# Angelo Twagirumukiza

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**Content Feed**

Solved

Balanced number

Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

5 maanden ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

5 maanden ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

5 maanden ago

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Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

5 maanden ago

Solved

Find the numeric mean of the prime numbers in a matrix.

There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

5 maanden ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

5 maanden ago

Solved

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...

7 maanden ago

Solved

Mo money, mo math #2! (★★★)

(adapted from Prob 9 Cody team) You have a matrix for which each row is a person and the columns represent the number of quar...

7 maanden ago

Solved

Approximate functions 1 (★★★)

Compute the following sum for any given x and positive integer n. <<https://i.imgur.com/eUwXdSE.gif>> <> Here m! denote...

7 maanden ago

Solved

Sum of terms in a series 1 (★★★)

Given x and n, compute the following sum: |x|+|x|^(1/2)+|x|^(1/3)+|x|^(1/4)+|x|^(1/5) ... + |x|^(1/n) where ||x|| indica...

7 maanden ago

Solved

Prime number check (★★)

One way to see if a number x is prime is to compute the remainders obtained when dividing x by all integers from 2 to √(x). If x...

7 maanden ago

Solved

Variance computation (★)

Given a vector x with several values, compute the variance, whose formula is given by: <<https://i.imgur.com/Wg95KBE.gif>> ...

7 maanden ago

Solved

Median computation (★)

Given a vector of values, compute the median. The median is defined as the middle value in a set of *sorted* data. Thus, if ...

7 maanden ago

Solved

Function 1 (★)

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

7 maanden ago

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Create times-tables (★★★)

(copy of prob 33) At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 ti...

7 maanden ago

Solved

Mo money, mo math 1! (★★★)

(adapted from Prob 9 Cody team) You have a vector where the elements represent the number of $20 bills, $10 bills, $5 bills, ...

7 maanden ago

Solved

Reindex a vector (★★)

(copy of Prob. 676) You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX h...

7 maanden 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)...

7 maanden ago

Solved

Doubling elements in a vector (★★)

(copy of prob. 1024) Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] t...

7 maanden ago

Solved

Swap the first and last columns (★★)

(copy of Prob 19) Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becom...

7 maanden ago

Solved

Select every other element of a vector (★★)

(copy of prob 6) Write a function which returns every other element of the vector passed in. That is, it returns the all odd-...

7 maanden ago

Solved

Create a vector with n repeated values of a number x (★★)

If x=3 and n=7 then the vector y would be y=[3 3 3 3 3 3 3]

7 maanden ago

Solved

Sum of elements in a vector (★)

(copy of Prob. 3) Find the sum of all the numbers of the input vector x. Input x = [1 2 3 5] Output y is 11 <> ...

7 maanden ago

Solved

Generate n equally spaced "intervals" between -x and x (★)

Given n and x, return a list of numbers (in ascending order) that divides the interval [-x x] into n equal-length intervals. ...

7 maanden 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 ...

7 maanden ago

Solved

Element-wise vector product (★)

Given two vectors x and y, compute their element-wise product z. Thus, if x = [1 3 5] and y = [0.5 -1 2], then z = [1*0.5...

7 maanden ago

Solved

PEMDAS test (★★)

Create the function that will return the following expression for x and y. <<https://i.ibb.co/RHWyzrv/Code-Cogs-Eqn-1.gif>> ...

7 maanden ago

Solved

Create logarithmically spaced values (★)

Given three numbers a,b,n with b>a, create a vector y with n logarithmic spaced values between 10^a and 10^b. Thus, if a = -2, ...

7 maanden ago