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William


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3,334 total contributions since 2012

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William's Badges

  • Cody5 Hard Master
  • Introduction to MATLAB Master
  • Combinatorics I Master
  • Computational Geometry III Master
  • Word Puzzles Master
  • Strings I Master
  • Card Games Master
  • Project Euler I
  • Divisible by x Master
  • Computational Geometry IV Master
  • Indexing V Master
  • Computational Geometry II Master
  • Draw Letters
  • Matrix Manipulation I Master
  • Magic Numbers II Master

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Solved


Zero
given an integer a, find the smallest possible integer b(b>0) such that their bitwise logical AND is zero. * if a=11(1011) t...

1 day ago

Solved


Subdivide the Segment
Two points, P1 and P2, with integer x-y coordinates are given. These uniquely determine a third point, P0, on the extended line...

3 days ago

Solved


Be happy
check whether the given number is happy in b-base. * A happy number can be defined as a number which will yield 1 when it is ...

4 days ago

Solved


Remove duplicated vertices
First input V_in is a vertices list (X Y Z coordinates) which may contain duplicata (identical rows). Second input T_in is th...

4 days ago

Solved


Restricted Addition v4
This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45264-restricted-addition-v3 Restricted Addition v3> with...

5 days ago

Solved


Roots of quadratic equation
Given a quadratic equation ax^2 + bx + c = 0, write a function to return its roots.

6 days ago

Solved


Restricted Addition v1
Add two numbers without use of common arithmetic operations. Unfortunately, in order to enforce this restriction, other restrict...

7 days ago

Solved


Restricted Addition v3
This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45258-restricted-addition-v2 Restricted Addition v2> with...

7 days ago

Solved


Query every vertices neighbor indices
Input T is a <https://fr.mathworks.com/help/matlab/ref/triangulation.html triangulation>. The purpose of this function is to ...

7 days ago

Solved


Alternate list of elements
Write a function that combines two lists by alternating the elements, e.g. ['a','b','c'], ['1','2','3'] → 'a1b2c3'.

8 days ago

Solved


Query edges list
Input T is a triangulation connectivity indices list (triplet list of indices -positive integers-, each index refering to a vert...

9 days ago

Solved


Restricted Addition v2
This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45252 Restricted Addition v1> with more restrictions. ...

10 days ago

Solved


Find neighbor triangle indices
First input T is a triangulation (triplet list of indices -positive integers-, each index refering to a vertex number in a corre...

10 days ago

Solved


Query a vertex neighbors
First input T is a triangulation connectivity indices list (triplet list of indices -positive integers-, each index refering to ...

10 days ago

Solved


Unique: Speed Enhancement for uint(8,16,32)
This Speed Performance Challenge is to optimize Unique for processing uint8/uint16/uint32 variables. *Input:* A (column vecto...

11 days ago

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Last non-zero digit
Given a number n, find the last non-zero digit of the factorial of that number. You need to take care of the large values of n....

13 days ago

Solved


Find the sequence
Find the nth number of a sequence. Check the test suite to determine the sequence. * hint: it is closely related to familiar ...

13 days ago

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Tribonacci Sequence
Generate the tribonacci sequence upto n

13 days ago

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Pell numbers
Find the nth pell number

13 days ago

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2048 tile game
The popular 2048 game has been implemented here: http://gabrielecirulli.github.io/2048/ Given the board like this: [2...

13 days ago

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Frugal number
check whether n is a frugal number

17 days ago

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Hilbert Scan Algorithm
As Zig-Zag and Horizontal ... we have also a < <Hilbert> <Scan> > as shown in this article <http://link.springer.com/chapter/10....

20 days ago

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Aquiles y la tortuga
Contaba Zenón en su famosa paradoja que un día Aquiles, el guerrero griego más veloz de la Hélade, se enfrentó a una pequeña tor...

20 days ago

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Tell your secret
A secret can be told only to 2 persons in 5 minutes. Now these 2 more persons can spread the secret to 4 other people. this way ...

20 days ago

Solved


Count digits
Count total number of digits from 1 to n. * n=13 * output=17 since from [1-9] total 9 digits.[10-13] total 4*2=8 digits.

21 days ago

Solved


Possible Opponents Matrix for single-elimination tournament
It's tournament time! Given a single-elimination tournament with 2^N competitors, compute the 2^N by 2^N matrix M such that M...

22 days ago

Solved


String count
given a string 'str', count the number of the followings - * letters * digits * white space * capital letters * smal...

23 days ago

Solved


Checkmate-02
This is an extension of the problem <https://www.mathworks.com/matlabcentral/cody/problems/45238-checkmate> If the king is in...

23 days ago

Solved


How many Christmas presents under the tree?
For many families at Christmas, each family member gives 1 present to every other family member. The main exception is that chil...

25 days ago

Solved


Binary Array to Hex Representation
Given a binary array of bytes (lsb to msb), convert it into a hexadecimal representation (msb to lsb). For example: Input: [1 ...

25 days ago

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