[Solved] What is the output of the following Swift code?let setA: Set = [1, 2, 3, 4] let setB: Set = [3, 4, 5, 6] let result = setA.subtracting(setB) print(result.sorted()) | Swift

Swift - Collections

What is the output of the following Swift code?

let setA: Set = [1, 2, 3, 4]
let setB: Set = [3, 4, 5, 6]
let result = setA.subtracting(setB)
print(result.sorted())

A[5, 6]

B[3, 4]

C[1, 2]

D[1, 2, 3, 4, 5, 6]

Step-by-Step Solution

Solution:

Step 1: Understand subtracting operation
setA.subtracting(setB) returns elements in setA that are NOT in setB. Here, setA is [1,2,3,4], setB is [3,4,5,6].
Step 2: Calculate difference
Elements 3 and 4 are in both sets, so they are removed. Remaining elements in setA are 1 and 2.
Final Answer:
[1, 2] -> Option C
Quick Check:
subtracting = elements only in first set [OK]

Quick Trick: Subtracting removes elements found in second set from first [OK]

Common Mistakes:

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