Description

 

Text reflow means to break up lines of text so that they fit within a certain width. It is useful in e.g. mobile browsers. When you zoom in on a web page the lines will become too long to fit the width of the screen, unless the text is broken up into shorter lines.

*: Podem fazer em qualquer linguagem

 

Input

You will be given a text with a maximum line width of 80 characters.

 

Output

Produce the same text with a maximum line width of 40 characters

 

Challenge Input

  Quote

 

    In the beginning God created the heavens and the earth. Now the earth was
    formless and empty, darkness was over the surface of the deep, and the Spirit of
    God was hovering over the waters.

    And God said, "Let there be light," and there was light. God saw that the light
    was good, and he separated the light from the darkness. God called the light
    "day," and the darkness he called "night." And there was evening, and there was
    morning - the first day.

 

 

Challenge Output

 

  Quote

 

    In the beginning God created the heavens
    and the earth. Now the earth was
    formless and empty, darkness was over
    the surface of the deep, and the Spirit
    of God was hovering over the waters.

    And God said, "Let there be light," and
    there was light. God saw that the light
    was good, and he separated the light
    from the darkness. God called the light
    "day," and the darkness he called
    "night." And there was evening, and
    there was morning - the first day.

 

    
 

Bonus

Let's get rid of the jagged right margin of the text and make the output prettier. Output the text with full justification; Adjusting the word spacing so that the text is flush against both the left and the right margin.

Bonus Output

  Quote

 

    In the beginning God created the heavens
    and   the  earth.   Now  the  earth  was
    formless  and empty,  darkness was  over
    the  surface of the deep, and the Spirit
    of  God was  hovering over  the  waters.

    And  God said, "Let there be light," and
    there  was light. God saw that the light
    was  good, and  he separated  the  light
    from  the darkness. God called the light
    "day,"   and  the   darkness  he  called
    "night."  And  there  was  evening,  and
    there  was  morning  -  the  first  day.

 

 

Finally

This challenge is posted by /u/slampropp

Also have a good challenge idea?

Consider submitting it to /r/dailyprogrammer_ideas

Link do topico original

Belo desafio para a galera!

Fiz em JavaScript, usei JQUERY só para usar a função .text(), a lógica mesmo é em Javascript Puro...

Fiquei com preguiça no final de reanalizar as linhas e adcionar mais espaços... hehehehe

$(function(){
  
  var texto = $('#input').text();
  var limite = 40;
  var out = '';
  
  var paragrafos =[''];
  var indice=0;
  
  texto.split("\n").forEach(function(elm,ind, arr){
    paragrafos[indice] += elm;
    if(elm.lastIndexOf('.') == elm.length -1){ 
      indice++;
      paragrafos[indice]='';
    }
  });
  
  paragrafos.forEach(function(elm,ind, arr){
    out += limitaTXT(elm, limite);
  });

  
  function limitaTXT(entrada, limite){
    var out='';
    
    while(entrada.length > limite){
      var entrada_1 = entrada.substr(0, limite);
      var fim = entrada_1.lastIndexOf(' ');
      if(fim === -1){ fim = limite;} // não encontrou espaço, logo será enviado os 40 primeiros characteres
      
      out += entrada_1.substr(0,fim+1)+'\n';
      entrada = entrada.substr(fim+1);
    }
    
    if(entrada.length > 0){ out += entrada+'\n'; }
    
    return out;
  }
  
  $('#output').text(out);
});

Aqui está o código funcionando para quem quiser continuar o desafio e colocar os espaços...

https://jsbin.com/sijajesezu/edit?html,js,output

Python é tão gostosinho

 

*com justificação*

def reflow(text, width):
    line, *words = text.split()
    for word in words:
        if len(line) + len(word) >= width:
            while len(line) < width:
                line = line.replace(' ', '  ', width - len(line))
            print(line)
            line = word
        else:
            line = ' '.join([line, word])
    print(line)


if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('-w', '--width', default=80, type=int)
    args = parser.parse_args()

    import sys
    reflow(' '.join(sys.stdin.readlines()), args.width)

 

Editado Dezembro 30, 2016 8 anos por Lordfire (veja o histórico de edições)