Kotlin - Data Types
You want to represent the decimal number 255 in Kotlin using a binary literal with underscores for readability. Which of the following is the best way to write it?
You want to represent the decimal number 255 in Kotlin using a binary literal with underscores for readability. Which of the following is the best way to write it?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Convert decimal 255 to binary
255 in binary is 11111111 (eight ones).Step 2: Add underscores for readability
Grouping bits in fours is common, so 1111_1111 is clearer and valid.Step 3: Check options for correctness
0b1111_1111correctly uses underscores and matches 255.0b11111111is correct but less readable.0b1111_1110is 254, and0b1111_11112has invalid digit '2'.Final Answer:
0b1111_1111 -> Option AQuick Check:
Binary 1111_1111 = 255 decimal [OK]
Quick Trick: Group binary digits in fours with underscores [OK]
Common Mistakes:
MISTAKES- Using wrong binary digits
- Adding invalid digits like 2
- Not grouping bits for readability
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