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

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

Answer

To get all the possible K length substrings in Go, you can iterate through the string and extract substrings of length K.


✐ Examples

1 Get All K Length Substrings in String for K=3

In this example,

  1. We define a function named getKLengthSubstrings that takes a string str and an integer k as parameters.
  2. We initialize an empty slice of strings named substrings to store the K length substrings.
  3. We use a loop to iterate through the string, extracting substrings of length k using slicing.
  4. Inside the loop, we append each extracted substring to the substrings slice.
  5. The loop continues until the end of the string is reached.
  6. We return the substrings slice.
  7. In the main function, we define a string str and an integer k with specific values.
  8. We call the getKLengthSubstrings function with str and k and store the result in the variable substrings.
  9. Finally, we print the substrings to standard output.

Go Program

package main

import "fmt"

func getKLengthSubstrings(str string, k int) []string {
    var substrings []string
    for i := 0; i <= len(str)-k; i++ {
        substrings = append(substrings, str[i:i+k])
    }
    return substrings
}

func main() {
    str := "Hello World"
    k := 3
    substrings := getKLengthSubstrings(str, k)
    fmt.Println("All K length substrings:", substrings)
}

Output

All K length substrings: [Hel ell llo lo  o W  Wo Wor orl rld]

2 Get All K Length Substrings in String for K=4

In this example,

  1. We define a function named getKLengthSubstrings that takes a string str and an integer k as parameters.
  2. We initialize an empty slice of strings named substrings to store the K length substrings.
  3. We use a loop to iterate through the string, extracting substrings of length k using slicing.
  4. Inside the loop, we append each extracted substring to the substrings slice.
  5. The loop continues until the end of the string is reached.
  6. We return the substrings slice.
  7. In the main function, we define a string str and an integer k with specific values.
  8. We call the getKLengthSubstrings function with str and k and store the result in the variable substrings.
  9. Finally, we print the substrings to standard output.

Go Program

package main

import "fmt"

func getKLengthSubstrings(str string, k int) []string {
    var substrings []string
    for i := 0; i <= len(str)-k; i++ {
        substrings = append(substrings, str[i:i+k])
    }
    return substrings
}

func main() {
    str := "Hello World"
    k := 4
    substrings := getKLengthSubstrings(str, k)
    fmt.Println("All K length substrings:", substrings)
}

Output

All K length substrings: [Hell ello llo  lo W o Wo  Wor Worl orld]

Summary

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


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