intersect

intersect(s1,s2...) âˆ©(s1,s2)

Construct the intersection of two or more sets. Maintains order and multiplicity of the first argument for arrays and ranges.

Examples

julia> set1 = Set(3, 4, 5, 6) 
       set2 = Set(1, 3, 4)
       intersect(set1, set2)
Set{Int64}({4,3})

julia> set1 = Set(3, 4, 5, 6) 
       set2 = Set(1, 2)
       intersect(set1, set2) 
Set{Int64}({})

julia> a = Set([0:3:30]);   # table of 3

julia> b = Set([0:5:50]);   # table of 5

julia> intersect(a, b)
Set{Int64}({0,15,30})

Find the intersection of two arrays:

julia> arr1 = [1, 2, 3, 4, 5];
julia> arr2 = [4, 5, 6, 7, 8];
julia> intersect(arr1, arr2)
2-element Array{Int64,1}:
4
5

This example finds the common elements between arr1 and arr2 using the intersect function.

Find the intersection of multiple arrays:

julia> arr1 = [1, 2, 3, 4, 5];
julia> arr2 = [4, 5, 6, 7, 8];
julia> arr3 = [3, 4, 5, 9, 10];
julia> intersect(arr1, arr2, arr3)
2-element Array{Int64,1}:
4
5

In this example, the intersect function is used to find the common elements among arr1, arr2, and arr3.

Intersect two sets with different element types:
```
julia> set1 = Set([1, 2, 3, 4]);
julia> set2 = Set([3.0, 4.0, 5.0]);
julia> intersect(set1, set2)
Set{Float64} with 2 elements:
3.0
4.0
```
The intersect function can also be used to find the common elements between sets of different element types.

Common mistake example:

julia> intersect([1, 2, 3], (3, 4, 5))
ERROR: MethodError: no method matching intersect(::Array{Int64,1}, ::Tuple{Int64,Int64,Int64})

In this example, the intersect function is used with an array and a tuple. However, the intersect function does not support intersection between arrays and tuples. Make sure to provide valid arguments to the intersect function that are compatible with each other.

User Contributed Notes

Add a Note

The format of note supported is markdown, use triple backtick to start and end a code block.

intersect

Examples

See Also

User Contributed Notes

Add a Note