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is the number happy?
test is a given integer number is Happy of not? answer 1 if yes or 0 is no

5 years ago

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Count photos
Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total nu...

5 years ago

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Sum my indices
Given inputs M and N (in that order), output an MxN matrix whose entries are equal to the sum of their indices. Example input...

5 years ago

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size

5 years ago

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Distance of the centroids of the balls
Given *n* balls of radius *r* and the vector *p (nx3)* with all position *(x,y,z)* of the balls, return the symmetric matrix *A ...

5 years ago

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Inverse of Hilbert matrix
Given a non-negative integer x, return the element-wise power of 2 of the inverse of Hilbert matrix.

5 years ago

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Fermat's Last Theorem - Fermat's conjecture
Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive integers a...

5 years ago

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Center of mass
Given a matrix M(m,n), where m is the number of vertices of the geometrical element and n is 2 or 3 (2D-plane figure or 3D-solid...

5 years ago

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arrangement of symbols
There are n different symbols in which m symbols are identical (m<n). How many different arrangement can we make with these symb...

5 years ago

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Find number of days
The input is two date in string format (dd-mm-yyyy) find out the number of days between these two dates. Example: input: ...

5 years ago

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Given a number find two variables
If the input is *x*, find *a* and *b* from the following equation: *x = a*2^b*. Hint: *b* is an integer while *x* and *a* ar...

5 years ago

Solved

PRIME GENERATOR

5 years ago

Solved

Average of corner elements of a matrix (★★)
(copy of prob 2235) Calculate the average of corner elements of a matrix. e.g. x=[1 2 3; 4 5 6; 7 8 9;] avg = (1+3+7+9)...

5 years ago

Solved

Vector raised to a power, element-wise (★)
Given a vector A and a number x, raise each element of the vector to the power of x. Thus, if A = [2 5 7 1] and x = 0.5, then ...

5 years ago

Solved

Function 1 (★)
Compute the value of <<https://i.imgur.com/AxKWLmE.gif>> for any given positive x.

5 years ago

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Column Removal (★★★)
(copy of prob 7) Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2...

5 years ago

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Approximate functions 2 (★★★★)

5 years ago

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Make a checkerboard matrix (★★★★★)
(copy of Prob. 4) Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1...

5 years ago

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Sum of terms in a series 2 (★★★)

5 years ago

Solved

Sum of all the divisors of n

5 years ago

Solved

Maximum running product for a string of numbers
Given a string s representing a list of numbers, find the five consecutive numbers that multiply to form the largest number. Spe...

5 years ago

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Skip by a multiple
Given an integer create an array of its multiples. Array must have a length of 15

5 years ago

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Areas
Given certain dimensions determine the area of that shape. If given only one value assume its the radius. Use round(x) to round ...

5 years ago

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Perimeters/Circumference
Given an array. Determine whether the perimeter is of a circle, triangle or square. Then calculate the perimeter.

5 years ago

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calculate the tangent of angle in radians
Calculate the tangent of angle in degrees

5 years ago

Solved

Create a square matrix of zeros of even order
Create a square matrix of zeros of even order

5 years ago

Solved

Determine if a row vector has NaN
Determine if a row vector x has NaN

5 years ago

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Speed of car
Calculate the Speed of car given its Distance travelled and time taken in x and y respectively

5 years ago

Solved

Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...

5 years ago

Solved

Half the length of the vector

5 years ago