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Count ones
Write a program to count number of ones (1s) in an integer variable input. For example: Input x=2200112231 output y=3 I...

8 years ago

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07 - Common functions and indexing 2
Define _eMat_: <<http://samle.dk/STTBDP/Assignment1_3e.png>> Calculate eMean as the mean across the rows of _eMat_. The an...

8 years ago

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Counting down
Create a vector that counts from 450 to 200 in increments of 10.

8 years ago

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07 - Common functions and indexing 5
Create the vector _lin_: <<http://samle.dk/STTBDP/Assignment1_7e.png>> (the integers from 1 to 20) Make every other val...

8 years ago

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Find out missing number from a vector of 9 elements
You are given a vector of size 9, x = [x1 x2 x3 x4 x5 x6 x7 x8 x9] Elements of x may be randomly selected without repeati...

8 years ago

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Back to basics 26 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of strings of all MATLAB keywords.

8 years ago

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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 ...

8 years ago

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High school cafeteria
Given an input vector of positive integers, return a row vector with the primes first (in increasing order) and the composites n...

8 years ago

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Mode
Find the mode of the vector Assumption: no vector is bimodal Example 1: input=[1 2 3 4 4]; output=4 Example 2: input=[7...

8 years ago

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Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x = 123045; x_vec = [1 2 3 0 4 5]; I happened upon a trick ...

8 years ago

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Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

8 years ago

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Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

8 years ago

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06 - Matrix Equations 3
Define the matrices _aMat_, _bMat_, and _cMat_: <<http://samle.dk/STTBDP/Assignment1_3a.png>> ( _aMat_ = 9x9 matrix full o...

8 years ago

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Check if equal
Return true if all the elements of an nD array are equal, false otherwise.

8 years ago

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Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

8 years ago

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Area of a circle
Given the radius x, y would be the area of a circle. Pi = 3.1416

8 years ago

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Vectors counting by 2
Create a vector numbers from 7 to 15 in increments of 2

8 years ago

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Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

8 years ago

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Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

8 years ago

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Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

8 years ago

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Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

8 years ago

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Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

8 years ago

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Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

8 years ago

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Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

8 years ago

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find the surface area of a cube
given cube side length x, find the surface area of the cube, set it equal to y

8 years ago

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find the maximum element of the matrix
for e.g x = [1 2; 3 4] y = 4

8 years ago

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vectorization in N
For a given integer n (n>1), compute the sum f (i) (1 <= i <= n) where f (i) = 1 if n is odd and 2 otherwise.

8 years ago

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Evaluating a polynomial
Given the following polynomial and the value for x, determine y. y = 3x^5 – x^3 + 8x – 3 Example x = 1 y = 3 - 1 +...

8 years ago

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Matlab Basics - Rounding III
Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

8 years ago

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07 - Common functions and indexing 6
Create a variable _m_ as a magic square with the size 6 x 6 Magic squares are defined as square matrices, where the sum of a...

8 years ago