Daily Challenge #47 - Alphabets

"use strict";

function lettersOnly(letterOrElse) {
  return letterOrElse.toUpperCase() !== letterOrElse.toLowerCase();
}

function toAlphabetPosition(letter) {
  return letter.toLowerCase().charCodeAt(0) - 'a'.charCodeAt(0) + 1;
}

function alphabet_position(input) {
  return Array
    .from(input)
    .filter(lettersOnly)
    .map(toAlphabetPosition)
    .join(" ");
}

const result = alphabet_position("The sunset sets at twelve o' clock.");
const expectations = "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11";

assert(result === expectations); // undefined (meaning OK)

const alphaPosition = str => [...str]
  .filter(letter => letter.toLowerCase().charCodeAt(0) - 96 > 0)
  .map(letter => letter.toLowerCase().charCodeAt(0) - 96)
  .reduce((s, pos) => s += `${pos} `, '')
  .trim();

    .global alphabetic_position

    .text
alphabetic_position:
    #using these registers to avoid sprintf breaking them
    push %rbx
    push %rbp

    mov %rdi, %rbx
    mov %rdi, %r12
    mov %rsi, %rbp

    xor %eax, %eax
    xor %edx, %edx
loop:
    mov (%rbp), %dl

    cmp $65, %dl # 'A'
    jl skip

    cmp $91, %dl # 'Z' + 1
    jl print

    cmp $97, %dl # 'a'
    jl skip

    cmp $123, %dl # 'z' + 1
    ja skip

printl:
    sub $32, %dl # 'a' -> 'A'
print:
    sub $64, %dl # 'A' -> 1

    push %rdx

    mov %rbx, %rdi
    mov $format, %rsi
    call sprintf

    add %rax, %rbx

    pop %rdx
skip:
    inc %rbp
    cmp $0, %dl
    jne loop

    mov %r12, %rax

    pop %rbp
    pop %rbx
    ret


    .section .rodata
format:
    .asciz "%d "

char *alphabetic_position(char *dst, const char *src);

#include <string>
#include <iostream>

void alphabet_position(std::string s) {
    for (int i = 0; i < s.size(); i++)
    {
        int pos = (int)((char)s[i] - 'a');
        pos = pos < 0 ? pos + ('a' - 'A') : pos;
        if (pos >= 0 && pos <= 'z' - 'a') {
            std::cout << pos+1 << " ";
        }
    }
}

int main (int argc, char *argv[])
{
    alphabet_position("<The quick brown fox jumps over the lazy dog!>");
    //print 20 8 5 17 21 9 3 11 2 18 15 23 14 6 15 24 10 21 13 16 19 15 22 5 18 20 8 5 12 1 26 25 4 15 7
    return 0;
}

pub fn alphabet_position(text: &str) -> String {
    text.to_lowercase()
        .chars()
        .filter(|c| c.is_alphabetic())
        .map(|char| (char as usize - 96).to_string())
        .collect::<Vec<String>>()
        .join(" ")
}

#[test]                                                                                        
fn test_alphabet_position() {                                                                  
    assert_eq!(                                                                                
        alphabet_position("The sunset sets at twelve o' clock."),                              
        String::from("20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11")
    );                                                                                         
}                                                                                              

const code = s => [...s].reduce((a, v) => v.match(/[a-z]{1}/i) 
                                          ? a+(v.toLowerCase().charCodeAt(0)-96)+' ' 
                                          : a
                        , '')
                        .trim();

const decode = s => String.fromCharCode(...s.split(' ').map(val=>parseInt(val) + 96));

import Data.Maybe (catMaybes)
import Data.List (find)
import Data.Functor (fmap)
import Data.Char (toLower) 

alpha = ['a'..'z']

isAlpha :: Char -> Bool
isAlpha = (`elem` alpha)

(>.<) :: (a -> b -> d) -> (c -> b) -> (a -> c -> d)
a >.< b = flip $ flip a . b

toNumber :: Char -> Maybe Int
toNumber = fmap snd . (flip find) alphaNum . ((==) >.< fst)
  where alphaNum = zip alpha [1..]

encodeMsg :: String -> String
encodeMsg = unwords . map show . catMaybes . map toNumber . filter isAlpha . map toLower

import string
def alphabet_position(text):
    text = [i for i in text.replace(' ','').lower() if i.isalpha() ]
    position = [str(string.ascii_lowercase.find(i)+1) for i in text ]
    return ' '.join(position)

function alphabet_position(string $s): string {
    $s = strtoupper($s);
    $alphabetNums = range(65, 90);
    $alphabets = [];

    foreach ($alphabetNums as $chr) {
        $aphabets[] = chr($chr);
    }

    $result = "";

    $index = 0;
    for (; $index < strlen($s); $index++) {
        if (in_array($s[$index], $aphabets) === false) {
            continue;
        }

        $result .= (string)(ord($s[$index]) - 64) . " ";
    }

    return substr($result, 0, -1);
}