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# Doanh Pham

214 total contributions since 2019

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Draw a 'Z'.
Given _n_ as input, generate a n-by-n matrix like 'Z' by _0_ and _1_ . Example: n=5 ans= [1 1 1 1 1 0 0 0 1 ...

2 Tage ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

3 Tage ago

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Is the Point in a Triangle?
Check whether a point or multiple points is/are in a triangle with three corners Points = [x, y]; Triangle = [x1, y1; x...

3 Tage ago

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Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

3 Tage ago

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Inner product of two vectors
Find the inner product of two vectors.

4 Tage ago

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Get the length of a given vector
Given a vector x, the output y should equal the length of x.

4 Tage ago

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Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

10 Tage ago

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Triangle Numbers Below N
This is an offshoot of <http://www.mathworks.com/matlabcentral/cody/problems/5-triangle-numbers Cody Problem 5: Triangle Numbers...

11 Tage ago

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Element by element multiplication of two vectors
Given two input vectors, return the element-by-element product. Example A = [1 2 3] B = [7 3 1] The answer should be...

11 Tage ago

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Roots
Find out the roots of a given polynomial equation.Given are the coefficients of the equation.

11 Tage ago

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Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

11 Tage ago

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Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.

11 Tage ago

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pressure to dB?
given x ratio of pressure, find corresponding y dB

11 Tage ago

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Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

11 Tage ago

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Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

11 Tage ago

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square root
Find the square root (y) of an input (x).

11 Tage ago

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find the roots of a quadratic equation
for e.g x = [ 2 -1 -3] y = [1.5 -1]

11 Tage ago

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Vector Multiplication
Vector Multiplication of three matrix as shown in test cases.

11 Tage ago

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Love triangles
Given a vector of lengths [a b c], determines whether a triangle with non-zero area (in two-dimensional Euclidean space, smarty!...

15 Tage ago

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Reverse a matrix
Its simple. You have to reverse a given matrix.

15 Tage ago

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Matlab Basics II - Free Fall
An object freely falling from rest under gravity covers a distance x given by: x = 1/2 gt^2 write a function that calculat...

15 Tage ago

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Min of a Matrix
Return the minimum value in the given matrix.

15 Tage ago

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02 - Vector Variables 3
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_2c.png>> (all the numbers from 5 to -5 in increments of ...

15 Tage ago

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Rounding
Round 10.67 and make 'y' equal to that number.

15 Tage ago

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Beginner's Problem - Squaring
Try out this test problem first. Given the variable x as your input, square it by two and put the result in y. Examples: ...

15 Tage ago

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Multiply by 3
Given the variable x as your input, multiply it by three and put the result in y.

15 Tage ago

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Divide by 4
Given the variable x as your input, divide it by 4 and put the result in y.

15 Tage ago

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15 Tage ago

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Make one big string out of two smaller strings
If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

15 Tage ago

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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

15 Tage ago