Swift Challenge 003: Unique elements of two arrays
Write a program to make an array of unique elements from two arrays. Sort the output array.
Challenge: Write a program to make an array of unique elements from two arrays. Sort the output array.
Logic: Convert array into set and do set operations (intersect in this case)
let array1: [Int] = [1,3,6,78,35,55,120,12] //another method of declaring array, since swift can infer type let array2 = [12,24,35,24,88,120,155] let set1 = Set(array1) let set2 = Set(array2) //this will output [12,120,35] print(set1.intersect(set2)) //if you want a sorted output //this will output [12,35,120] print(set1.intersect(set2).sort()) //can also be one long statement print(Set([1,3,6,78,35,55,120,12]).intersect([12,24,35,24,88,120,155]).sort())
- Arrays are ordered collection (it is not an automatic sorted collection, though)
- Sets have distinct values
- Convert both arrays into sets and intersect both sets
- arrays & sets
- set intersection
- sort collections
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