Unofficial Uiuisms
| Reverse each row of an array | ≡⇌ [1_2_3 4_5_6] | Pad |
| Get the sum of an array | /+ [1 2 3 4 5] | Pad |
| Get the product of an array | /× [1 2 3 4 5] | Pad |
| Get the maximum value in an array | /↥ [1 4 5 3 2] | Pad |
| Get the minimum value in an array | /↧ [1 4 5 3 2] | Pad |
| Sort an array | ⊏⍏. [1 4 5 3 2] | Pad |
| Get n numbers between 0 and 1 exclusive | ÷⟜⇡ 10 | Pad |
| Get n numbers between 0 and 1 inclusive | ÷-1⟜⇡ 11 | Pad |
| Create a zero matrix | ↯⟜⊚ 5 | Pad |
| Create an identity matrix | ⊞=.⇡ 5 | Pad |
| Create an X matrix | ↥⇌.⊞=.⇡ 5 | Pad |
| Create a zero matrix of the same shape as another | ≠. [1_1 2_2] | Pad |
| Create a 0xN matrix | ↯0⊚ 2 | Pad |
| Replace all NaNs in an array with a value | ↧⊸↥ 0 [1 2 NaN 4 NaN] | Pad |
| Check if character is numeric [0-9] | ×⊓≥≤@0,@9 "hi-5!" | Pad |
| Check if character is letter [a-zA-Z] | ↥∩×∩⊓≥≤@a,@z,@A,@Z "oiCu812α" | Pad |
| Check if character is alphabetic | ⌵± "oiCu812α" | Pad |
| Check if an array is a palindrome | ≍⇌. "racecar" | Pad |
| Convert a number to a string | °⋕ 17 | Pad |
| Convert a string to a number | ⋕ "42" | Pad |
| Convert a string to a list of code points | -@ "Uiua" | Pad |
| Convert a list of code points to a string | +@ [85 105 117 97] | Pad |
| Convert a list to a string | /$"_, _" [10 20 30 40] | Pad |
| Parse a string as a base 2 number | °⋯⇌-@0 "110" | Pad |
| Parse a string as a base 3 <= X <= 9 number | /+×ⁿ⇌⇡⧻,⊙-:@0 3 "210" | Pad |
| Interleave two arrays | ♭⍉⊟ [1 2 3 4] [5 6 7 8] | Pad |
| Intersperse an item between the rows of an array | ↘1♭≡⊂ π [1 2 3 4] | Pad |
| Get the cycling windows of an array | ◫⊙⊂⊃⊙∘(↙-1) 3 ⇡7 | Pad |
| Get all permutations of size N | ◴≡⍏☇1⇡▽. 3 | Pad |
| Split an array at an index | ⊃↙↘ 3 [1 2 3 4 5] | Pad |
| Insert a value into an array at an index | ⍜⊙↻⊂ π 3 [1 2 3 4 5] | Pad |
| Split an array by a delimiter | ⊜□≠, @, "split,this,up" | Pad |
| Split an array by a delimiter with fill elements | ⬚@ ⊜∘≠, @, "split,this,up" | Pad |
| Split an array by a delimiter keeping empty segments | ⊕□⍜▽¯⟜\+=, @, "split,this,,up" | Pad |
| Split an array into groups of contiguous equal elements | ⊜□. [1 1 1 2 2 1 1 4] | Pad |
| Join a list of boxed strings | /◇⊂ {"a" "bc" "def"} | Pad |
| Find the nth fibonacci number | ⊢⍥(⇌\+):1_0 10 | Pad |
| Find the GCD of two numbers | ◌⍢⊃◿∘± 35 360 | Pad |
| Remove all instances of an element from a list | ▽≠, 4 [1 4 2 0 5 4 3] | Pad |
| Remove first instance of an element from an array | ⍜↻(↘1)⊸⊗ 4 [1 4 2 0 5 4 3] | Pad |
| Remove the nth element from an array | ⍜↻(↘1) 4 [1 4 2 0 5 4 3] | Pad |
| Remove all instances of a row from an array | ▽¬≡≍,¤ 2_0 [1_4 2_0 5_3 2_0] | Pad |
| Filter by a fixed predicate | ▽ =0◿3 . ⇡10 | Pad |
| Find the most common row in an array | ⍜⊛(⊢⍖°⊚) "Hello World!" | Pad |
| Convert a string to uppercase | ⌵ "These are Words" | Pad |
| Convert a string to lowercase | ¯⌵ "These are Words" | Pad |
| Check if a string is in a list of strings | ∊□ "uiua" {"apl" "bqn" "uiua"} | Pad |
| Trim leading whitespace | ▽\↥≠@ . " ← remove these" | Pad |
| Trim trailing whitespace | ▽⍜⇌\↥≠@ . "remove these → " | Pad |
| Trim prefix-matching characters from a set | ▽¬\↧∊, "abc" "ccab ← remove this" | Pad |
| Trim suffix-matching characters from a set | ▽¬⍜⇌\↧∊, "abc" "remove this → bcaa" | Pad |
| Trim whitespace | ▽×⍜⇌∩\↥.≠@ . " abc xyz " | Pad |
| Upscale a 2d matrix or colored image | 30 [0_1 3/4_1/4] ▽⟜≡▽ 30 [[0_0_1 0_1_0] [1_0_0 0_0_0]] ▽⟜≡▽ | Pad |
| Linearly interpolate between two values | ⍜-× 10 0 0.2 ⍜⊙-× 0.2 10 0 | Pad |
| Set the value of an array at an index | ⍜⊡◌ 2 1_2_3_4 10 | Pad |
| Create a matrix of random 0s or 1s | ⁅⊞⋅⋅⚂.⊚ 5 | Pad |
| Create a matrix of random numbers | ⌊×⊞⋅⋅⚂.⊚ 5 10 | Pad |
| Arithmetic mean | ÷⧻⟜/+ [85 105 117 97] | Pad |
| Geometric mean | ⁿ÷:1⧻⟜/× [85 105 117 97] | Pad |
| Harmonic mean | ÷/+⟜⧻÷:1 [85 105 117 97] | Pad |
| Quadratic mean | √÷⧻⟜/+×. [85 105 117 97] | Pad |
| Median | ÷2/+⊏⊟⊃⌊⌈÷2-1⧻.⊏⍏. [85 105 117 97] | Pad |
| Dot product | /+× [1 2 3] [4 ¯5 6] | Pad |
| Cross product | 1_2_3 4_5_6 ↻2-∩(×↻2):,, | Pad |
| Matrix product | [7_8_9 10_11_12] [1_2 3_4 5_6] ⍜⍉⊞(/+×) | Pad |
| Matrix power (Also works with scalars) | 4 [1_2 3_4] ⊙◌⍥(⊞(/+×),⍉):⊞=.⇡⧻, | Pad |
| Repeat a function and collect intermediate results into an array | [⍥(×2.)] 10 1 | Pad |
| Pad an array with 0s | [1_2_3 4_5_6] ↻¯±⟜⬚0↙+2△. | Pad |
| Complex conjugate | ⍜°ℂ¯ +i1 | Pad |
| Cosine | ∿+η 1 | Pad |
| Tangent | ÷:°∠ 1 | Pad |
| Factorial | /×+1⇡ 5 | Pad |
| Rank of an array | ⧻△ [1_2_3_4 5_6_7_8 9_10_11_12] | Pad |
| Main diagonal of an array | ⊡≡↯:⇡/↧⟜⧻△. [1_2_3_4 5_6_7_8 9_10_11_12] | Pad |
| Convert from base, input in little endian | /+×ⁿ⇡⧻, 3 0_2_1_1 | Pad |
| Corner element of an array | ⊢♭ [1_2_3_4 5_6_7_8 9_10_11_12] | Pad |
| Test if positive integers are prime | =⊢⇌°/×. [2 3 4 5 6 7 8 9 10] | Pad |
| Inverse modulo m, returns m if it does not exist | ⊗1◿:×⇡, 3 7 | Pad |
| Multiplicative order modulo m | ⊡1⊚=1◿:ⁿ⇡, 2 7 | Pad |
| Continued fraction to decimal | /(+÷:1)⇌ 2_1_2_1_1_4_1_1_6 | Pad |
| Complex argument | ∠°ℂ i | Pad |
| Successive differences | ≡/-◫2 2_3_5_9_4 | Pad |
| Binomial coefficient | /×÷¬⟜+¯⇡ 3 5 | Pad |
| Replace all of one element in a list with another | ⍜▽≡⋅∘=, 5 [1 5 8 5 2] 3 | Pad |
| Boxed powerset | ⍚▽⋯⇡ⁿ:2⧻⟜¤ [1 5 8 2] | Pad |
| Irrational number to n terms of continued fraction | ⇌◌⍥(⊙⊂÷:1◿1⟜⌊)⊙⊙[] 10 e | Pad |
| Bitwise XOR | ⍜∩⋯⬚0≠ 42 65 | Pad |
| Boxed chunks of array | ⊕□⌊÷:⇡⧻, 3 1_4_9_16_25_36_49 | Pad |
| LCM (by thomasip) | ÷◌⊃⍢(◿,⊃↥↧)±× | Pad |
| Intersperse an item between the rows of an array | /(⊂⊂) π [1 2 3 4] | Pad |
| Smoothstep function, commonly used in computer graphics | /-×2_3ⁿ3_2⊟.↧1↥0 | Pad |
| Join array of strings with space in between | /◇(⊂⊂:@ ) {"Join" "these" "strings"} | Pad |
| Join array of strings with space in between | /◇(⊂⊂:@\s) {"Join" "these" "strings"} | Pad |
| Num | 123 | Pad |
| Num | 9 | Pad |
| Check if a number is perfect | =/+▽≠0.×≠⟜:▽≠0.×⌊:=,⌊.÷+1⇡... 8128 | Pad |
| divisible by | =0◿ | Pad |
| Better "Check if a number is prime" | =1⧻°/× 367 | Pad |
| Check if a number is prime | =2⧻▽≠0.×⌊:=,⌊.÷+1⇡. 37 | Pad |
| Better prime testing | =₀⧻▽⊸=₀◿▽◡˜<+2⇡-1⌈⊸√ 137 | Pad |
| IsEven | =⊃⌊∘÷2 [0 1 2 3 4 5] | Pad |
| Is number square? | =⊸⁅√ 25 | Pad |
| Format 4byN array as bytes | BYTE ← ( ⤸1 ↯ 8 ) | Pad |
| Encode a string through UTF8 into bits | ENC ← ( utf₈ ⋯ ) | Pad |
| ↘⊙(⇡+₁)°⊟ [5 9] | Get whole numbers between n1 to n2 inclusive | Pad |
| Unencode a string that has been encoded through UTF8 into bits | UNENC ← ( °⋯ °utf₈ ) | Pad |
| return both the min and max of an array | [/↧ ⟜/↥] | Pad |
| Angle between two vectors in degrees | [1 0 1 0 0] [0 1 0 1 0] ÷τ×360°(∿-⊙η)/+×∩(÷√/+×..) | Pad |
| Matrix Dot Multiplication (B∙A; B must have same number of columns as A has rows, only tested for rank 2 and 1 matrices) | [12_34 56_78] [1_0 0_1] # A B ≡⌞(/+×) # B∙A | Pad |
| Split an integer into its digits | [⍥(⊃(⌊÷10)(◿10))⌊ₙ10.] | Pad |
| Replace 0s in an array with first non-0 value to the left | \(⊡≠0⤙⊟) [1 0 0 2 0 3 0 0 4 5 0] | Pad |
| /+⍉∵⌕¤1_2_3_4_5 2_4_6_3_5 | find multiple items inside a list | Pad |
| Array Sum | redadd[1 2 3] | Pad |
| Some value!! | test | Pad |
| Get the first N rows of an array while maintaining the original, great for box arrays | {"UIUA" "Q" "JPL" "J" "BQN"} ⊸↙1 | Pad |
| Char to Integer (also works with Strings) | °(+@\0) "Hello world!" | Pad |
| Prime decomposition of N | °/× 100 | Pad |
| Count occurences of each element in an array | °⊚⊛⟜◴ "hello, world" | Pad |
| Shuffle an array / string | °⍆ "remix" | Pad |
| Shuffle an array | °⍆ ⇡10 | Pad |
| Get weekday from datetime | °□⊡:Days◿7+4⌊÷86400 | Pad |
| Calculate pi | ×4÷⧻⟜/+♭<₁˙⊞(⌵ℂ)-⊸¬÷⟜⇡4000 | Pad |
| Find starts of runs of 1s in a list of 1s and 0s | ׬⊸°↻₁ | Pad |
| Round away from 0 | ×⊃±(⌈⌵) | Pad |
| Round towards 0 | ×⊃±(⌊⌵) | Pad |
| Find start of FIRST run of 1s in a list of 1s and 0s | ×⊸◰ | Pad |
| Combinations (choose operation) | ÷×∩₃(/×+1⇡)⟜⊸- 3 6 #6 choose 3 | Pad |
| Angle between two vectors in degrees | ÷τ×360°(∿-⊙η)/+×∩(÷√/+×..) | Pad |
| Average value of an array | ÷⊃⧻/+ | Pad |
| Normalize vector | ÷⍜°√/+. | Pad |
| Interpolate between two 2d points in an array | ÷⟜(≡/+◫)⟜▽/↥⌵/-. | Pad |
| Average value of an array | ÷⧻:/+. | Pad |
| Half and Half black/white image(INSTANT!) | ˙⊞<∠100⇡100 | Pad |
| Blurry half and half black/white image | ˙⊞◿∠100⇡100 | Pad |
| Combinations (choose operation) | ˜÷÷⊃∩(/× +1⇡)(/× +1⇡-) 3 6 #6 choose 3 | Pad |
| Calculate nPr. F is factorial. | ˜÷⊃(⊙◌f)(f˜-) | Pad |
| Calculate nCr. F is the factorial. | ˜÷⊃(⊙◌f)(×⊃(f◌)(f˜-)) | Pad |
| Split an integer into its digits | ↘2[⍥(⊃(⌊÷10)(◿10))∞] | Pad |
| clamp function(min max value_to_be_clamped) | ⇅ ← ↥⊙↧ | Pad |
| indexes of matrix | ⇡△ | Pad |
| NxM matrix of indexes | ⇡△[N M] | Pad |
√/+ⁿ2 | Pad | |
| Generalizes "Upscale a 2d matrix or colored image" to any rank and shape of array. The first argument describes how each element gets scaled and the second argument contains the array with the arguments | ∧(⍉▽) 2_2 ↯4_4⇡16 | Pad |
| Split an array in half (every other element) | ∩▽ ⊙, ∩(◿2) +1. ⊸(⇡⧻) [1 2 1 2 1] | Pad |
| Given a 1 dimensional array it boxes each element individually | ∵□₁ | Pad |
| Kronecker product of two matrices | ≡/⊂/⊂⊞⊞× [1_2 3_4] [5_6 7_8] | Pad |
| Take rank-4 matrix of windows and snitch them together into a rank-2 matrix (join axes 1 | ≡/⊂⤸1≡/⊂⤸1 | Pad |
| Generate an array of all permutations of rows | ≡°⍉☇¬⧻.⍉/(≡↻⇡⟜↯⧻.⍣⊟⊂) | Pad |
| Split an integer into digits (parse method) | ≡⋕⍉¤°⋕ | Pad |
| Capitalize a string (can also be done with [first]⊢ instead of [pick]⊡ 0, and [un]°[join]⊂ instead of ⌵⊢.) | ⊂:¯⌵↘1:⌵⊡0."HEY there!" | Pad |
| Split an integer into its digits | ⊂⍥(⊙⊂⌊÷10:◿10.)⌊ₙ10.:[] | Pad |
| Generate array with cardinal directions | ⊂⟜¯⋯2_1 | Pad |
| Reverse three elements in the stack | ⊃(⊣)(⊢):°⊂⇌[⊙⊙⊙] | Pad |
| Reverses three items in the stack v2 | ⊃⊣⊢:°⊂⇌[⊙⊙⊙] | Pad |
| Sort an array using F which returns a boolean indicating whether the two arguments are in order | ⊏ ⍏≡/+⊸(⊞F.) | Pad |
| Sort an array using F which returns a boolean indicating whether the two arguments are in order | ⊏ ⍖ /+ ⊸(⊞F.) | Pad |
| Compose two permutations | ⊏: | Pad |
| Use the pride flag builtins to make a pride flag | ⊏⍉⊞+↯×10⊃⋅∘⊙◌0⟜◿⟜(↻¯5⁅×)⟜(÷⟜⇡×10)⊸⧻ Rainbow | Pad |
| Shuffle an array | ⊏⍏⊸[⍥⚂⧻] "shuffle me!" | Pad |
| Shuffle an array | ⊏⍏⊸≡⋅⚂ | Pad |
| Sort table by column index I, ascending. | ⊏⍜⍉(⍏⊡I) | Pad |
| Shuffle an array with a seed | ⊏⤚(⍏gen⧻) "Uiua" 1 | Pad |
| progressive index of | ⊗∩(≡□₂⊸⧆) | Pad |
| Given an adjancy matrix with valid topological sorts, returns a topological sort. If there are any loops, nodes in and downstream of loops will not be included in the output | ⊙◌⍢(⊂⊙⊚⊙(⟜(≡↥¤)¬⟜↧/↥.)|/↥¬/↥◌)[] | Pad |
| Partition a string by a non-scalar delimiter | ⊜∘ ¬⦷" - ". "foo - bar - baz" | Pad |
| Make a diagonal of 2 characters, going from top left to bottom right | ⊞(˜⊡" x"=).⇡10 | Pad |
| Make a diagonal of 1s in a 2d array, going from top left to bottom right | ⊞=.⇡10 | Pad |
| Get a random value from an array | ⊡⌊×⚂:⟜(⧻)[1 2 3 4 5] | Pad |
| Pivot the axes of an array | ⊡⍉⊏⟜⊸(°⍉⇡⊕⊢⊙△) 2_0_1 °△ 5_5_5 | Pad |
| Get all values within a triangle set by two positions | ⊡♭₂+⊡0:⇡+1⤚- [StartX StartY] [EndX EndY] | Pad |
| Find the middle element of an array | ⊣⊢⬚0↯2_∞ | Pad |
| Reverse integer digits | ⋕∵⇌°⋕[100 101 102] | Pad |
| Split an integer into digits | ⌊[⍢⊃÷₁₀◿₁₀>₉] | Pad |
| Cotangent | ⌝∠1 0.3 | Pad |
| Get the hexadecimal value of a number | ⌵⊏⊙HexDigits⇌base₁₆ | Pad |
| Sort an array | ⍆ [1 5 4 3] | Pad |
| Inititalize a random NxM weight matrix in the range [-1, 1] | ⍉≡°⍆⍉⍜⊏≡°⍆°⊏⍜⊏≡(ׯ1)⊚◿(+1⌊×(⧻)⚂)⊸°⍆°⊏ | Pad |
| Inititalize a random NxM weight matrix in the range [-1, 1] | ⍉≡°⍆⍉⍜⊏≡°⍆°⊏⍜⊏≡(ׯ1)⊚◿(+1⌊×(⧻)⚂)⊸°⍆°⊏gen [N M] Seed | Pad |
| Matrix multiplication | ⍉≡≡(/+/×)⊞⊟⍉ | Pad |
| Generate a random permutation of 0-n | ⍏[⍥⚂9] | Pad |
| Get first letters of a string | ⍚⊢⊜□⊸≠@\s "chess battle advanced" | Pad |
| Delete index of letter in string | ⍜(↻|↘1) 1 "cats" | Pad |
| Find inverse of a permutation | ⍜⊏(⇡⧻):⇡⧻. | Pad |
| Fully reverse array | ⍜♭⇌ [69_420 67_21] | Pad |
| Get first digits of Fibonacci | ⍥◡+10 1 1 | Pad |
| Remove rows of an array | ▽¬ ⊙◌ ⍜⬚0⊟∘ ⊙°⊏ °⊚ 1_3 "cobra" | Pad |
| Remove the nth element from an array | ▽¬°⊚4 [1 4 2 0 5 4 3] | Pad |
| Factor of n | ▽≠0.×⌊:=,⌊.÷+1⇡. 100 | Pad |
| Remove first instance of an element from an array | ▽≠1⊸⦷ 4 [1 4 2 0 5 4 3] | Pad |
| Factors of number | ▽⊸=⊸⁅÷+1⊸⇡ 36 | Pad |
| Create a checkerboard of size N | ◿2⊞+.⇡ 8 | Pad |
| Power Set Idiom | ⬚{▽0}/(⊂⟜⍚⌟⊂). | Pad |
| Generate an array of all permutations of rows | ⮌+1°⊏⬚(▽0)/(≡↻⇡⟜↯⧻.⊂). | Pad |
| Pad | ||
| Join array of strings with spaces between (without flip) | /◇(⊂˜⊂@ ) {"Hello" "World" "Again!"} | Pad |
| Shuffle an array | un sort | Pad |
| Separate out signs and abs values of numbers | °× [2 ¯3] | Pad |
| Parse a hex color code string "#FF9933" | ÷255⇌⬚0↙3⊥₂₅₆⋕₁₆↘1 | Pad |
| Median (Uiua 0.19.0-dev.4) | ÷₂/+⊏⊟⊃⌊⌈÷₂-₁⧻⟜⍆ [85 105 117 97] | Pad |
| Make a diagonal of 1s in a 2d array, going from top left to bottom right, with ˙ (self) instead of . (duplicate, deprecated) | ˙⊞=⇡10 | Pad |
| Create an identity matrix | ˙⊞=⇡5 | Pad |
| swap stack top | ˜∩∘ | Pad |
| Get proper divisors of N (does not include N itself) | ↘¯1▽=0⤚◿⊸⇡₁ | Pad |
| Exclusive range from a to b | ↘±-◠⍜-⇡ | Pad |
| Split an integer into its digits | ↘₁⇌⍥(⌊÷10⤙◿10) ∞ | Pad |
| Generate a list of points within a particular range. For example, (F [1 1] [2 2]) returns [2_2 2_1 1_2 1_1]. | ↯⍜(↘¯1|/×)△.˜(+⟜(⇡-)+1) | Pad |
| Zip (or zipWith) two arrays with a binary operation (here the op is $"_ _"); the pattern is ≡(°⊟)⍉⊟; ≡ may need to be replaced with ⍚ | ≡($"_ _" °⊟)⍉⊟ ⇡5 ⇌⇡5 | Pad |
| Get neighbours in 2D array | ≡₁(□▽⊸≠∞)⍉⊸⬚∞↻A₂ °△[3 5] | Pad |
| Split number and trailing text into two variables | ⊃(⋅⊙◌|↘⊙⋅∘)⧻⊸⊥₁₀⊢⊸⊜⋕⊸(∊"0123456789")"123abc" | Pad |
| every other value of array | ⊃(▽⋅⊙|▽⊙⋅) ⟜¬ ◿₂ ⊸(⇡⧻) [1 2 1 2 1] ### [1 1 1] [2 2] | Pad |
| Find the first non-blank word | ⊏+⊃⊢(⇡/-)↙2⊚≠⊸⬚0↻¯1⊸≠@ " this is a test" | Pad |
| Set values at indices within a target matrix. It takes three arguments: 1) an array of points for the indices to replace; 2) the original matrix; 3) the value to set the given indices to. | ⊙◌∧(⊸⍜⊡◌⊙°□)⊙□ | Pad |
| Set a submatrix within a target matrix to a paticular value. For example, if (F [1_1 2_2] °△[4 4] 1000) returns [0_1_2_3 4_1000_1000_7 8_1000_1000_11 12_13_14_15]. | ⊙◌∧(⊸⍜⊡◌⊙°□)⊙□↯⍜(↘¯ 1|/×)△.˜(+⟜(⇡-)+1)⊃⊢(⊏1) | Pad |
| readlines standard input into an array of boxes | ⊙◌⍢(□|⊸(¬≍0) | Pad |
| Get proper divisors of N (does not include N itself) | ⊚=0◿⊸⇡ | Pad |
| Biggest Prime factor of N | ⊣°/× | Pad |
| Bitwise AND | ⍜∩⋯⬚0× | Pad |
| Bitwise OR | ⍜∩⋯⬚0↥ | Pad |
| Bitwise AND | ⍜∩⋯⬚0↧ | Pad |
| Replace the first element of an array | ⍜⊢◌[1 2 3] 5 | Pad |
| Interleave two arrays of different sizes | ▽¬⊸⌕NaN♭⍉⬚NaN ⊟ ⇡₁3 ⇡₄7 | Pad |
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