README.md

100 Programming Languages

This repository tracked a misguided quest to write code in 100 different programming languages, specifically by solving the first 100 Project Euler problems, using a different--and, ideally, new to me--language for each problem.

Note: my understanding is that educational sharing of methods and solutions for (only!) the first 100 Project Euler problems is currently allowed. Spoiler alert!

Suggest Improvements

Most of these languages were new to me, so my solutions aren't always the best examples (esp. the Julia one). If you're experienced with one of these languages and are willing to share a more idiomatic solution, open a pull request! I'll leave the PR open (so it's clear it's not my code) and link it in the table below.

The List

(PR) indicates someone has shared a more idiomatic solution in a pull request.

#	Problem	Language	Solution
1	Multiples of 3 or 5	SIC-1 Assembly Language	p1.sic1
2	Even Fibonacci Numbers	SectorLISP	p2.lisp
3	Largest Prime Factor	Fortran	p3.f90
4	Largest Palindrome Product	J	p4.ijs
5	Smallest Multiple	Gforth	p5.fth
6	Sum Square Difference	Standard ML (SOSML)	p6.sml
7	10001st Prime	Squeak (2.2)	p7.st
8	Largest Product in a Series	SQL (SQLite)	p8.sql
9	Special Pythagorean Triplet	XSLT	p9.xsl
10	Summation of Primes	COBOL-85	p10.cbl
11	Largest Product in a Grid	Perl	p11.pl
12	Highly Divisible Triangular Number	WebGPU Shading Language	p12.wgsl (HTML host)
13	Large Sum	AWK	p13.awk
14	Longest Collatz Sequence	WebAssembly (Text Format)	p14.wat
15	Lattice Paths	Scratch	p15.sb3
16	Power Digit Sum	Commodore BASIC (2.0)	p16.bas
17	Number Letter Counts	Verilog	p17.v
18	Maximum Path Sum I	XOD	p18.xodball (screenshot)
19	Counting Sundays	EXA (TEC Redshift)	p19.exa (disc)
20	Factorial Digit Sum	BBC BASIC	p20.bas
21	Amicable Numbers	Unison	p21.u
22	Names Scores	TCL	p22.tcl
23	Non-Abundant Sums	Lil	p23.lil
24	Lexicographic Permutations	PostScript	p24.ps
25	1000-digit Fibonacci Number	fe	p25.fe
26	Reciprocal Cycles	x86 assembly (BIOS)	p26.asm (boot sector)
27	Quadratic Primes	RetroForth	p27.forth
28	Number Spiral Diagonals	Uxntal	p28.tal
29	Distinct Powers	APL	p29.apl (PR)
30	Digit Fifth Powers	Factor	p30.factor
31	Coin Sums	Rebol	p31.r
32	Pandigital Products	Bash	p32.sh
33	Digit Cancelling Fractions	Julia	p33.jl
34	Digit Factorials	Piet	p34.png (ppm, scaled)
35	Circular Primes	Turbo Pascal (7.0)	p35.pas
36	Double-base Palindromes	Hare	p36.ha
37	Truncatable Primes	Wren	p37.wren
38	Pandigital Multiples	Pkl	p38.pkl
39	Integer Right Triangles	قلب	p39.qlb
40	Champernowne's Constant	Roc	p40.roc
41	Pandigital Prime	wax	p41.wax
42	Coded Triangle Numbers	Boron	p42.b
43	Sub-string Divisibility	Self	p43.self
44	Pentagon Numbers	Haskell	p44.hs
45	Triangular, Pentagonal, and Hexagonal	文言	p45.wy
46	Goldbach's Other Conjecture	Idris	p46.idr
47	Distinct Primes Factors	Nim	p47.nim
48	Self Powers	Min	p48.min
49	Prime Permutations	Cakelisp	p49.cake
50	Consecutive Prime Sum	F#	p50.fs
51	Prime Digit Replacements	Haxe	p51.hx
52	Permuted Multiples	Amiga Basic	p52.bas
53	Combinatoric Selections	K (oK)	p53.k (PR)
54	Poker Hands	TypeScript (type system only)	p54.ts
55	Lychrel Numbers	Blazin' Forth	p55.forth (.d64 image)
56	Powerful Digit Sum	G-Pascal	p56.pas
57	Square Root Convergents	Scheme	p57.scm
58	Spiral Primes	BCPL	p58.b
59	XOR Decryption	MATLAB (GNU Octave)	p59.m
60	Prime Pair Sets	MoonScript	p60.moon
61	Cyclical Figurate Numbers	Fennel	p61.fnl
62	Cubic Permutations	Erde	p62.erde
63	Powerful Digit Counts	Hy	p63.hy (PR)
64	Odd Period Square Roots	PureScript	p64.purs
65	Convergents of e	Ruby	p65.rb
66	Diophantine Equation	Reason	p66.re
67	Maximum Path Sum II	T3X/0	p67.t
68	Magic 5-gon Ring	AssemblyScript	p68.ts
69	Totient Maximum	MiniLang	p69.ml
70	Totient Permutation	C (C99)	p70.c
71	Ordered Fractions	Clojure	p71.clj
72	Counting Fractions	Zig	p72.zig
73	Counting Fractions in a Range	Raku	p73.raku
74	Digit Factorial Chains	Vala	p74.vala
75	Singular Integer Right Triangles	Odin	p75.odin
76	Counting Summations	QBasic	p76.bas
77	Prime Summations	Hazel	p77.hazel
78	Coin Partitions	Ada	p78.adb
79	Passcode Derivation	Shen	p79.shen
80	Square Root Digital Expansion	Python	p80.py
81	Path Sum: Two Ways	Pre-Scheme	p81.scm
82	Path Sum: Three Ways	LO	p82.lo
83	Path Sum: Four Ways	Kitten	p83.ktn
84	Monopoly Odds	Common Lisp	p84.lisp
85	Counting Rectangles	Bend	p85.bend
86	Cuboid Route	V	p86.v
87	Prime Power Triples	Lobster	p87.lobster
88	Product-sum Numbers	Dylan	p88.dylan
89	Roman Numerals	Janet	p89.janet
90	Cube Digit Pairs	Quackery	p90.qky
91	Right Triangles with Integer Coordinates	ATS	p91.dats
92	Square Digit Chains	Mouse-83	p92.mou
93	Arithmetic Expressions	Cyber	p93.cy
94	Almost Equilateral Triangles	Futhark	p94.fut
95	Amicable Chains	Varyx	p95.vx
96	Su Doku	Prolog (SWI-Prolog)	p96.pro
97	Large Non-Mersenne Prime	8080 assembly (Altair 8800)	p97.asm
98	Anagramic Squares	Rye	p98.rye (PR)
99	Largest Exponential	Rexx	p99.rex
100	Arranged Probability	Nelua	p100.nelua