Daily Challenge #38 - Middle Name

Your challenge today is to initialize an individual's middle name (if there is any).

Example:
'Jack Ryan' => 'Jack Ryan'
'Lois Mary Lane' => 'Lois M. Lane'
'Dimitri' => 'Dimitri'
'Alice Betty Catherine Davis' => 'Alice B. C. Davis'

Good luck!

---

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Comments

[Alvaro Montoro]

CSS

/* the first letter of each word will have a regular size */
.mn span::first-letter {
  font-size: 1rem;
} 

/* the words in the middle (not first or last) will have a font-size of 0 */
.mn span:not(:first-child):not(:last-child) {
  font-size: 0;
  display: inline-block;
}

/* add a . at the end of each shortened word */
.mn span:not(:first-child):not(:last-child)::after {
  content: ".";
  font-size: 1rem;
}

Wrap each word in a span, and add the class "mn" to the container.
Live demo on CodePen.

[Alvaro Montoro]

I also did a JavaScript version on that same demo:

const middleName = name => name.split(' ')
                               .map((val, idx, arr) => idx == 0 || idx == arr.length - 1 
                                                        ? val 
                                                        : val[0] + ".")
                               .join(' ');

[Alvaro Montoro]

If you select-and-copy the names, the full name is copied instead of the shortened one.

[Joe Beretta]

Not the best solution: ))

function findMiddleName(str) {
    const words = str.split(' ');
  let result = '';
  if(words.length <= 2)
    return result = str
   else{
   let middleNames = ''
   for(let i = 1; i < (words.length - 1); i++)
    middleNames += (words[i].slice(0,1) + '. ') 
    return result = `${str.split(' ')[0]} ${middleNames}${str.split(' ')[words.length - 1]}`
   }
}

console.log(findMiddleName('Jack Ryan'));
console.log(findMiddleName('Lois Mary Lane'));
console.log(findMiddleName('Dimitri'));
console.log(findMiddleName('Alice Betty Catherine Davis'));

[Tanguy Andreani]

Ruby solution

I just changed a few things in a similar function from singl.page. Doesn’t use join(). Works when only a single name is provided.

def middle_names(fullname)
  String.new.tap { |result|
    fullname.split(' ').then { |words|
      words.map.with_index { |word, i|
        case i
        when 0
          result << word.capitalize
        when words.length - 1
          result << ' '
          result << word.capitalize
        else # middlename
          result << " #{word[0].upcase}."
        end
      }
    }
  }
end

[Miguel Ángel Sánchez Chordi]

PHP Solution

<?php

 $fullName = $argv[1];
 $components = explode(' ', $fullName);
 for ($i=1; $i<= count($components) - 2; $i++) {
     $components[$i] = strtoupper($components[$i][0]) . '.';
 }

 echo implode (' ', $components);

[ShiroiHana013]

def initializeName(name: str):
    name = name.split(" ")
    if (len(name) >= 3):
        #loop from first name to last name.
        for i in range(1, len(name)-1):
            name[i] = name[i][0] + "."
    name = ' '.join(name)
    return name

[Dane Hillard]

def initialize(full_name):
    names = full_name.split()
    return ' '.join(
        f'{name[0]}.' if index > 0 and index < len(names) - 1 else name
        for index, name in enumerate(names)
    )

[Joseph Thomas]

Here's mine, with a more functional approach - also takes into account name strings that have erroneous spaces

jsbin.com/gedejih/edit?js,console

function formatName(name) {
    /* Trim out any spaces at the beginning or end,
     * split the name into segments,
     * and filter out empty strings. */
  const splitName = name
    .trim()
    .split(' ')
    .filter(n => n.length > 0)

  return splitName.map((namePart, index) => {
    /* Return the first and last names as they are */
    if (index === 0 || index === splitName.length - 1) return namePart

    /* Otherwise, get the first character,
     * make sure it is capitalized,
     * and return it with a `.` */
    return `${namePart[0].toUpperCase()}.`

  }).join(' ')
}


const formattedNames = names.map(formatName) 

[Andy Mardell]

Javascript

This was fun :)

const initialiseMiddleNames = (fullName) => {
  const names = fullName.split(' ')
  if (names.length <= 2) return fullName

  const firstName = names.shift()
  const lastName = names.pop()
  const initials = names.map(name => name.charAt(0))

  return `${firstName} ${initials.join('. ')}. ${lastName}`
}

initialiseMiddleNames('Jack Ryan') // Jack Ryan
initialiseMiddleNames('Lois Mary Lane') // Lois M. Lane
initialiseMiddleNames('Dimitri') // Dimitri
initialiseMiddleNames('Alice Betty Catherine Davis') // Alice B. C. Davis

[Mat-R-Such]

Python

def initialize_names(name):
    name= name.split(' ')
    if len(name) <=2:   return ' '.join(name)
    new_name=[]
    for i in range(len(name)):
        if i != 0 and i != (len(name)-1):    new_name.append(name[i][0]+'.')
        else:   new_name.append(name[i])
    return ' '.join(new_name)

[official_dulin]

JavaScript:

function initializeNames(name){
  const names = name.split(' ');
  if (names.length > 2) {
    return names.map((v, i) => {
      if (i === 0 || i === names.length-1) {
        return v;
      }
      return v[0].toUpperCase() + '.';
    }).join(' ');
  }
  return name;
}