KwickClips Java · 43 sec · free
Which loop suits printing a table 1 to 10?
Short answer. A for loop, because the count is known.
Which loop suits counting the digits of a number?
A while loop, because the count is not known in advance.
Pick a loop
| When | Loop |
|---|---|
| Count known | for |
| Count unknown | while |
| At least once | do-while |
Remember
| for: known count |
| while: unknown count |
| do-while: once or more |
Three loops. How do you pick the right one? Here is the rule. Known count, use for. Unknown count, use while. Must run once, use do while. Remember. For, known. While, unknown. Do while, once or more.
This clip is from the full lesson: Loops in Java: for, while and do-while — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ICSE Class 9 Computer Applications, ICSE Class 9 Computer Applications, ICSE Class 9 Computer Applications, ISC Class 11 Computer Science (868)
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