Community Profile

photo

Tim


Last seen: Today
1,373 total contributions since 2012

Contact

Tim's Badges

View all

Contributions in
View by

Solved


Calculate triangle area
Imagine that you want to calculate the areas of some triangles given in matrix form. First the coordinates of the vertices of th...

1 day ago

Solved


Find the centroid of triangle
Imagine that you want to calculate the *centroid* of some _triangles_ given in matrix form. First the coordinates of the vertice...

2 days ago

Solved


Fangs of pseudo-vampire number
given a number, find all the fangs of that number. A pseudo-vampire number can have multiple of fangs. The output should be a...

2 days ago

Solved


Pseudo-vampire number
refer to <https://en.wikipedia.org/wiki/Vampire_number> Given a number x, determine whether it is a pseudo-vampire number. ...

2 days ago

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...

7 days ago

Solved


Projector Matrix
Write a function to determine whether or not the matrix is a projector. Projector matrices are defined as P^2 = P.

14 days ago

Solved


Nilpotent matrix
Check if matrix A is <http://mathworks.com/ nilpotent>.

14 days ago

Solved


Outer product of multiple vectors
In tensor algebra, it is often useful to define a tensor as a product of lower order tensors. Similarly, a multidimensional arra...

14 days ago

Solved


Combined Ages 4 - Non-symmetric with multiples, n ≥ 3
This problem is slightly more difficult than <http://www.mathworks.com/matlabcentral/cody/problems/42383-combined-ages-3-non-sym...

14 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'.

15 days ago

Solved


Frugal number
check whether n is a frugal number * a frugal number is a natural number in a given number base that has more digits than the...

15 days ago

Solved


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....

16 days ago

Solved


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

16 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 ...

16 days ago

Solved


Pell numbers
Find the nth pell number <https://en.wikipedia.org/wiki/Pell_number>

16 days ago

Solved


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

17 days ago

Solved


Tribonacci Sequence
Generate the tribonacci sequence upto n

17 days ago

Solved


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

24 days ago

Solved


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 ...

24 days ago

Solved


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...

25 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.

27 days ago

Solved


Linear system of equations
Solve the system of equations in three variables.

1 month ago

Solved


String to Binary Representation
Given a string, convert it using UTF-8 into a binary array where each character or byte is arraigned low to high. For example: ...

1 month 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 ...

1 month 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...

1 month ago

Solved


Check if number is a square number
Test if integer i is a square number. Return logical true if it is.

1 month ago

Solved


Calculate Euler's phi function
Compute the Euler's phi function of a large integer. For more information about this topic please visit: <https://en.wikiped...

1 month ago

Solved


An Ohm's Law Calculator
*BACKGROUND / MOTIVATION:* Many important observations in math and science can be described by short, but powerful, equations...

1 month ago

Solved


Generate Golomb's sequence
Generate Golomb's sequence up to the given number. If n=4, then seq = [1, 2, 2, 3, 3, 4, 4, 4] If n=6, then s...

1 month ago

Solved


generate the matrix
given 3 inputs e.g [2,3,4] -- generate a matrix like below -- [2 2 0 0 0 0 0 0 0; 2 2 0 0 0 0 0 0 0; 0 0 3 3 3 0 0 0 0; 0 0...

1 month ago

Load more