[Solved] Given a list of integers, how can you create a formatted string showing each number padded to 3 digits separated by commas?Example: [4, 15, 123] -> "004, 015, 123" | C Sharp (C#)

C Sharp (C#) - Strings and StringBuilder

Given a list of integers, how can you create a formatted string showing each number padded to 3 digits separated by commas?
Example: [4, 15, 123] -> "004, 015, 123"

Astring.Join(", ", numbers.Select(n => $"{n:D3}"))

Bstring.Join(", ", numbers.Select(n => $"{n:F3}"))

Cstring.Join(", ", numbers.Select(n => $"{n:000}"))

Dstring.Join(", ", numbers.Select(n => $"{n:3}"))

Step-by-Step Solution

Solution:

Step 1: Understand padding format D3
:D3 pads integer with zeros to 3 digits.
Step 2: Use LINQ Select with interpolation
numbers.Select(n => $"{n:D3}") formats each number correctly.
Step 3: Join with commas
string.Join combines formatted strings with commas.
Final Answer:
string.Join(", ", numbers.Select(n => $"{n:D3}")) -> Option A
Quick Check:
Use :D3 for zero-padding integers [OK]

Quick Trick: Use :D3 to pad integers to 3 digits inside Select [OK]

Common Mistakes:

MISTAKES

Using :F3 which formats as float
Using :000 which is invalid format
Using :3 which does not pad with zeros

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More C Sharp (C#) Quizzes

Given a list of integers, how can you create a formatted string showing each number padded to 3 digits separated by commas?

Step 1: Understand padding format D3

Step 2: Use LINQ Select with interpolation

Step 3: Join with commas

Final Answer:

Quick Check:

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