[Solved] Identify the error in this Swift code snippet:var letters = ["a", "b", "c"] letters.remove(at: 3) — Ans: Index out of range error because index 3 does not exist. | Swift

Swift - Collections

Identify the error in this Swift code snippet:

var letters = ["a", "b", "c"]
letters.remove(at: 3)

ASyntax error due to missing parentheses.

BIndex out of range error because index 3 does not exist.

CNo error; element at index 3 is removed.

DRuntime error because array is empty.

Step-by-Step Solution

Solution:

Step 1: Check array indices
Array has elements at indices 0, 1, 2 only.
Step 2: Remove at index 3
Index 3 is out of range, causing runtime error.
Final Answer:
Index out of range error because index 3 does not exist. -> Option B
Quick Check:
remove(at:) with invalid index = runtime error [OK]

Quick Trick: Indices start at 0; max index is count-1 [OK]

Common Mistakes:

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