How to get all the possible K length Substrings in a String in JavaScript - Step by Step Examples

How to get all the possible K length Substrings in a String in JavaScript ?

Answer

To get all possible K length substrings of a string in JavaScript, you can use nested loops to iterate through each possible substring.

✐ Examples

1 All Substrings of Length 3 in 'Hello World'

In this example,

We create a variable str with a value of 'Hello World'.
We initialize an empty array substrings to store all substrings of length 3.
We use nested loops to iterate through each possible start and end index for the substring.
Within the loops, we extract the substring using the substring method and push it to the substrings array.
Finally, we log the substrings array to the console.

JavaScript Program

let str = 'Hello World';
let k = 3;
let substrings = [];
for (let i = 0; i <= str.length - k; i++) {
    for (let j = i; j < i + k; j++) {
        substrings.push(str.substring(i, j + 1));
    }
}
console.log(`All substrings of length ${k}:`, substrings);

Output

All substrings of length 3: [
  'H',   'He',  'Hel', 'e',   'el',
  'ell', 'l',   'll',  'llo', 'l',
  'lo',  'lo ', 'o',   'o ',  'o W',
  ' ',   ' W',  ' Wo', 'W',   'Wo',
  'Wor', 'o',   'or',  'orl', 'r',
  'rl',  'rld'
]

Summary

In this tutorial, we learned How to get all the possible K length Substrings in a String in JavaScript language with well detailed examples.

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