Vowels up, consonants down

Question

Challenge

You will be given a string that can contain lowercase letters, uppercase letters, or spaces. You have to turn the vowels (a, e, i, o, u) in the string to upper case and consonants to lower case. This applies whether or not the letter was originally upper case or lower case. Spaces remain as is. Note that "y" is a consonant.

Examples

Hello World -> hEllO wOrld
abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVXWYZ -> AbcdEfghIjklmnOpqrstUvwxyz AbcdEfghIjklmnOpqrstUvxwyz

Info

• The input string can contain letters A to Z, lowercase or uppercase, and spaces.

Input

The string

Output

The formatted string (Vowels uppercase and consonants lowercase).

Answer 1

Python 3, 68 bytes

lambda s:''.join([p.upper()if p in'aeiou'else p for p in s.lower()])

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Answer 2

Zsh --extendedglob, 39

<<<${${(L)@}//(#m)[aeiou]/${(U)MATCH/}}

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Code borrowed from the Zsh Manual, Globbing Flags

Answer 3

Charcoal, 14 bytes

⭆↧Ｓ⎇№aeiouι↥ιι

Try it online! Link is to verbose version of code. Explanation:

  Ｓ             Input string
 ↧              Lowercased
⭆               Map over characters and join
     aeiou      Literal string `aeiou`
    №           Count occurrences of
          ι     Current character
   ⎇            If non-zero
            ι   Current character
           ↥    Uppercased
             ι  Else current character
                Implicitly print

Answer 4

W d, 9 bytes

→d╧o╧╪0╨←

Uncompressed:

("aeiou":)Z

Explanation

(           % Convert to lowercase
 "aeiou"    % All vowel strings
        :   % Duplicate
         )  % Convert to uppercase
          Z % Transliterate

Answer 5

Batch, 118 115 Bytes

3 bytes saved thanks to Neil

@Set o=%*
@For %%A in (A E I O U b c d f g h j k l m n p q r s t v w x y z)do @Call Set o=%%o:%%A=%%A%%
@ECHO(%O%

Explanation:

Uses Call Set to update variable during operation of For Loop in conjunction with Substring Modification: VarName=%VarName:ToSub=SubValue%.

Substring modification is not case-sensitive - case is determined using the defined For loop set %%A in (set)

Answer 6

05AB1E, 8 7 6 bytes

-1 byte thanks to Kevin Cruijssen

lžODu‡

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Answer 7

Python 3, 85 84 bytes

x=''
for i in input():
 if i in'aAeEiIoOuU':x+=i.upper()
 else:x+=i.lower()
print(x)

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Pretty new to codegolf, so probably not the shortest solution

edit 1: one byte saved because of a space

Answer 8

Python 3, 70 bytes

lambda s:''.join(l.upper()if l in'aeiouAEIOU'else l.lower()for l in s)

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Answer 9

SML 65 bytes

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map(fn c=>if contains"AEIOUaeiou"c then toUpper c else toLower c)

This requires open String and open Char. If those are not allowed, then it would be 87 bytes (String.map Char.contains Char.toUpper Char.toLower).

Answer 10

Funky2, 57 bytes

s=>s:gsub("."c=>ifc:match"[aeiou]"c:upper()elsec:lower())

Relatively simple solution, benefits from Funky2's relatively concise language.

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Answer 11

Vim, 19 bytes

Vu:s/[aeiou]/\U&/g

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Explanation

Vu

Select the current line and lowercase it.

:s/

In the current line, replace...

[aeiou]/

a vowel character with...

\U&/

the uppercase version of itself...

g<nl>

for every match on the line.

Answer 12

Brachylog, 10 9 bytes

ḷ{∈Ṿ&ụ|}ᵐ

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-1 byte thanks to @DLosc.

Explanation

ḷ             Lowercase the whole input
 {      }ᵐ    Map on each char of the input:
  ∈Ṿ             The char lowercased is in "aeiou"
     &ụ          Output the char uppercased
       |         Or do nothing

Answer 13

Excel VBA, 78 75 bytes

^{Saved 3 bytes thanks to Taylor Raine because of course}

t=LCase([A1]):For Each c in Split("A E I O U"):t=Replace(t,c,c,,,1):Next:?t

Code is run in the immediate window and uses the cell A1 from the active sheet as it's input. The method is simple:

• Save the lowercase version of the input as t
• Save the vowels as s
• For each vowel, replace the lowercase version with the uppercase version
• Print the result

Answer 14

Vyxal, 7 bytes

ɽƛAß⇧;ṅ

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ɽƛAß⇧;ṅ # Takes the string as input
ɽ       # Lowercase the string
 ƛ   ;  # Map the characters in the string to...
  A     # Is character a vowel?
   ß⇧   # If truthy, uppercase the letter
      ṅ # Join by nothing

Answer 15

Arturo, 43 bytes

$=>[replace lower&split"aeiou"split"AEIOU"]

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Answer 16

Thunno 2 J, 8 bytes

ıDṃh?R:L

Explanation

ıDṃh?R:L  # Implicit input
ı         # Map over each character
 D        # Duplicate the current character
  ṃh?     # If it's a vowel:
     R    #  Uppercase it
      :   # Otherwise:
       L  #  Lowercase it
          # Implicit output, joined into a string

Answer 17

APL (Dyalog Unicode), 17 bytes ^SBCS

1⎕C@(∊∘'aeiou')⎕C

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A tacit function that ports @Adam's Dyalog Extended solution into vanilla Dyalog APL. Makes use of the system function ⎕C introduced in Dyalog 18.0 (hence, won't work in TIO).

1⎕C@(∊∘'aeiou')⎕C    ⍝ Tacit function.
               ⎕C    ⍝ Convert to lowercase. Then:
1⎕C                  ⍝ Convert to uppercase
   @                 ⍝ at the positions
    (∊∘'aeiou')      ⍝ that are part of the vowels.

Answer 18

Lexurgy, 111 bytes

Simple replacement

a:
{a,e,i,o,u,B,C,D,F,G,H,J,K,L,M,N,P,Q,R,S,T,V,W,X,Y,Z}=>{A,E,I,O,U,b,c,d,f,g,h,j,k,l,m,n,p,q,r,s,t,v,w,x,y,z}

Answer 19

Vyxal s, 41 bits¹, 5.125 bytes

ƛA[⇧|⇩

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Posted as a separate answer because a) vyncode isn't a golfing suggestion and b) it's different enough to be its own answer - it's not a byte shave from the other answer.

Explained

ƛA[⇧|⇩
ƛ       # To each character:
 A[     #   if it is a vowel:
   ⇧    #     uppercase
    |   #   else:
     ⇩  #     lowercase

Answer 20

Lua, 64 bytes

print(((...):lower():gsub('[aeiou]',load'return(...):upper()')))

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Answer 21

Python 3, 82 bytes

f=lambda c:c.upper()if c in 'aeiou'else c.lower();lambda s:''.join(map(f,list(s)))