Problem 325. 2 b | ~ 2 b

Created by Alan Chalker

Solve Later

{"parts":[{"partUri":"/matlab/document.xml","contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Given a string input, output true if there are 2 b's in it, false if otherwise</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Examples:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>'Macbeth' -&gt; false 'Publius Cornelius Dolabella' -&gt; true</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Note: sometimes it's the littlest things that matter....</w:t></w:r></w:p></w:body></w:document>","relationship":null}],"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","target":"/matlab/document.xml","relationshipId":"rId1"}]}

<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: 111px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 55.5px; transform-origin: 407px 55.5px; vertical-align: baseline; "><div style="block-size: 21px; 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: 223px 8px; transform-origin: 223px 8px; unicode-bidi: normal; "><span style="">Given a string input, output true if there are 2 b's in it, false if otherwise</span></span></div><div style="block-size: 21px; 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: 32px 8px; transform-origin: 32px 8px; unicode-bidi: normal; "><span style="">Examples:</span></span></div><div style="block-size: 21px; 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: 170px 8px; transform-origin: 170px 8px; unicode-bidi: normal; "><span style="">'Macbeth' -&gt; false 'Publius Cornelius Dolabella' -&gt; true</span></span></div><div style="block-size: 21px; 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: 159px 8px; transform-origin: 159px 8px; unicode-bidi: normal; "><span style="">Note: sometimes it's the littlest things that matter....</span></span></div></div></div>

Solve

Solution Stats

1106 Solutions
379 Solvers

Last Solution submitted on Mar 02, 2023

Last 200 Solutions

Problem Comments

8 Comments

8 Comments

Show 5 older comments

AMITAVA BISWAS on 28 Feb 2012

this is a great problem iff delivered as audio but not as video...

AMITAVA BISWAS on 28 Feb 2012

Liked it, emphasizes the old advice - examine the exam first, answer the exam later ...

David Young on 29 Feb 2012

But B is not the same as b!

Richard Zapor on 1 May 2012

The default call routine has numbers "2" but the check routine expects "two" to be the function call name.

Jan Orwat on 4 Aug 2013

I'm just curious, cause the description doesn't specify it clearly (and there is no test for this): what the output should be when input has more than two b's?

Anupam Agarwal on 17 Oct 2014

filename cannot start with a number.

Varoujan on 5 Jul 2015

Tricky problem - fools the solver with the function name...

Michael Jarboe on 6 Sep 2018

FUNCTION NAME STARTS WITH A NUMBER! BLAH! CHANGE 2--> two

Solution Comments

Solution 1591032

1 Comment

1 Comment

A C on 24 Jul 2018

great!

Solution 563855

1 Comment

1 Comment

Chellammai C on 23 Jan 2015

"cannot read input file 2_b_or_not_2_b.m " hence it failed to evaluate

Solution 466738

2 Comments

2 Comments

Nishat Savat on 6 Jul 2014

why it displays cannot read input file.

rifat on 6 Jul 2014

change your file name to two_b_or_not_two_b

Solution 453978

2 Comments

2 Comments

goc3 on 12 Jun 2014

I'm getting the error: cannot read input file 2_b_or_not_2_b.m. I assume that this isn't on my end...

Osama on 17 Jul 2014

me too !

Solution 236056

1 Comment

1 Comment

Nicholas Howe on 26 Apr 2013

Sorry to steal the lead with this lame solution! I was trying different things before realizing the trick, and hadn't changed the solution back.

Solution 222343

2 Comments

2 Comments

li jian on 24 Mar 2013

I can not submit my solution,it always says "failed to evaluate". Who can help me

Alfonso Nieto-Castanon on 24 Mar 2013

need to change the function name to two_b_or_not_two_b

Solution 65933

2 Comments

2 Comments

Tholian on 26 Mar 2012

I think there is a problem with the test or tests, since even the default solution fails to evaluate with 'Parse error' indicated.

Drew Weymouth on 4 Apr 2012

I agree. Function names cannot start with numbers, so this problem should be revised.

Problem Recent Solvers379

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 325. 2 b | ~ 2 b

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers379

Suggested Problems

More from this Author39

Problem Tags

Community Treasure Hunt

Problem 325. 2 b | ~ 2 b

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers379

Suggested Problems

More from this Author39

Problem Tags

Community Treasure Hunt

Players