Solved

Divide elements by sum of elements
In this problem, I ask you to write a function which will divide the elements of each column by the sum of the elements of the s...

2 years ago

Solved

Another colon problem
This is simple problem based on problems 555, 801, 1118, etc. Create an index vector from two input vectors. Example: ...

2 years ago

Solved

Create a function handle that reverses the input arguments of another function handle
Given a function that takes two input arguments and returns one output, create another function handle that performs the same op...

2 years ago

Solved

Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

2 years ago

Solved

Decimal Comparison
*Background* A utility of particular interest to Cody and other MATLAB ventures is comparing the equality of two numbers. In ...

2 years ago

Solved

Implement a bubble sort technique and output the number of swaps required
A bubble sort technique compares adjacent items and swaps them if they are in the wrong order. This is done recursively until al...

2 years ago

Solved

Finding peaks
Find the peak values in the signal. The peak value is defined as the local maxima. For example, x= [1 12 3 2 7 0 3 1 19 7]; ...

2 years ago

Solved

N-th Odious
Given index n return n-th <https://oeis.org/A000069 odious number>.

2 years ago

Solved

Evil Number
Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

2 years ago

Solved

Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

2 years ago

Solved

Define the operators of function_handles
Suppose f and g are function_handles, try to define f+g,f-g,f*g and f/g. e.g. if f = @(x)x and g = @(x)x+1 ...

2 years ago

Solved

Two-output anonymous function?
Return a function handle that when applied to an input, it produces two outputs: the first is the same as the input, and the sec...

2 years ago

Solved

Apply a function array to an array of numbers
It is required to apply a cell array of functions to a numerical array, where the functions accept only scalar inputs. Exampl...

2 years ago

Solved

Gauss Eliminate 2-by-2 example
Use forward elimination to make the coefficient matrix, A, an upper triangular matrix, and then solve using back substitution, f...

2 years ago

Solved

First use of arrayfun() and anonymous function @(x)
Create an anonymous function using @(x) for a parabola equation for the given coefficients stored in s with s(1)x2 + s(2)x + s(...

2 years ago

Solved

generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

2 years ago

Solved

Find the sum of the largest two elements in a vector
With this one, you have to find the two largest elements in a vector and output the sum of those numbers.

2 years ago

Solved

interesting center of magic matrix
output the centre of magic matrix of n input=7; output=25

2 years ago

Solved

Change matrix to vector2
From x = 4 3 5 1 5 1 To y = 4 3 5 1 ...

2 years ago

Solved

Basics - not so easy division
Please make a function whcih divides x/y, but pay attention for some exceptions with NaN,0,Inf. Sometimes return "ERROR" instead...

2 years ago

Solved

Average speed for the entire trip
The input is two speeds (for the trip and return trip) and output is average speed. Assume units are consistent, say miles per h...

2 years ago

Solved

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

2 years ago

Solved

Extract leading non-zero digit
<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

2 years ago

Solved

Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

2 years ago

Solved

Trimming Spaces
Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

2 years ago

Solved

Determine digits of the Copeland-Erdos constant
<https://www.mathworks.com/matlabcentral/cody/problems/1477-champernowne-constant/solutions/new Cody Problem 1477> asks us to de...

3 years ago

Solved

Cricket - Is It LBW?
LBW has an unfair reputation as complicated. But if you've watched a third umpire referral, you'll know that it's just a logical...

3 years ago

Solved

Unique values without using UNIQUE function
You must return unique values in a vector in *stable* mode without using the unique function. About stable order flag: ...

3 years ago

Solved

Insert zeros into vector
Insert zeros after each elements in the vector. Number of zeros is specified as the input parameter. For example: x = [1 ...

3 years ago

Solved

Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

3 years ago