How to Rotate Elements in an Array in Go - Step by Step Examples

How to Rotate Elements in an Array in Go ?

Answer

To rotate elements in an array using Go, you can implement a custom rotation function that shifts elements by a specified number of positions.

✐ Examples

1 Rotate Array of Integers

In this example,

We have an array named intArray containing integers.
We implement a custom rotate function that shifts elements by a specified number of positions.
We print the rotated array to demonstrate the rotation.

Go Program

package main
import (
    "fmt"
)

func rotateArray(array []int, positions int) []int {
    n := len(array)
    positions %= n
    reverseArray(array, 0, n-1)
    reverseArray(array, 0, positions-1)
    reverseArray(array, positions, n-1)
    return array
}

func reverseArray(array []int, start int, end int) {
    for start < end {
        array[start], array[end] = array[end], array[start]
        start++
        end--
    }
}

func main() {
    intArray := []int{1, 2, 3, 4, 5}
    fmt.Println("Rotated Array:", rotateArray(intArray, 2))
}

Output

Rotated Array: [4 5 1 2 3]

2 Rotate Array of Strings

In this example,

We have an array named strArray containing strings.
We implement a custom rotate function that shifts elements by a specified number of positions.
We print the rotated array to demonstrate the rotation.

Go Program

package main
import (
    "fmt"
)

func rotateArray(array []string, positions int) []string {
    n := len(array)
    positions %= n
    reverseArray(array, 0, n-1)
    reverseArray(array, 0, positions-1)
    reverseArray(array, positions, n-1)
    return array
}

func reverseArray(array []string, start int, end int) {
    for start < end {
        array[start], array[end] = array[end], array[start]
        start++
        end--
    }
}

func main() {
    strArray := []string{"apple", "banana", "cherry", "date", "fig"}
    fmt.Println("Rotated Array:", rotateArray(strArray, 3))
}

Output

Rotated Array: [cherry date fig apple banana]

Summary

In this tutorial, we learned How to Rotate Elements in an Array in Go language with well detailed examples.

◀ Previous Next ▶

Go Tutorials

Go Programs

Go How-Tos

How to Rotate Elements in an Array in Go - Step by Step Examples

How to Rotate Elements in an Array in Go ?

Answer

✐ Examples

1 Rotate Array of Integers

Go Program

Output

2 Rotate Array of Strings

Go Program

Output

Summary

More Go Arrays Tutorials