KwickClips Java · 40 sec · free
Which loops can run zero times?
Short answer. for and while, because they test before the body.
How many times does a do-while run at minimum?
Once.
i starts at 10, i <= 9
| Loop | Runs | Why |
|---|---|---|
| while | 0 times | tests first |
| do-while | 1 time | tests after |
Remember
| for, while: can run 0 times |
| do-while: at least once |
Can a loop run zero times? It depends on the loop. Ten is not nine or less. While tests first, so it runs zero times. Do while runs the body first, so once. For and while can run zero times. Do while runs at least once.
This clip is from the full lesson: Converting Between for, while and do-while, and Finite vs Infinite Loops — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ICSE Class 9 Computer Applications
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