posted 4 years ago

Hi all, I had this question in mind from many days. Why should we learn fibonacci series? While in college we had this in our syllabus. Write a java program to print Fibonacci series till N. Where N is a number.

Not only this, we even had java program to check whether given number is armstrong or not (153 for example).

I wonder why should we learn them. I dint use any of them till now. Can anyone please tell me what is it real purpose.

Thank you, good day.

Not only this, we even had java program to check whether given number is armstrong or not (153 for example).

I wonder why should we learn them. I dint use any of them till now. Can anyone please tell me what is it real purpose.

Thank you, good day.

Love all, trust a few, do wrong to none.

posted 4 years ago

It's not because the Fibonacci series is useful in everyday life as a business software developer, but because it's an interesting mathematical thing and something simple which you can use to learn what recursion is (it's often used as an exercise to learn to write a recursive program).

posted 4 years ago

Okay, thank you. But what is the use of Fibonacci series in real life?Jesper de Jong wrote:It's not because the Fibonacci series is useful in everyday life as a business software developer, but because it's an interesting mathematical thing and something simple which you can use to learn what recursion is (it's often used as an exercise to learn to write a recursive program).

Love all, trust a few, do wrong to none.

posted 4 years ago

PS: I mean its mathematical importance

Okay, thank you. But what is the use of Fibonacci series in real life?Jesper de Jong wrote:It's not because the Fibonacci series is useful in everyday life as a business software developer, but because it's an interesting mathematical thing and something simple which you can use to learn what recursion is (it's often used as an exercise to learn to write a recursive program).

PS: I mean its mathematical importance

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posted 4 years ago

Did you click on that link in Jesper's post ?

- 1

chaitanya karthikk wrote:Okay, thank you. But what is the use of Fibonacci series in real life?Jesper de Jong wrote:It's not because the Fibonacci series is useful in everyday life as a business software developer, but because it's an interesting mathematical thing and something simple which you can use to learn what recursion is (it's often used as an exercise to learn to write a recursive program).

Did you click on that link in Jesper's post ?

Joanne

Michael Matola

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posted 4 years ago

We have a small running joke about Fibonacci numbers at my work.

We use "powers of two" for estimating time on story cards: a 1-hour card, 2-hour, 4-hour, 8-hour, etc. At a meeting with some business analysts on the topic of whether they wanted us to record actual time spent in addition to estimates, one of the BSAs asked, "Well if you record actuals, are you going to stick to those numbers you use for estimating -- what are they? Fibonacci numbers?" So the joke became that we would continue to estimate in powers of two, but record actuals with Fibonacci numbers. In the end it they decided not to have us record actuals, so the point became moot. But we still make the occasional joke about the 5- or 13- hour story card. Or when struggling to make an estimate, pick some value between the powers of two we're debating between and wonder loudly if it's a Fibonacci number and whether we should switch to the Fibonacci series for estimating.

We use "powers of two" for estimating time on story cards: a 1-hour card, 2-hour, 4-hour, 8-hour, etc. At a meeting with some business analysts on the topic of whether they wanted us to record actual time spent in addition to estimates, one of the BSAs asked, "Well if you record actuals, are you going to stick to those numbers you use for estimating -- what are they? Fibonacci numbers?" So the joke became that we would continue to estimate in powers of two, but record actuals with Fibonacci numbers. In the end it they decided not to have us record actuals, so the point became moot. But we still make the occasional joke about the 5- or 13- hour story card. Or when struggling to make an estimate, pick some value between the powers of two we're debating between and wonder loudly if it's a Fibonacci number and whether we should switch to the Fibonacci series for estimating.

posted 4 years ago

I find the usage of these "golden numbers" in the real world very interesting. Lots of things are "3 by 5" or "5 by 8" -- it is like designers are using these numbers in a Feng Shui sort of way...

Henry

Joanne Neal wrote:chaitanya karthikk wrote:

Did you click on that link in Jesper's post ?

I find the usage of these "golden numbers" in the real world very interesting. Lots of things are "3 by 5" or "5 by 8" -- it is like designers are using these numbers in a Feng Shui sort of way...

Henry

posted 4 years ago

Yeah I read that link. It speaks about the histroy of fibonacci series, its occurrences in nature and some mathematical things. However I am not a mathematical expert and could not understand it. I want to know the applications of fibonacci series in computer applications.Joanne Neal wrote:chaitanya karthikk wrote:

Did you click on that link in Jesper's post ?

Love all, trust a few, do wrong to none.

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posted 4 years ago

because they ask about it it in a fresher's interview.

- 2

chaitanya karthikk wrote: Can anyone please tell me what is it real purpose.

because they ask about it it in a fresher's interview.

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posted 4 years ago

Because you can't ask a freshman student to write a program that manages a stock exchange.

There is a LOT to learn when you are just starting out. You want the student spend their time learning about programming things, not what he or she is trying to model. So, you find something that is easy to understand (it probably takes about 10 minutes to understand a fibonacci series), and then the student can focus on learning how to code.

There is a LOT to learn when you are just starting out. You want the student spend their time learning about programming things, not what he or she is trying to model. So, you find something that is easy to understand (it probably takes about 10 minutes to understand a fibonacci series), and then the student can focus on learning how to code.

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posted 4 years ago

And for those who don't know, Fibonacci numbers

- 2

Michael Matola wrote:We have a small running joke about Fibonacci numbers at my work.

We use "powers of two" for estimating time on story cards: a 1-hour card, 2-hour, 4-hour, 8-hour, etc. At a meeting with some business analysts on the topic of whether they wanted us to record actual time spent in addition to estimates, one of the BSAs asked, "Well if you record actuals, are you going to stick to those numbers you use for estimating -- what are they? Fibonacci numbers?" So the joke became that we would continue to estimate in powers of two, but record actuals with Fibonacci numbers. In the end it they decided not to have us record actuals, so the point became moot. But we still make the occasional joke about the 5- or 13- hour story card. Or when struggling to make an estimate, pick some value between the powers of two we're debating between and wonder loudly if it's a Fibonacci number and whether we should switch to the Fibonacci series for estimating.

And for those who don't know, Fibonacci numbers

*are*used for estimation under some methodologies - see Planning Poker. Often the numbers used are not strictly Fibonacci numbers, but mostly Fibonacci numbers with a few others thrown in. There's not really a good reason for this, other than that (a) it discourages over-precision, and (b) it's more fine-grained than the powers-of-two approach. And (c) at larger values they round off the values away from the Fibonacci values, just to keep the math simpler. I'm sure they could have found other sequences with similar properties, but Fibonacci series are familiar to many programmers, so why not?

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posted 4 years ago

Cool. Obviously I didn't know this.

Mike Simmons wrote:And for those who don't know, Fibonacci numbersareused for estimation under some methodologies - see Planning Poker.

Cool. Obviously I didn't know this.

posted 4 years ago

Because they happen in nature. A lot of photographic composition is based on the golden ratio, which is a Fibonacci series. See

http://photofocus.com/2013/03/01/fibonacci-nautilus-shells-and-photography/

http://photofocus.com/2013/03/01/fibonacci-nautilus-shells-and-photography/

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posted 4 years ago

So if you ever meet young Poesy Emmeline Fibonacci Nautilus Taylor Doctorow, you can have an informed conversation with her about her name.

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It is sorta covered in the JavaRanch Style Guide. |