Hello everyone, in this tutorial, we will show you how to rotate an array in golang programming language. The example program has been tested and shared in the post.

### Function – Rotate an array in Golang

The below two functions are responsible to rotate a given integer array. The leftRotate() function will perform array rotation based on the count and leftRotatebyOne() will do the rotate only one time.

```// function rotate based on the count
func leftRotate(arr []int, count int) {
for i := 0; i < count; i++ {
leftRotatebyOne(arr); // calling function to perform rotation ont time
}
}
// function perform left rotate only one time
func leftRotatebyOne(arr []int) {
var i int = 0
var temp int = arr;
for ; i < len(arr) - 1; i++ {
arr[i] = arr[i+1];
}
arr[i] = temp;
}
```

### Full Example

```package main
import "fmt"
func main() {
// defining integer array
var numbers []int = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fmt.Println("Before Rotate:", numbers)
// calling a function to rotate an array
leftRotate(numbers, 3)
fmt.Println("After Rotate:", numbers)
}
// function rotate based on the count
func leftRotate(arr []int, count int) {
for i := 0; i < count; i++ {
leftRotatebyOne(arr); // calling function to perform rotation ont time
}
}
// function perform left rotate only one time
func leftRotatebyOne(arr []int) {
var i int = 0
var temp int = arr;
for ; i < len(arr) - 1; i++ {
arr[i] = arr[i+1];
}
arr[i] = temp;
}
```

### Output

```Before Rotate: [1 2 3 4 5 6 7 8 9 10]
After Rotate: [4 5 6 7 8 9 10 1 2 3]
```

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