Problem 1749. Factorial !

Created by Disha

Solve Later

<div style = "text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; "><div style="block-size: 21px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 10.5px; transform-origin: 407px 10.5px; vertical-align: baseline; "><div style="font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 254.5px 8px; transform-origin: 254.5px 8px; unicode-bidi: normal; "><span style="">Calculate the factorial of a non-negative integer without using the built in function</span></span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; "><span style=""> </span></span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 28.5px 8px; transform-origin: 28.5px 8px; unicode-bidi: normal; "><span style="font-weight: 700; ">factorial</span></span></div></div></div>

Solve

Solution Stats

482 Solutions
114 Solvers

Last Solution submitted on Feb 15, 2023

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

Frequency Domain on 25 Jul 2013

I dont understand what you wanted to do with your test no.4. why dont you just check our answer against the actual factorial, instead of hard coding (truncated) numbers?

Marcel on 3 Jan 2014

testcase is nok:
6.6895e+198==factorial(120)
ans =
0

Björn on 11 Dec 2015

Use if statement for test 4...

Dyuman Joshi on 8 Mar 2021

Faulty test case has been corrected. Those who have solved with respect to the rounded test case kindly solve the question again. It's a fairly simple one!

Solution Comments

Solution 541155

1 Comment

1 Comment

B. C. on 5 Dec 2014

fail for x=120?! 'isequal(factorial(120),y)' gives me 0...

Solution 438304

1 Comment

1 Comment

Neeraj Badamikar on 5 May 2014

My solution works in Matlab, but fails the last test here.. :(

Solution 301407

1 Comment

1 Comment

Swapnali Gujar on 10 Aug 2013

I am trying to solve this problem and first 2 test cases are passed, but assertion is failing for last test case. I also used the format as 'short eng', here the y_correct is read by Matlab as '6.689500000000000e+198', but my program is calculating answer as '6.689502913449124e+198' for x = 120 and thats why its failing. Any suggestions ?

Solution 292989

1 Comment

1 Comment

Ramy Mohamed on 31 Jul 2013

There is something wrong with the last test; The number are truncated. y_correct should be 6.689502913449135e+198; while in the test it is given as 6.689500000000000e+198

Solution 290276

1 Comment

1 Comment

Jan Orwat on 26 Jul 2013

fake solution, it works until there is a mistake in test 4

Solution 290264

1 Comment

1 Comment

Mohammed Manna on 26 Jul 2013

I KNOW THIS SOLUTION IS CORRECT....STUPID IDE IS NOT ACCEPTING IT....YOU CAN RUN IT ON A STANDALONE MATLAB AND SEE IF IT WORKS!

Solution 290148

1 Comment

1 Comment

Tobias Schäfer on 26 Jul 2013

Nice solution for that rounding problem.

Solution 289341

1 Comment

1 Comment

Evan on 25 Jul 2013

There should be a test in the test suite to catch any uses of "factorial" in the submitted code, as is done here:
http://www.mathworks.com/matlabcentral/cody/problems/498-find-the-kronecker-tensor-product-without-using-kron

Also, is the convention here to round to five significant digits? If so, this should probably be noted in the problem statement.

Problem Recent Solvers114

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 1749. Factorial !

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers114

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Problem 1749. Factorial !

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers114

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Players