on on 5^th January 16:00 UTC. We’ll put your coding skills to the test with 5 interesting challenges.

Each day you get to solve a challenge whose difficulty level increases as the week progresses. Challenge score will decrease by 10% every 24 hours. To solve the final challenge, you're given an entire weekend.

The problem statements will be available in English, Russian, Chinese and Ukrainian

Contributers

• Amit Pandey amitp08
• Lalit Kundu darkshadows
• Sunny Aggarwal ma5termind
• Gerald Agapov Gerald

Tie-breaking rule: For each challenge, we calculate your solved time, t. [t = submit — open] where submit is the time you submitted the solution, and open is the time you opened the challenge. This way, you do not have to worry about solving the challenge as soon as it becomes available.

Top 10 on leaderboard will get a cool HackerRank T shirt.

You can visit the contest page in order to register.

Week 13

https://www.hackerrank.com/w13

Happy Coding!

Hi!

Ad Infinitum is back with 9th Edition, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum9
The contest commences on 12^th December 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy, 3 Medium, 2 Hard)
Scoring Distribution: 20 20 20 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,

Contributers
kevinsogo
oversolver
bayleef
amitp08
minimario

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

HackerRank presents 12^th week of Weekly Contest.
The week long contest will begin on on 17^th November 16:00 UTC. We’ll put your coding skills to the test with 5 interesting challenges.

Each day you get to solve a challenge whose difficulty level increases as the week progresses. Challenge score will decrease by 10% every 24 hours. To solve the final challenge, you're given an entire weekend.

The problem statements will be available in English, Russian, Chinese and Ukrainian

Contributers

• Ray Williams
• Ikbal Kazar ikbal
• Pawel Kacprzak pkacprzak
• Shashank Sharma
• Amit Pandey amitp08

Tie-breaking rule: For each challenge, we calculate your solved time, t. [t = submit — open] where submit is the time you submitted the solution, and open is the time you opened the challenge. This way, you do not have to worry about solving the challenge as soon as it becomes available.

Top 10 on leaderboard will get a cool HackerRank T shirt.

You can visit the contest page in order to register.

Week 12

https://www.hackerrank.com/w12

Happy Coding!

Hi!

Ad Infinitum is back with 8th Edition, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum8
The contest commences on 17^th October 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy, 3 Medium, 2 Hard)
Scoring Distribution: 20 25 30 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,

Contributers
kevinsogo
tmt514
oversolver
bayleef
devu
ssrsinghrajput
amitp08
abhra
aka_007

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

Hello Coders!

After a long break weekly contest is back .
Link http://hackerrank.com/w11
Starting today 6th October 16:00 UTC there will be 1 challenge posted daily in increasing order of difficulty.

Penalty will be (Submit — View) time, which allows you to start late. But if you delay by 24 hours 10% score gets decayed per day. More rules can be seen here

Challenge statement will be available in English, Russian and Chinese

Contributors
Day 1 darkshadows
Day 2 Anastasko
Day 3: ddldyj237
Day 4: vlade087
Day 5: CherryTree

GL & HF

Hello Coders,

Over the past couple of months we have worked on old nostalgic ProjectEuler problems and revived them with modern constraints and hidden test cases.

So far we have covered 52 Challenges and growing at a steady pace.

I invite you to join the fun :)

Contest Link : https://www.hackerrank.com/contests/projecteuler/challenges
Penalty is Submit_time — view_time

Hi!

Ad Infinitum is back with Infinitum September'14, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum-sep14
The contest commences on 19^th September 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the first challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 2 days contest with 8 problems (3 Easy, 3 Medium, 2 Hard)
Scoring Distribution: 20 25 30 40 60 80 100 120

Top 10 on leaderboard gets Cool HackerRank T shirt,

Contributers
kevinsogo
tmt514
sevenkplus
darkshadows
ssrsinghrajput
amitp08
aka_007
ikbal
oversolver

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

Hello Coders!

I invite you to participate in HackerRank's weekly contest.
Link http://hackerrank.com/w10
Starting today 8th September 16:00 UTC there will be 1 challenge posted daily in increasing order of difficulty.

Penalty will be (Submit — View) time, which allows you to start late. But if you delay by 24 hours 10% score gets decayed per day. More rules can be seen here

Challenge statement will be available in English, Russian, Chinese and Spanish

Contributors
Day 1 amitp08
Day 2 I_love_47
Day 3: pkacprzak
Day 4: vlade087
Day 5: CherryTree

P.S. For contribution you can contact me or mail to: hackers [at] hackerrank [dot] com

Hello Coders!

I invite you to participate in HackerRank's weekly contest.
Link http://hackerrank.com/w9
Starting today 25th August 16:00 UTC there will be 1 challenge posted daily in increasing order of difficulty.

Penalty will be (Submit — View) time, which allows you to start late. But if you delay by 24 hours 10% score gets decayed per day. More rules can be seen here

With new addition to our leaderboard you can see the time penalty on the leaderboard itself Example

Contributors
Day 1 & 2: amitp08
Day 3: shaka_shadows
Day 4: viv001
Day 5: CherryTree

P.S. For contribution you can contact me or mail to: hackers [at] hackerrank [dot] com

Hi!

Ad Infinitum is back with Infinitum August'14, a monthly contest restricted to mathematics domain, held on HackerRank.

Register at https://www.hackerrank.com/infinitum-aug14
The contest commences on 14^th August 15:30 UTC. You are allowed to enter the contest anytime, for tie breaking the timer will start when you view the challenge, which allows you to start late at your convenience, but once started try to finish as fast as possible to be on top of the leaderboard :)

It's a 3 days contest with 8 problems (3 Easy, 3 Medium, 2 Hard)
Scoring Distribution: 20 20 20 40 60 80 100 120

problem statements in English, Russian and Chinese

Top 10 on leaderboard gets Cool HackerRank T shirt,
Update: Everyone with full score will get a T shirt :D

Contributers
kevinsogo
tmt514
sevenkplus
abhra73
ma5termind
amitp08
devu
I_love_47

Detailed editorials will be available by the end of contest :) I suggest you to try all challenges and at the end of contest understand the solutions.

GL&HF

Hello Coders!

The July edition of 101 Hack is here. 5 interesting challenges in 2 hours. The contest commences on on 26th July 2014 at 13:00 UTC, You can sign up for the contest here.

The problem statements will be available in English, Russian and Chinese.
Top 10 on leaderboard get cool HackerRank T Shirts
Books for individual challenge-leaderboard toppers

Problem Setters
Gerald

Problem Tester
Bidhan

Please try all problems, Editorials will be available at the end of contest.

GL&HF