KwickClips Python · 43 sec · free
How many trace lines do you write?
Short answer. One for every run of the inner body.
What happens to col when row changes?
It restarts from its start value.
Trace table
| row | col | Prints |
|---|---|---|
| 1 | 1 | 1 |
| 1 | 2 | 2 |
| 2 | 1 | 2 |
| 2 | 2 | 4 |
Remember
| One table line per inner run |
| col restarts when row changes |
Two loops, row times col. What prints? Both loops run one and two. One times one. One times two. Two times one. Two times two. Remember two things. Write one line per inner run. Col restarts when row changes.
This clip is from the full lesson: Nested Loops and Pattern Programs — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Artificial Intelligence (417), CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), ICSE Class 10 Computer Applications
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