Kotlin - Loops and Ranges
Why does the Kotlin loop
for (i in 10 downTo 1 step 3) print 10, 7, 4, 1 instead of 10, 7, 4?Why does the Kotlin loop for (i in 10 downTo 1 step 3) print 10, 7, 4, 1 instead of 10, 7, 4?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand how downTo with step works
The loop starts at 10 and subtracts 3 each time: 10, 7, 4, 1.Step 2: Recognize inclusion of end value
The loop includes the end value 1 because it fits exactly in the stepping sequence.Final Answer:
Because the loop includes the end value if it matches the step sequence. -> Option CQuick Check:
Loop includes end if reachable by step [OK]
Quick Trick: Loop includes end if step lands exactly on it [OK]
Common Mistakes:
MISTAKES- Thinking loop stops before end value
- Assuming extra iteration is error
- Confusing increment with decrement
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