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Temperature Conversion Utility

There are a few problems on Cody regarding temperature conversion (C to K, C to F, F to C), but none include Rankine. Furthermor...

1 year ago

Solved

Calculate the sum of two polynomials

Calculate the sum of two polynomials if they are written in notation with their coefficients. example: a=[3 4 5]; b=[...

1 year ago

Solved

Moving average (variable kernel length)

Find the moving average in a vector. The kernel length is a variable. For example x = 1:10 kernel_length = 2 would r...

1 year ago

Solved

Weighted average

Compute the weighted average Y, of the vector A, given the weight vector W. The weighted average is the sum of the dot produc...

1 year ago

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Number of even divisors of a given number

Given a Number n, return the number of its even divisors without listing them. example: n=14 ; EvenDivisors={2,14} ; y=2 ...

1 year ago

Solved

Number of divisors of a given number

Given a Number n, return the number of his divisors without listing them example: n=14 ; Divisors={1,7,2,14} ; y=4 n=...

1 year ago

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Determine the number of odd integers in a vector

Determine the number of unique odd integers in a vector. Examples: Input x = [2 5 8 3 7 1]; Output y = 4; Inp...

1 year ago

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Symmetry of vector

Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...

1 year ago

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Create an n-by-n null matrix and fill with ones certain positions

The positions will be indicated by a z-by-2 matrix. Each row in this z-by-2 matrix will have the row and column in which a 1 has...

1 year ago

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Let's get back to school, and create multiplication tables

For a given range, create multiplication tables. (start is always < endno) Example start = 17 endno = 19 Then, ...

1 year ago

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Multiplication

Multiply two numbers in a different manner. The numbers are given to you as vectors x and y. Example x = [ 1 2 0 1 ] ...

1 year ago

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Sum the 'edge' values of a matrix

Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...

1 year ago

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Subtract integers and add doubles

Create a function that subtracts a from b if a and b are integers and adds them if they are floats.

1 year ago

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Read a column of numbers and interpolate missing data

Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

1 year ago

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Alphabetize by last name

Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

1 year ago

Solved

Get the area codes from a list of phone numbers

Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-6...

1 year ago

Solved

Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

1 year ago

Solved

Sum the Infinite Series

Given that 0 < x and x < 2*pi where x is in radians, write a function [c,s] = infinite_series(x); that returns with the...

1 year ago

Solved

Find the stride of the longest skip sequence

We define a _skip sequence_ as a regularly-spaced list of integers such as might be generated by MATLAB's <http://www.mathworks....

1 year ago

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Golomb's self-describing sequence (based on Euler 341)

The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G...

1 year ago

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"Look and say" sequence

What's the next number in this sequence? * [0] * [1 0] * [1 1 1 0] * [3 1 1 0] * [1 3 2 1 1 0] This a variant on the w...

1 year ago

Solved

Integer sequence - 2 : Kolakoski sequence

Get the n-th term of <https://oeis.org/A000002 Kolakoski Sequence>.

1 year ago

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Mirror Image matrix across anti-diagonal

Given an input number x, create a mirror image matrix 'Y' across the anti-diagonal. For example, if x=3, Y = [1 2 3; ...

1 year ago

Solved

Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.

For example, if n=2 (maximum value), the output matrix should be [1 1 1 1 1; 1 2 2 2 1; 1 2 1 2 1; 1 2 2 2 1; 1...

1 year ago

Solved

Make a logical diamond using GALLERY function

Inspired from <http://www.mathworks.com/matlabcentral/cody/problems/1078-make-a-diamond Problem 1078. Make a diamond> In thi...

1 year ago

Solved

Joining Ranges

You are given a n-by-2 matrix. Each row represents a numeric range, e.g. x = [0 5; 10 3; 20 15; 16 19; 25 25] contains...

1 year ago

Solved

Construct an index vector from two input vectors in vectorized fashion

Create an index vector defined by two input vectors, one defining the beginnings of one or more index ranges, and the other defi...

1 year ago

Solved

Vector of digits (★★)

Given a positive integer x, construct a vector y with all the digits of x in the order of appearance in x. Thus, if x = 172...

1 year ago

Solved

counting sequence

A counting sequence is formed by "counting" the entries in a given sequence.

1 year ago

Solved

Let's create histogram data by yourself.

We'd like to create histogram data, which first column shows the data, and second column shows the frequency. input = [1, 2, ...

1 year ago