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How to check if Two Arrays have Same Elements (Regardless of Order) in Go

How to check if Two Arrays have Same Elements (Regardless of Order) in Go ?

Answer

To check if two arrays have the same elements regardless of order in Go, you can sort both arrays and then compare them element by element.


✐ Examples

1 Arrays with Same Elements (Order Ignored)

In this example,

  1. We create two arrays named arr1 and arr2 with the same elements but in different order.
  2. We sort both arrays using the sort.Ints() function from the sort package.
  3. We then define a function arraysEqual that checks if the sorted arrays are equal.
  4. Finally, we call arraysEqual to compare the arrays and print the result to the console.

Go Program

package main

import (
	"fmt"
	"sort"
)

func main() {
	arr1 := []int{1, 2, 3}
	arr2 := []int{3, 1, 2}

	sort.Ints(arr1)
	sort.Ints(arr2)

	isEqual := arraysEqual(arr1, arr2)
	fmt.Println(isEqual)
}

func arraysEqual(arr1, arr2 []int) bool {
	if len(arr1) != len(arr2) {
		return false
	}
	for i := range arr1 {
		if arr1[i] != arr2[i] {
			return false
		}
	}
	return true
}

Output

true

2 Arrays with Different Elements (Order Ignored)

In this example,

  1. We create two arrays named arr3 and arr4 with different elements.
  2. We sort both arrays using the sort.Ints() function from the sort package.
  3. We then define a function arraysEqual that checks if the sorted arrays are equal.
  4. Finally, we call arraysEqual to compare the arrays and print the result to the console.

Go Program

package main

import (
	"fmt"
	"sort"
)

func main() {
	arr3 := []int{1, 2, 3}
	arr4 := []int{4, 5, 6}

	sort.Ints(arr3)
	sort.Ints(arr4)

	isEqual := arraysEqual(arr3, arr4)
	fmt.Println(isEqual)
}

func arraysEqual(arr1, arr2 []int) bool {
	if len(arr1) != len(arr2) {
		return false
	}
	for i := range arr1 {
		if arr1[i] != arr2[i] {
			return false
		}
	}
	return true
}

Output

false

Summary

In this tutorial, we learned How to check if Two Arrays have Same Elements (Regardless of Order) in Go language with well detailed examples.


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  3. How to Access Array Elements in Go ?
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  13. How to get the Index of Specified Element in an Array in Go ?
  14. How to check if Specified Element is present in the Array in Go ?
  15. How to count the Number of Occurrences of Specified Element in the Array in Go ?
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  17. How to Sort an Array in Ascending Order in Go ?
  18. How to Sort an Array in Descending Order in Go ?
  19. How to create a Two Dimensional Array in Go ?
  20. How to Iterate over a Two Dimensional Array in Go ?
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