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Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

9 years ago

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Dimensions of a rectangle
The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

9 years ago

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sum of ASCII
Given a string x, return the sum of all ASCII numbers of all characters. for example, if x='lala' ('l'-> 108, 'a'->97) then y...

9 years ago

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How to Concatenate two strings?
How to Concatenate two strings?

9 years ago

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Sort rows of a matrix
Sort rows of matrix A in an ascending order according to the last column Example input: A = [1 2 3;7 8 9;4 5 6]; Exam...

9 years ago

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Find index of a string in a cell array
Write a function that finds the index at which the cell array of strings C contains the exact string S. So if C = {'twe...

9 years ago

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All odd - all even
All odd numbers in x are added, while all even numers are subtracted from this. example: x = [1 2 3 4 5]; y = +(1+3+5)-...

9 years ago

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find number of buses for given to and from lines
find number of buses for given to and from lines

9 years ago

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how to find size of a matrix?
how to find size of a matrix?

9 years ago

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Remove multiples of N
in the vector x remove all multiples of N. x = [1 2 3 4 5 6]; N = 2; Then y = [1 3 5];

9 years ago

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Find cosine between two given vectors u and v.
Find cosine between two given vectors u and v. Example u = [5 2 0 5 3 0]; v = [3 2 5 1 ...

9 years ago

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how to convert given text into all upper case letters?
how to convert given text into all upper case letters?

9 years ago

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Count the numbers
In a array x, count the number of times the number n appears in x. for example: x = [1 2 3 4 3 2 1 2] and n = 2 the answer sh...

9 years ago

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Find Euclidean norm of given vector u.
Find Euclidean norm of given vector u. https://en.wikipedia.org/wiki/Euclidean_distance Example x=[1 1] result=sqrt(1^2+1^2...

9 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...

9 years ago

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Find the sides of an isosceles triangle when given its area and height to its base.
Find the sides of an isosceles triangle when given its area and height to its base. Example S=12, h=4, result will be [5 5 6]...

9 years ago

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Calculate cosine without cos(x)
Solve cos(x). The use of the function cos() and sin() is not allowed.

9 years ago

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Counting votes
x is a vector of votes, e.g. x=[1 2 3 2 2 1 3 2 1 2 2 2 2], who is the winner? 1,2,3?

9 years ago

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Create square matrix with given conditions.
Create square matrix which should be like given matrix M. M = [ n^2 n*(n-1) n*(n-2) ... n*2 n; n*(n-1)...

9 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

9 years ago

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Number of elements in matrix
Calculate the # of elements for given matrix

9 years ago

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How do you make seven even?
Take away the s.

9 years ago

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Convert array of decimal numbers into hexadecimal numbers array.
Convert array of decimal numbers into hexadecimal numbers array. Example x =[ 32 33 34 35 36 37 38 ...

9 years ago

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Convert array of decimal numbers into binary numbers array.
Convert array of decimal numbers into binary numbers array. Example x = [1 2 3 4 5 6 7 8 ]; re...

9 years ago

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Count given word x in text.
Count how many times given word x repeats in text.

9 years ago

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i forgot to use capital I
When referring to yourself you should write "I" (capital) and not "i". So correct the input string x, but be aware that other u...

9 years ago

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How find sum of elements of each column in matrix?
How find sum of elements of each column in matrix?

9 years ago

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How to find average of each column ?
How to find average of each column for a given matrix?

9 years ago

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product of given two numbers?
product of given two numbers?

9 years ago

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How find minimum element of a column in matrix?
How find minimum element of a column in matrix?

9 years ago