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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.

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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

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Add the even numbers
Add only the even numbers of x example: x = [1 2 3 4 5] the positive numbers are: 2 4, so their sum is 6

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Find the sum of the negative elements under the main diagonal.
Example Input A=[1 2; -3 0] Output -3

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Find the distance traveled by a car given velocity and time.
A car is traveling at a constant velocity for a specific amount of time. The function should use the two inputs, velocity and ti...

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Make an identity matrix whose diagonal elements are 1:n
For a given input n, make an n by n identity matrix that contains the elements 1:n along its diagonal. For example, if input=5: ...

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Calculate the answer to life the universe and everything
<https://en.wikipedia.org/wiki/42_(number)>

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MPS to MPH
Given the speed in miles per second, find the speed in miles per hour.

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Shift elements of vector left
Shift elements of vector to the left. For ex. : Input_vec = [1 2 3 4 5] Output_vec = [2 3 4 5 1]

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Display negative numbers
Given array,x, display all the negative numbers and display output as y. Example x=[1 -2 3 -4] , output is y=[-2 -4].

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row removal
Consider a matrix and remove the first row of the matrix.

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Increment up an input vector
Increment up an input vector by adding the indices to the vector values. For example, if an input vector is [3, 2, 6, 1, 6], the...

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sum all digits
input = 123456789, output = 1+2+3+4+5+6+7+8+9 = 45

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Separate even from odd numbers in a vector - without loops
*Without using loops*, rearrange a vector of integers such that the odd numbers appear at the beginning, and even numbers at the...

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Increment a number, given its digits
Take as input an array of digits (e.g. x = [1 2 3]) and output an array of digits that is that number "incremented" properly, (i...

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Split a given string from the first instance of a given character
A simple operation to split a given string into two substrings at the point where the desired character is first found. e.g. ...

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Now 20% off!
Furloughs are hitting government workers this year. To commemorate getting one unpaid day off each week until the end of Septem...

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Average of odd values
Find the average of odd values in given a matrix. e.g x=[ 4 11 8 ; 9 2 7 ] y =( 11 + 9+ 7 ) / 3

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Select primes from the matrix.
Select primes from the matrix.

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Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

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Divisible by 4
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

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Saving MATLAB session to a file
How to save MATLAB session to a file?

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multiply an array by its position number
You have given an array. Multiply an array by its position number

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Combine the first and last names
MATLAB R2016 provides a rich set of functions to work with string arrays. In this problem, you will be given two string arrays o...

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Is the paranthesis sequence balanced ?
Quantum mechanics and computer science are interested in <http://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation bra-kets>. Today...

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Test if a Number is a Palindrome without using any String Operations
*Description* Given an integer _X_, determine if it is a palindrome number. That is, _X_ is equal to the _X_ with the digits ...

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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: ...

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Find the longest match inside two strings
Given two strings, find the longest string which is contained within both strings. e.g. the longest string that is contained ...

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Convert a vector into numbers
Suppose a vector x = [ 1 2 4 7] is given. You have to convert this vector into string number y = '1247'. Examples x = [ 1...

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Related Vectors
I have two vectors A & B. If the values in vector A is zero then the corresponding value in vector B should be zero. Example:...

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