APL Problem Solving Competition

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The APL Problem Solving Competition was a yearly contest hosted by Dyalog Ltd. During the Dyalog user meeting that followed shortly after the competition closed, the winners were announced, followed by presentations by the grand prize winner and the professional prize winner. In 2024, the competition was replaced by the new APL Challenge and the new APL Forge.

The APL Quest is a series of chat events and follow-up videos addressing the Phase 1 problems of past years.

2009

Announcement and about the grand prize winner

Grand Prize Ronald Chan Auckland, New Zealand
2nd Place Chris King Brown University, Rhode Island USA
3rd Place Maks Verver The Netherlands

2010

About the winners

Grand Prize Ryan Tarpine Brown University, Providence, Rhode Island, USA.
2nd Place Mstislav Elagin Humboldt-Universität zu Berlin, Germany
3rd Place Joel Hough Salt Lake Community College, Kaysville Utah, USA
Special Effort Alexander Ivanov Moscow Institute for Physical Research

2011

About the winners

Grand Prize Joel Hough The University of Utah, USA
2nd Place Yanqing Chen Stony Brook University, New York, USA
3rd Place Elliot Way Binghamton University, New York, USA

2012

Announcement and about the winner

Grand Prize Hayato Hashimoto Kyoto University, Japan

2013

Announcement and about the winners

Grand Prize Yanqing Chen Stony Brook University, USA
2nd Place Maks Verver The Netherlands
3rd Place Chao Xu University of Illinois, Urbana-Champaign, USA

2014

Announcement

About the winners This was the first year in which a prize was offered to non-student entrants.

Grand Prize Emil Bremer Orloff Aarhus University, Denmark
2nd Place Seán Kelleher University College Cork, Ireland
3rd Place Chao Xu University of Illinois, Urbana-Champaign, U.S.A
Professional Prize Iryna Pashenkovska SimCorp Ukraine
Honourable mention Jan-Pieter Jacobs Universiteit Antwerpen, Belgium
Christopher Zhang State University of New York at Binghamton, U.S.A.

2015

Announcement

About the winners

Grand Prize Arianna Locatelli Liceo Classico S. M. Legnani, Saronno, Italy
2nd Place Joshua (Josh) David University of Scranton, USA
3rd Place Dragana Babić University of Novi Sad, Serbia
Professional Prize Roberto Szabó
Honourable mention Alexander Kuhnle Cambridge University, U.K.
Luyang Du State University of New York at Binghamton, U.S.A.

2016

Announcement

About the winners

This round of the competition offered 3 grand prizes, one each in the subject domains of finance, general computing and bioinformatics.

Grand Prize (Finance) Janos (Zack) Batik University of Cape Town, South Africa
Grand Prize (General Computing) Joshua (Josh) David University of Scranton, USA
Grand Prize (Bioinformatics) Marinus Oosters Universiteit Utrecht, The Netherlands
Professional Prize Mike Powell
Runner-up (Finance) Rafael Rodrigues Fundação Getulio Vargas, Brazil
Runner-up (General Computing) Imaculate Mosha University of Cape Town, South Africa
Runner-up (Bioinformatics) Louis de Forcrand Ecole Moser, Switzerland

2017

Announcement

About the winners

Grand Prize Kostas Blekos Panepistimion Patron, Greece
2nd Place Douglas Patz Agile Learning Center, New York City, USA
3rd Place Zachary Taylor Maryville High School, USA
Professional Prize Mike Powell
Phase I Armando Cruz Universidad Nacional Autónoma de México, Mexico
Ivan Demianchuk National Taras Shevchenko University of Kyiv, Ukraine
Yash Garg Indian Institute of Technology, Delhi, India
Arna Ghosh Indian Institute of Technology, Kharagpur, India
Akarsh Ramesh Khatagalli Visvesvaraya Technological University, India
Phase I Aiken Cairncross University of Oxford, UK
Yu-Chi Chiang National Central University, Taiwan
Anthony Cipriano Gustav-Stresemann Gymnasium, Germany
Ivan Demianchuk National Taras Shevchenko University of Kyiv, Ukraine
Tripti Garg NorthCap University, India
Arna Ghosh Indian Institute of Technology, Kharagpur, India
Bertil Johnson University of Kentucky, USA
Mohammed Malik Copenhagen International School, Denmark
Douglas Patz Agile Learning Center, New York, USA
Zachary Taylor Maryville High School, USA

2018

Announcement

About the winners

Grand Prize Alve Björk Uppsala University, Sweden
2nd Place Lynn Van Hauwe University of Antwerp, Belgium
3rd Place Rafael Rodrigues Rocha de Melo Kyoto University, Japan
Professional Prize Tiziano Berghi SimCorp Italiana
Phase II Dinesh Poudel Jaya Multiple Campus, Nepal
Douglas Patz Agile Learning Center, New York, U.S.A.
Joe Robertson St. Peter's High School, Gloucester, U.K.
K C Unesh Kathmand University, Nepal
P R Vaidyanathan Indian Institute of Technology Gandhinagar, India
Phase I Alejandra González Universidad Technológica Nacional – Instituto Nacional Superior del Profesorado Técnico, Argentina
Dimitri Lozeve University of Oxford, U.K.
Dinesh Poudel Jaya Multiple Campus, Nepal
Douglas Patz Agile Learning Center, New York, U.S.A.
Du Xi Australian National University, Australia
Lynn Van Hauwe University of Antwerp, Belgium
Mohammed Malik Turku International School, Finland
P R Vaidyanathan Indian Institute of Technology Gandhinagar, India
Rafael Rodrigues Rocha de Melo Kyoto University, Japan
K C Unesh Kathmand University, Nepal

Published solutions

2019

Announcement

About the winners

Grand Prize Jamin Wu Monash University, Australia
2nd Place Rasmus Précenth Uppsala University, Sweden
3rd Place Douglas Patz Agile Learning Center, New York City, USA
Professional Prize Torsten Grust University of Tübingen, Germany
Phase II Fredrik Mattisson Uppsala University, Sweden
Joe Robertson Durham University, U.K.
Louis de Forcrand Geneva University, Switzerland
P R Vaidyanathan Indian Institute of Technology Gandhinagar, India
Rafael Rodrigues Rocha de Melo Kyoto University, Japan
Phase I David Cao University of California: San Diego, U.S.A.
Douglas Patz Agile Learning Center, New York, U.S.A.
Dzintars Klušs Riga State Gynmasium No. 1, Latvia
Fredrik Mattisson Uppsala University, Sweden
Louis de Forcrand Geneva University, Switzerland
Maksim Podkorytov Florida State University, Florida, U.S.A.
Mohammed Malik Turku International School, Finland
P R Vaidyanathan Indian Institute of Technology Gandhinagar, India
Rasmus Précenth Uppsala University, Sweden
Zoe Kane Greenville Technical College, South Carolina, U.S.A.

Published solutions

2020

Announcement

About the winners

Grand Prize Andrii Makukha University of Hong Kong, China
2nd Place Dzintars Klušs Riga State Gymnasium No. 1, Latvia
3rd Place Joshua King University of New South Wales, Australia
Professional Prize Woosuk Kwak South Korea
Phase II Brendan King Rose-Hulman Institute of Technology, Indiana, U.S.A.
Federico Landonio Liceo Scientifico GB Grassi Saronno, Italy
Iiro Tapio Rastas University of Turku, Finland
Louis de Forcrand Geneva University, Switzerland
Zoe Kane Greenville Technical College, South Carolina, U.S.A.
Phase I Chiang Yu-Chi National Central University, Taiwan
Dzintars Klušs Riga State Gymnasium No. 1, Latvia
Federico Landonio Liceo Scientifico GB Grassi Saronno, Italy
Joel Niemelä home schooling, Texas, U.S.A.
Joshua King University of New South Wales, Australia
Maksim Podkorytov Florida State University, Florida, U.S.A.
Mattia Borgo University of Padua, Italy
Mohammed Malik University of Pavia, Italy
Rafael Rodrigues Rocha de Melo Kyoto University, Japan
Zoe Kane Greenville Technical College, South Carolina, U.S.A.

Published solutions

2021

The 2021 round began on February 21 and closed on July 30.[1]

Winners

Announcement and biographies.

Grand Prize Dzintars Klušs Riga State Gymnasium No. 1, Latvia
2nd Place Victor Ogunlokun Obafemi Awolowo University, Nigeria
3rd Place Aaron Paterson Quinnipiac University, Connecticut, U.S.A.
Special Recognition Mehdi Zribi Liceo Scientifico GB Grassi Saronno, Italy
Professional Prize Julian Witte Germany
Phase II Alessandro Bassi Liceo Scientifico GB Grassi Saronno, Italy
Rory Kemp Edinburgh Academy, U.K.
Federico Landonio Liceo Scientifico GB Grassi Saronno, Italy
Douglas Patz home schooled, New York, U.S.A.
Qifan Wang Auburn University, Alabama, U.S.A.
Phase I Joseph Adams Heinrich Heine University Düsseldorf, Germany
Mattia Borgo University of Padua, Italy
Peter Mikkelsen Aalborg University, Denmark
Raghu Ranganathan SRM Institute of Science and Technology, India
Rafael Rodrigues Rocha de Melo Kyoto University, Japan
Vladimir Sotirov University of Wisconsin-Madison, Wisconsin, U.S.A.
Oskar von Seeler Georg August University of Göttingen, Germany
Qifan Wang Auburn University, Alabama, U.S.A.
Chiang Yu-Chi National Taiwan University of Science and Technology, Taiwan
Mehdi Zribi Liceo Scientifico GB Grassi Saronno, Italy

Published solutions

2022

The 2022 round began on March 22 and closed on July 29.[2]

Winners

Announcement and biographies.

Grand Prize Tzu-Ching Lee National Tsing Hua University, Taiwan
2nd Place Rory Kemp Edinburgh Academy, U.K.
3rd Place Dzintars Klušs Rīgas Tehniskā Universitāte (Riga Technical University), Latvia
Professional Prize Michael Higginson Canada
Phase II Brian Ellingsgaard Klaksvik Technical School, Faroe Islands
Sergey Ichtchenko University of Helsinki, Finland
Ajai Nelson Oberlin College, Ohio, U.S.A.
Oskar von Seeler Georg August University of Göttingen, Germany
Mehdi Zribi Liceo Scientifico GB Grassi Saronno (GB Grassi Scientific High School in Saronno), Italy
Phase I Mattia Borgo University of Padua, Italy
Ronzoni Gabriele Liceo Scientifico GB Grassi Saronno (GB Grassi Scientific High School in Saronno), Italy
Sergey Ichtchenko University of Helsinki, Finland
Rory Kemp Edinburgh Academy, U.K.
Dzintars Klušs Riga Technical University, Latvia
Natanael Lundberg Grillska gymnasiet Uppsala (Uppsala High School), Sweden
Raghu Ranganathan SRM Institute of Science and Technology, India
Oskar von Seeler Georg August University of Göttingen, Germany
Kamila Szewczyk I Liceum Ogólnokształcące (Warsaw High School), Poland
Mehdi Zribi Liceo Scientifico GB Grassi Saronno (GB Grassi Scientific High School in Saronno), Italy

Published solutions

2023

The 2023 round began on March 6 and closed on July 28.[3]

Winners

Announcement and biographies.

Grand Prize Andrea Piseri Università degli Studi di Milano (University of Milan), Italy
2nd Place Rory Kemp University of Oxford, U.K.
3rd Place Dzintars Klušs Rīgas Tehniskā Universitāte (Riga Technical University), Latvia
Professional Prize Alexander Block
Phase II Kamila Szewczyk Universität des Saarlandes (Saarland University), Germany
Madeline Vergani Liceo Statale Scientifico e Classico "E. Majorana", Desio (Scientific and Classical State High School “E. Majorana”), Italy
Daniel Vlasits University of Cambridge, U.K.
Oskar von Seeler Georg-August-Universität Göttingen (Georg August University of Göttingen), Germany
Qifan Wang Auburn University, Alabama, U.S.A.
Phase I Brian Ellingsgaard Tekniski Skúli í Klaksvík (Klaksvik Technical School), Faroe Islands
Mitchell Johnstone Milwaukee School of Engineering, Wisconsin, U.S.A.
Federico Landonio Università degli Studi di Milano (University of Milan), Italy
Tzu-Ching Lee National Tsing Hua University, Taiwan
Andrea Piseri Università degli Studi di Milano (University of Milan), Italy
Gabriele Ronzoni Università degli Studi di Milano (University of Milan), Italy
Kamila Szewczyk Universität des Saarlandes (Saarland University), Germany
Madeline Vergani Liceo Statale Scientifico e Classico "E. Majorana", Desio (Scientific and Classical State High School “E. Majorana”), Italy
Oskar von Seeler Georg-August-Universität Göttingen (Georg August University of Göttingen), Germany
Mehdi Zribi Politecnico di Milano (Polytechnic University of Milan), Italy

References

  1. ↑ Dyalog Ltd. 2021 APL Problem Solving Competition Announced by Dyalog Ltd. News about Dyalog. Feb 12, 2021.
  2. ↑ Dyalog Ltd. 2022 APL Problem Solving Competition Announced by Dyalog Ltd. News about Dyalog. Mar 22, 2022.
  3. ↑ Dyalog Ltd. 2023 APL Problem Solving Competition Announced by Dyalog Ltd. News about Dyalog. Mar 6, 2023.
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