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How to find Union of Two Sets in Go

How to find Union of Two Sets in Go ?

Answer

In Go, you can find the union of two sets using maps.


✐ Examples

1 Union of Two Sets using Maps

In this example,

  1. We create two maps representing sets named set1 and set2.
  2. We iterate over the keys of set2 and add them to set1.

Go Program

package main
import "fmt"

func main() {
    set1 := map[int]bool{1: true, 2: true, 3: true}
    set2 := map[int]bool{3: true, 4: true, 5: true}
    for k := range set2 {
        set1[k] = true
    }
    fmt.Println(set1)
}

Output

map[1:true 2:true 3:true 4:true 5:true]

2 Union of Two Sets using Function

In this example,

  1. We define a function named union that takes two map arguments representing sets.
  2. We iterate over the keys of the second set and add them to the first set.
  3. We return the updated first set.

Go Program

package main
import "fmt"

func union(set1, set2 map[int]bool) map[int]bool {
    for k := range set2 {
        set1[k] = true
    }
    return set1
}

func main() {
    set1 := map[int]bool{1: true, 2: true, 3: true}
    set2 := map[int]bool{3: true, 4: true, 5: true}
    result := union(set1, set2)
    fmt.Println(result)
}

Output

map[1:true 2:true 3:true 4:true 5:true]

Summary

In this tutorial, we learned How to find Union of Two Sets in Go language with well detailed examples.


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  4. How to create a Set of size N in Go ?
  5. How to create a Set of Numbers from 1 to N in Go ?
  6. How to create a Set of integers in Go ?
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  8. How to Access Items in a Set in Go ?
  9. How to get a Random Item in a Set in Go ?
  10. How to Iterate Over a Set in Go ?
  11. How to check if a Set is Empty in Go ?
  12. How to check if a Set is Not Empty in Go ?
  13. How to get Subset from a Set in Go ?
  14. How to check if a Specific Item is present in the Set in Go ?
  15. How to check if a Set contains all the items of Another Set in Go ?
  16. How to Sort Items of a Set in Go ?
  17. How to Copy a Set in Go ?
  18. How to add an Item to a Set in Go ?
  19. How to find Union of Two Sets in Go ?
  20. How to find Intersection of Two Sets in Go ?
  21. How to check if Two Sets are Equal in Go ?
  22. How to Convert a Set of Integers to a Set of Strings in Go ?
  23. How to Convert a Set of Strings to a Set of Integers in Go ?
  24. How to Convert a Set of Floats to a Set of Strings in Go ?
  25. How to Convert a Set of Strings to a Set of Floats in Go ?
  26. How to Filter Items of a Set based on a Condition in Go ?
  27. How to Remove Specific Item from a Set in Go ?
  28. How to Remove Items from Set based on a Condition in Go ?
  29. How to create a Set of Sets in Go ?