Split a Sentence into Fixed-Length Blocks without Breaking Words in JavaScript

Given a sentence, our task is to split it into blocks of a fixed length without breaking words using JavaScript.

Example:

Input:
Sentence= "This is a sample sentence to demonstrate splitting into blocks 
without breaking words.", blocksize = 15
Output:
Blocks: [ 'This is a', 'sample sentence ', 'to demonstrate', 'splitting into', 'blocks without', 'breaking words.' ]

Below are the approaches to splitting sentences into blocks of a fixed length without breaking words in JavaScript:

Using reduce

In this approach, we use reduce to iterate through the words of the sentence, accumulating them into blocks of the specified length.

Example: The below code example uses reduce to split it into blocks of a fixed length without breaking words.

Blocks: [
 'This is a',
 'sample sentence',
 'to demonstrate',
 'splitting into',
 'blocks without',
 'breaking words.'
]

Time complexity: O(n)

Auxiliary Space: O(n)

Using split and forEach

In this approach we first split the sentence into words, then use forEach to accumulate words into blocks

Example: The below code example is a practical implementation to split it into blocks of a fixed length without breaking words using split and forEach.

Blocks: [
 'This is another',
 'example sentence to',
 'show how to split it',
 'into blocks of fixed',
 'length.'
]

Time Complexity: O(n)

Auxiliary Space: O(n)

Using while loop

In this approach, we use a while loop to iterate through the words of the sentence, accumulating them into blocks of the specified length.

Example: The below code example uses a while loop to split the sentence into blocks of a fixed length without breaking words.

Blocks: [
 'This approach uses a',
 'while loop to split the',
 'sentence into blocks',
 'without breaking words.'
]

Time Complexity: O(n)

Auxiliary Space: O(n)