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Capitalized string operations
Convert the input sentence to upper case and replace all vowels with an underscore ('_')

7 years ago

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Calculating the total earnings of a factory
The row vector, prods contains the number of various products manufactured per hour. The second row vector, prices holds values ...

7 years ago

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Repetition of matrices
*A is a bold matrix: [1 2 3; 4 5 6;7 8 9]* Given an integer 'n' , a matrix B exists such that has n copies of A in the row an...

7 years ago

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'Determine if array of numbers is odd'
Return true if the input single number is odd. If the input is a vector, it will return a vector or array of logical values indi...

7 years ago

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Calculating Ring Area
In two-dimensional space, a ring can be constructed by using two concentric circles. Determine the area of a ring which has r1 ...

7 years ago

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Calculate the CIRCUMFERENCE of circle.
Given the radius is 2, the circumference will be 12.5663.

7 years ago

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Calculate the volume of the cube.
Example n = 3; a = volume(n); a = 27

7 years ago

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Adding Numbers
Add the input numbers to the original.

7 years ago

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Determine the number of correct and incorrect answers
In a Multiple Choice Question Test, you are to sort out answer from 4 samples, one of them is correct answer. There are 50 quest...

7 years ago

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Find the repeating elements and repetitions of a row vector.
So let's say that x is a vector, for example, x = [4, 4, 5, 5, 5, 6, 7, 7，8, 8, 8, 8] Now we want to get the following two ve...

7 years ago

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Funny problems
Generate the following vector： if n=1 then q=1; elseif n=2 then q=[2 2 1]; elseif n=3 then q=[3 3 3 2 2 1]; ... end

7 years ago

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Remove white spaces at the end of the input string
Remove all trailing white spaces at the end of the input strings

7 years ago

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Sum of unique multiples of 3 and 5
If we list all the natural numbers up to 15 that are multiples of 3 or 5, we get 3, 5, 6, 9, 10, 12 and 15. The sum of these mul...

7 years ago

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function to compute root mean square of first nn positive odd integers
Write a function called odd_rms that returns orms, which is the square root of the mean of the squares of the first nn positive ...

7 years ago

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Check if there are white spaces in the input string
If there are white spaces in the input string, output=1 else 0

7 years ago

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count upper and lower case characters
In a given input string, count and return the number of upper and lower case characters as u and l respectively. For example:...

7 years ago

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Check for keywords
If the entered string is a MATLAB keyword, return true else false

7 years ago

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Dial Up
Each number on telephone keypads, except 0 and 1, corresponds to a set of uppercase letters as shown in this list: 2 ABC, 3 DEF...

7 years ago

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Find NaNs in the matrix
Return 1s wherever there is a NaN in the input matrix

7 years ago

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convert the number to binary format & count digits
Convert the given number to the corresponding binary format and count the number of digits in that binary number

7 years ago

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Basic matlab numeric and string manipulations
If entered input (n) is _numeric_ , compute its *log to the base (n+2)* , if it is a _lower case_ alphabet, *convert it to i...

7 years ago

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Determine point is located in a circle or not
Using input [x] and [y], determine the points (x,y) is located inside of circle (x^2+y^2=1) if point is located in circle,...

7 years ago

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Check if two matrices are permutations of each other
Your function should return true for the elements of one matrix is the permutation of the other matrix: x = [1 2 3; 4 5 6; ...

7 years ago

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Check if a matrix is a palindrome in all directions
Check if a matrix is a palindrome both vertically and horizontally. You function will return *true* for |[1,2,1]| or |[2,7,2;...

7 years ago

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Product of all elements in an array
Compute the product of all elements in an array.

7 years ago

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Reverse digits of a number
Reverse digits of a number. For example, return *321* for the input *123* . The left-hand zeros can be discarded. For exam...

7 years ago

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Find max prime number
Given integer number n. Find the max prime number (mpn) that smaller than or equal to n. Example: n = 10 --> mpn = 7

7 years ago

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Convert from integer to binary
if true % decimalToBinaryVector(x) end

7 years ago

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Odd times even numbers in a matrix
First count the number of odd numbers in x, then the number of even. Return their product. example: x = [1 2] One odd ...

7 years ago

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Second smallest number
What is the second smallest number in x? example: x = [1 2 3 4 5 6 7 8 9] y = 2

7 years ago