Kotlin - Operators and Expressions
You want to calculate the average of three large integer scores (e.g., 1000000000 each) in Kotlin and get a precise decimal result. Which code snippet correctly does this?
You want to calculate the average of three large integer scores (e.g., 1000000000 each) in Kotlin and get a precise decimal result. Which code snippet correctly does this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand integer division problem
Dividing integers by integer 3 causes integer division, losing decimals.Step 2: Convert all scores to Double before division
Converting each score to Double ensures floating-point division and precise average.Step 3: Check each option
val avg = (score1.toDouble() + score2.toDouble() + score3.toDouble()) / 3 converts all scores to Double before adding and dividing, giving correct decimal average.Final Answer:
val avg = (score1.toDouble() + score2.toDouble() + score3.toDouble()) / 3 -> Option AQuick Check:
Convert all to Double before division for decimal average [OK]
Quick Trick: Convert all integers to Double before dividing for decimals [OK]
Common Mistakes:
MISTAKES- Dividing integers directly causing integer division
- Converting sum to Double after integer division
- Converting only one score to Double
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