Problem 566. Sum of first n terms of a harmonic progression

Created by Srivardhini

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<div style = "text-align: start; line-height: 20px; 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: normal; text-decoration: none; white-space: normal; "><div style="display: block; min-width: 0px; padding-top: 0px; transform-origin: 332px 21px; vertical-align: baseline; perspective-origin: 332px 21px; "><div style="font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-bottom: 9px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; transform-origin: 309px 21px; white-space: pre-wrap; perspective-origin: 309px 21px; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="display: inline; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; transform-origin: 0px 0px; perspective-origin: 0px 0px; "><span style="">Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....</span></span></div></div></div>

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Solution Stats

1408 Solutions
365 Solvers

Last Solution submitted on Mar 30, 2023

Last 200 Solutions

Problem Comments

14 Comments

14 Comments

Show 11 older comments

Marcel on 9 Jan 2014

I didn't know "roundn". Thanks.

Ilias Patelakis on 16 Jul 2017

My solution is correct BUT the test cases result in error due to the roundn() function.

Pablo Lobo on 26 Aug 2017

Please solve the situation with the test cases. Same issues as the other people commenting. Problems with roundn.

M on 31 Oct 2017

Please update the tests to deal with the "roundn" issue.

Kyle Chappell on 12 Nov 2017

I thought roundn may have been replaced in the latest version of MATLAB, but it seems to still be present in 2017a. Any idea why it's not working in the Cody interpreter?

Yingcong Zhou on 24 Dec 2017

There is a bug in the tests.

Mahadev Krishnan on 26 Dec 2017

Please fix the issue of roundn

guoping qiu on 31 Jan 2018

the matlab2017b does have the " roundn" function ,
all the functions are combined with the "round" function .

Aamod Garg on 4 Mar 2018

The tests have bugs in them. Please correct them as soon as possible.

Naimul Hassan on 20 Mar 2018

Fix the issue of roundn. The test cases are not working.

Luca Balbi on 4 Apr 2018

The roundn function is not recognized. The test cases are not working.

mario alonzo on 16 Jul 2018

This test has a problem with roundn function. I have also tried to use elseif and insert the exact values of s, but it doesn't work.

Srishti Saha on 8 Aug 2018

@srivardhini Kindly look into the issue

goc3 on 10 Aug 2018

The test suite has been updated and the problem should function properly now. Various recent solutions were tested and did work. Feel free to resubmit prior solutions.

Solution Comments

Solution 2676656

1 Comment

1 Comment

Are Mjaavatten on 11 Jul 2020

This is bullshit, of course. Accepted only because of a bug in the test suite. Argument 2 to the round function should be 4, not -4!

Solution 1598741

1 Comment

1 Comment

Bhaskar R on 3 Aug 2018

Undefined function 'roundn' for input arguments of type 'double'.

Error in Test2 (line 2)
y_correct = roundn(3.5746,-4);

Solution 1545018

1 Comment

1 Comment

Jafar Mortadha on 31 May 2018

Test suite is using a function not supported for double precision numbers! The poster should re-think!

Solution 1488709

1 Comment

1 Comment

Tiago Dias on 12 Apr 2018

I am geting an error on the function roundn that is on Test 2 and Test 3, my version on matlab gives the y_correct but here doesnt accept

Solution 1478366

1 Comment

1 Comment

Michael on 4 Apr 2018

I'm getting an undefined function error for 'roundn' in your test suite. What gives?

Solution 1403212

1 Comment

1 Comment

John on 3 Jan 2018

Why am I getting the following message:

Undefined function 'roundn' for input arguments of type 'double'.

Solution 1329588

1 Comment

1 Comment

JaGa17 on 6 Nov 2017

Why does it not pass the test Suite?

Solution 1301326

1 Comment

1 Comment

jean claude on 19 Oct 2017

there is a problem here please update the tests to be matched with the results..

Solution 1297846

1 Comment

1 Comment

Yaakoub Ben Romdhane on 18 Oct 2017

Undefined function 'roundn' for input arguments of type 'double'. Error in Test2 (line 2) y_correct = roundn(3.5746,-4);
the problem is in the (line 2) ??!!

Solution 1258396

1 Comment

1 Comment

Andrew Dobrovolc on 28 Aug 2017

the second and third tests in the test suite are using an undefined function roundn. This is causing those test cases to crash, please fix this problem. You can either remove the use of roundn, or provide the test case with the functions code.

Solution 1257484

2 Comments

2 Comments

dayseeker on 25 Aug 2017

its showing an error that i can't understand , i did this problem correctly. But still showing an error,"Undefined function 'roundn' for input arguments of type double"

Pablo Lobo on 26 Aug 2017

Please solve the situation with the test cases. Same issues as the other people commenting. Problems with roundn.

Solution 1232232

1 Comment

1 Comment

Augusto Mazzei on 15 Jul 2017

Undefined function 'roundn' for input arguments of type 'double'. Error in Test2 (line 2) y_correct = roundn(3.5746,-4); ???

Solution 1214385

3 Comments

3 Comments

Rafael Hernandez-Walls on 16 Jun 2017

My function is correct but the system using the function roundnand have a error:

Undefined function 'roundn' for input arguments of type 'double'. Error in TestPoint2 (line 2) y_correct = roundn(3.5746,-4);

???????????????????????

Rafael Hernandez-Walls on 16 Jun 2017

My function is correct but the system using the function roundn and have a error:

Undefined function 'roundn' for input arguments of type 'double'. Error in TestPoint2 (line 2) y_correct = roundn(3.5746,-4); ???????????????????????

John Breuer on 20 Jun 2017

I am getting the same problem. The test case function roundn() is undefined.

Solution 1203075

1 Comment

1 Comment

Richard on 2 Jun 2017

Is there trick to push

function y = roundn(x,n)
y = round( x, -n );
end

into Cody?

Solution 102635

1 Comment

1 Comment

Christopher on 25 Jun 2012

I don't think the second test case is correct.

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Problem 566. Sum of first n terms of a harmonic progression

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Problem 566. Sum of first n terms of a harmonic progression

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Last 200 Solutions

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Problem Recent Solvers365

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