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Nested for loops

3 replies on 1 page. Most recent reply: Aug 7, 2002 3:07 AM by Matt Gerrans

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Leo

Posts: 6
Nickname: dev313
Registered: Aug, 2002

Nested for loops

Posted: Aug 6, 2002 9:39 PM

What is a good process to learn how to manipulate nested for loops. It's easy to get lost in the trace through.

What I want to do is make a graphic like this one using a nested for loop.

**********
*********
********
*******
******
*****
****
***
**
*

Also,

*
**
***
****
*****
******
*******
********
*********
**********

How is this done??

Many thanks to everyone?

Leo

Leo

Posts: 6
Nickname: dev313
Registered: Aug, 2002

Re: Nested for loops

Posted: Aug 6, 2002 9:43 PM

These examples didn't come out the way I typed them in. The first example should look like this only with asterisks:

10 9 8 7 6 5 4 3 2 1
9 8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
7 6 5 4 3 2 1
6 5 4 3 2 1
5 4 3 2 1
4 3 2 1
3 2 1
2 1
1

The second one should look like this:

1
2 1
3 2 1
4 3 2 1
5 4 3 2 1
6 5 4 3 2 1
7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
9 8 7 6 5 4 3 2 1
10 9 8 7 6 5 4 3 2 1

Any ideas??

Leo

Posts: 6
Nickname: dev313
Registered: Aug, 2002

Re: Nested for loops

Posted: Aug 6, 2002 9:45 PM

nothing is right aligning like it should.

Matt Gerrans

Posts: 1153
Nickname: matt
Registered: Feb, 2002

Re: Nested for loops

Posted: Aug 7, 2002 3:07 AM

You could do either of those with a single for-loop, no nesting required.

If you want to practice nested loops, try implementing a simple sorting algorithm, like a selection sort on a List.

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