How to Reverse an Array in Go - Step by Step Examples

How to Reverse an Array in Go ?

Answer

To reverse an array in Go, you can iterate through the array and swap elements from start to end until reaching the middle.

✐ Examples

1 Reverse Array of Integers

In this example,

We have an array named intArray containing integers.
We define two variables start and end to track the start and end indices of the array.
We use a loop to swap elements from start to end until start is greater than or equal to end (indicating we've reached the middle).
We print the reversed array to demonstrate the reversal.

Go Program

package main
import "fmt"
func main() {
    intArray := []int{1, 2, 3, 4, 5}
    for start, end := 0, len(intArray)-1; start < end; start, end = start+1, end-1 {
        intArray[start], intArray[end] = intArray[end], intArray[start]
    }
    fmt.Println("Reversed Array:", intArray)
}

Output

Reversed Array: [5 4 3 2 1]

2 Reverse Array of Strings

In this example,

We have an array named strArray containing strings.
We define two variables start and end to track the start and end indices of the array.
We use a loop to swap elements from start to end until start is greater than or equal to end (indicating we've reached the middle).
We print the reversed array to demonstrate the reversal.

Go Program

package main
import "fmt"
func main() {
    strArray := []string{"apple", "banana", "cherry"}
    for start, end := 0, len(strArray)-1; start < end; start, end = start+1, end-1 {
        strArray[start], strArray[end] = strArray[end], strArray[start]
    }
    fmt.Println("Reversed Array:", strArray)
}

Output

Reversed Array: [cherry banana apple]

Summary

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

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How to Reverse an Array in Go - Step by Step Examples

How to Reverse an Array in Go ?

Answer

✐ Examples

1 Reverse Array of Integers

Go Program

Output

2 Reverse Array of Strings

Go Program

Output

Summary

More Go Arrays Tutorials