Divide the string into two equal sections with nearly identical lengths

Question

Divide the string into two equal sections with nearly identical lengths

Given a string: "This is a sample string", the task at hand is to split it into 2 strings without breaking any words. The goal is to create two strings with the closest length possible, resulting in:

["This is a", "sample string"].

For example:

"Gorge is nice" => ["Gorge", "is nice"]

It would also be helpful if the function could accept the number of elements as a parameter and provide the desired result accordingly.

Appreciate any assistance provided!

javascript string split string-length

Answer 1

Answer №1

To locate the next occurrence of a particular string within a given text, you can utilize the indexOf function with the optional second parameter set to half the length of the string. This way, indexOf will start searching for the matching string from the index after the provided one.

Check out the live demonstration here.

var str = "Thisasdfasdfasdfasdfasdf is a sample string",
  len = str.length;

var ind = str.indexOf(' ', Math.floor(str.length / 2) - 1);
ind = ind > 0 ? ind : str.lastIndexOf(' ');

var str1 = str.substr(0, ind),
  str2 = str.substr(ind);

document.write(str1 + ' <br /> ' + str2);

LATEST UPDATE

If the necessity arises to divide the text into 3, 4, or any other number of elements, what would be the approach?

function split(str, noOfWords) {
  // Defaulting to splitting into 2 words if no specific number is provided
  noOfWords = noOfWords || 2;

  var len = str.length; // Length of the input string
  wordLen = Math.floor(len / noOfWords); // Approximate length of each word

  var words = [],
    temp = '',
    counter = 0;

  // Split the string by spaces and iterate over it
  str.split(' ').forEach(function(v) {
    // Recalculate the new word length
    wordLen = Math.floor((len - words.join(' ').length) / (noOfWords - counter));

    // Check if the current word length exceeds the limit
    if ((temp + v).length < wordLen) {
      temp += ' ' + v;
    } else {
      // Add the formed word to the array
      words.push(temp.trim());

      // Increment counter for word length calculation
      counter++;
      temp = v;
    }
  });

  // Handle the last element
  temp.trim() && words.push(temp.trim());
  return words;
}

var str = "This is a sample string. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eos quae error ab praesentium, fugit expedita neque ex odio veritatis excepturi, iusto, cupiditate recusandae harum dicta dolore deleniti provident corporis adipisci.";

var words = split(str, 10);

console.log(words);
document.write('<pre>' + JSON.stringify(words, 0, 2) + '</pre>');

Answer 2

To locate the next occurrence of a particular string within a given text, you can utilize the indexOf function with the optional second parameter set to half the length of the string. This way, indexOf will start searching for the matching string from the index after the provided one.

Check out the live demonstration here.

var str = "Thisasdfasdfasdfasdfasdf is a sample string",
  len = str.length;

var ind = str.indexOf(' ', Math.floor(str.length / 2) - 1);
ind = ind > 0 ? ind : str.lastIndexOf(' ');

var str1 = str.substr(0, ind),
  str2 = str.substr(ind);

document.write(str1 + ' <br /> ' + str2);

LATEST UPDATE

If the necessity arises to divide the text into 3, 4, or any other number of elements, what would be the approach?

function split(str, noOfWords) {
  // Defaulting to splitting into 2 words if no specific number is provided
  noOfWords = noOfWords || 2;

  var len = str.length; // Length of the input string
  wordLen = Math.floor(len / noOfWords); // Approximate length of each word

  var words = [],
    temp = '',
    counter = 0;

  // Split the string by spaces and iterate over it
  str.split(' ').forEach(function(v) {
    // Recalculate the new word length
    wordLen = Math.floor((len - words.join(' ').length) / (noOfWords - counter));

    // Check if the current word length exceeds the limit
    if ((temp + v).length < wordLen) {
      temp += ' ' + v;
    } else {
      // Add the formed word to the array
      words.push(temp.trim());

      // Increment counter for word length calculation
      counter++;
      temp = v;
    }
  });

  // Handle the last element
  temp.trim() && words.push(temp.trim());
  return words;
}

var str = "This is a sample string. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eos quae error ab praesentium, fugit expedita neque ex odio veritatis excepturi, iusto, cupiditate recusandae harum dicta dolore deleniti provident corporis adipisci.";

var words = split(str, 10);

console.log(words);
document.write('<pre>' + JSON.stringify(words, 0, 2) + '</pre>');

Answer 3

Answer №2

One option is to use a splitter function like the one demonstrated below:

function splitString(str) {
  var length = str.length,
    midpoint = Math.floor(length / 2);

  var leftIndex = midpoint - str.substring(0, midpoint).lastIndexOf(' '),
    rightIndex = str.indexOf(' ', midpoint) - midpoint;

  var index = midpoint + (leftIndex < rightIndex ? -leftIndex : rightIndex);

  return [str.substr(0, index),
    str2 = str.substr(index)
  ];
}

var segments = splitString("123-456 3-5-asldfkjas kdfasdfasd fjas");
snippet.log(segments[0]);
snippet.log(segments[1]);

<!-- Provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

Answer 4

One option is to use a splitter function like the one demonstrated below:

function splitString(str) {
  var length = str.length,
    midpoint = Math.floor(length / 2);

  var leftIndex = midpoint - str.substring(0, midpoint).lastIndexOf(' '),
    rightIndex = str.indexOf(' ', midpoint) - midpoint;

  var index = midpoint + (leftIndex < rightIndex ? -leftIndex : rightIndex);

  return [str.substr(0, index),
    str2 = str.substr(index)
  ];
}

var segments = splitString("123-456 3-5-asldfkjas kdfasdfasd fjas");
snippet.log(segments[0]);
snippet.log(segments[1]);

<!-- Provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 -->
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

Answer 5

Answer №3

Splitting words by space is a useful technique.

For example:

var words = 'George is nice'
words = words.split(' ')

You can then iterate through the array and compare string lengths. For instance:

var concat = ''
for (var word in words)
{
    word = words[word]
    if (word.length < words[word - 1] )
    {
        concat += word
    }
}

Why must it be just two elements, rather than the total number of words? Is there a specific algorithm you are aiming for? Or do you simply want to combine the shortest amount of text possible?

Understanding the purpose behind this requirement would be helpful.

Answer 6

Splitting words by space is a useful technique.

For example:

var words = 'George is nice'
words = words.split(' ')

You can then iterate through the array and compare string lengths. For instance:

var concat = ''
for (var word in words)
{
    word = words[word]
    if (word.length < words[word - 1] )
    {
        concat += word
    }
}

Why must it be just two elements, rather than the total number of words? Is there a specific algorithm you are aiming for? Or do you simply want to combine the shortest amount of text possible?

Understanding the purpose behind this requirement would be helpful.

Divide the string into two equal sections with nearly identical lengths

Answer №1

Answer №2

Answer №3

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