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Easy Sequences 5: Project Euler Problem 1 - Again!

We are all familiar with Project Euler Problem 1. This time let's try it on bigger multiples and larger range. Find the sum of ...

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Project Euler: Problem 1, Multiples of 3 and 5

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

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Easy Sequences 4: Eliminate the Days of Confusion

If a date is written in purely numeric format some dates can be confusing, if we don't know the date format used. For example, "...

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Easy Sequences 3: Prime 44-number Squares

The positive integers 62 and 238 are related. Their squares (3844 and 56,644) both end in '44'. In fact, 62 and 238 are the 3rd ...

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Easy Sequences 2: Trigonometric function with integral input and output

The function 'F', defined as: , will always return an integer if the input is a natural number (in radian...

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choose the even number

find all even number in vector x Example: x = [1 2 3 4 5 6 7 8 9 10] y = [2 4 6 8 10]

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Cell Operator *

Please implement operator * for cell: >> {2,3} * 2 ans = 1×4 cell array [2] [3] [2] [3] >> {2,3} * [2 3]...

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Apply Function to Each Field of a Structure Array: Part 2

The builtin <http://www.mathworks.com/help/matlab/ref/structfun.html?=structfun structfun> applies a function handle to each fie...

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Draw the flag of United Kingdom from 0 and 1.

Draw the flag of United Kingdom using 0 and 1. Exam: output n = 5 input y = [ 0 0 1 0 0 0 0 ...

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Easy Sequences 1: Find the index of an element

The nth element of a series A is defined by: . Obviously, the first element A(1) = 1. Given the nth element 'A(n)', find the val...

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Draw matrix 'Swiss flag'( Euro 2020)

Draw a x-by-x matrix 'Swiss flag' using '0' and '1'.(x is odd and bigger than 4) Example x=5 ...

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Draw a x-by-x matrix British flag (Euro 2020)

Draw a x-by-x matrix 'British flag' using '0' and '1'.(x is odd and bigger than 4) x = 5 answer = [0 0 1 0 0 ...

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Modify subscripts - easier

MATLAB supports object-oriented programming. Let's take an advantage of it in cody. This problem focus on modifying subscript...

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Criss-Cross Verification: NHL

This Challenge is to verify a Criss-Cross matrix has no invalid words,contains all of the word set, and all are simply connected...

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It's Happy! It's Fun! It's Happy Fun Hyperball!

Yes, it's Happy Fun Hyperball! The CODY sensation that's sweeping MATLAB nation! All you need to do to get your free Happy Fun H...

ongeveer 2 maanden ago

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3n + 1 Problem (a.k.a The Collatz Conjecture)

The 3n + 1 problem (a.k.a The Collatz Conjecture) Consider the following algorithm to generate a sequence of numbers. Start wit...

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Get to a number faster.

If you start with $1 and, with each move, you can either double your money or add another $1, what is the smallest number of mov...

ongeveer 2 maanden ago

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Solve Sudoku puzzle step by

Sudoku is a famous puzzle. <https://en.wikipedia.org/wiki/Sudoku> Give a standard sudoku by a matrix (9*9), You need give a ...

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Find the nth consonant number.

Everyone heard about the nth prime number. Let's try to find out the nth consonant. For example , 1 is the first consonant, 10 i...

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Create the flag of Ramumbia

The little known nation of Ramumbia has a very simple flag. It is made up of vertical stripes, Red, Green, Blue, that are equall...

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Loading/Expanding a ZIP file from File Exchange

This challenge is to load a ZIP file from Mathworks File Exchange and UNZIP the contents. *Input:* url_link of ZIP'd file ...

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Dilate a 3d object sampled on a regular grid

3d objects can be described by a set of points on a regular grid in Euclidean space. Given the n x 3 matrix m defining some numb...

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ICFP2021 Hole-In-Wall: Solve Score=0, where number of Figure Vertices = Hole Vertices + 1

The ICFP held its annual 3-day contest in July 2021 with Hole-In-Wall. Contest Specification. The contest folds the figure in R...

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Sort Except Zeros

Sort the numbers in a vector. But the position of zeros should not be changed. Example: sort_except_zeros( [5 3 0 0 2 4] ) == [...

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Double Fibonacci

double_fibonacci takes two integers, each greater than one, as input arguments (it does not have to check the format of the inpu...

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Cancel Middle

Write a function called cancel_middle that takes A, an n-by-m matrix, as an input where both n and m are odd numbers an...

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Draw 'S'

draw S using nxn matrix, where n is odd and greater than 4 S = [1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 0 0 0 0 1 ...

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ICFP2021 Hole-In-Wall: Figure Validation with Segment Crossing and Segment on Wall Checks

The ICFP held its annual 3-day contest in July 2021 with Hole-In-Wall. Contest Specification. The contest folds the figure in R...

2 maanden ago

Solved

ICFP2021 Hole-In-Wall: Solve Score=0, where number Hole Vertices = Figure Vertices

The ICFP held its annual 3-day contest in July 2021 with Hole-In-Wall. Contest Specification. The contest folds the figure in R...

2 maanden ago