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Getting union of sets in Julia – union() and union!() Methods

  • Last Updated : 26 Mar, 2020

The union() is an inbuilt function in julia which is used to construct the union of the specified sets.

Syntax: union(s, itrs…)

Parameters:

  • s: Specified first set.
  • itrs: Specified second set.

Returns: It returns the constructed union of the specified sets.

Example:






# Julia program to illustrate 
# the use of union() method
   
# Getting the constructed union of the specified sets.
println(union([5, 10], [15, 20]))
println(union([2, 4], [2, 4, 6]))
println(union([1, 3], 5:7))
println(union(Set([2, 4, 6]), 1:5))

Output:

[5, 10, 15, 20]
[2, 4, 6]
[1, 3, 5, 6, 7]
[4, 2, 6, 1, 3, 5]

union!()

The union!() is an inbuilt function in julia which is used to construct the union of passed in sets and overwrite s with the result.

Syntax:
union!(s::Union{AbstractSet, AbstractVector}, itrs…)

Parameters:

  • s: Specified set.
  • itrs: Specified iterator.

Returns: It returns the constructed union of passed in sets and overwrite s with the result.

Example:




# Julia program to illustrate 
# the use of union !() method
   
# Getting constructed union of passed 
# in sets and overwrite s with the result.
s1 = Set([1, 2, 3, 4]);
union !(s1, 5:7:9);
println(s1)
  
s2 = Set([1, 2, 3, 4]);
union !(s2, 1:2:3);
println(s2)

Output:

Set([4, 2, 3, 5, 1])
Set([4, 2, 3, 1])



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