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Calculate FFT
Calculate the fft manually, without using matlab's builtin function. No cheating allowed.

24일 전

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Return the sequence element III
This problem is related to <http://www.mathworks.com/matlabcentral/cody/problems/42832-segmented-number-sequence Problem 42832>....

24일 전

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Polygon division
Given the number of vertices (or sides), n, of a planar convex polygon, return the number of ways, w, in which you can divide th...

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generate a matrix of Legendre polynomials
input = x - the degree of the polynomial output = matrix of Legendre polynomials

25일 전

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The length of the equal sides of an isoceles triangle is 'a'.For all the possible (integer) values of the remaining side,find the associated angles between the two equal sides.
the remaining side may have many possible values.only assume integer ones for simplicity.

26일 전

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4 Digit Sequence Repetitions
Given a 4 digit integer, a sequence can be created such that the next digit in the sequence is the ones digit from the sum of th...

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Kurosu checker
The game of Kurosu is simple. A square grid contains cells that can be filled with either a 'X' or an 'O', similarly to a tic-ta...

26일 전

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Top layer of a 3D pyramid
create a 3D pyramid(x,y,z) of ones(1) and zeros(0)...where pyramid part is denoted by one....nd find the top layer(x,y) of the p...

26일 전

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Check Digit - 01
The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. It used ...

27일 전

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Where do the maximum number belongs within a 3-D matrix?
Suppose, you are given two variables a and b as inputs in 2-D format. Find out, where do the maximum number belongs (as output c...

27일 전

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Fibonacci Word
F1='0' F2='1' F3 is the catenation of the previous two. So, F3 = cat(F2,F1)='10'. similarly, F4 = cat(F3,F2)= '101' ...

27일 전

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Do they touch?
The center and radius of two circles are given. Determine whether they touch.

27일 전

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Decoder Ring
You are given a matrix of numbers, your objective is to use the decoder ring to find the hidden message. ex. encoded_messa...

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Project Euler: Problem 14, Longest Collatz sequence
The following iterative sequence is defined for the set of positive integers: n → n/2 (n is even) n → 3n + 1 (n is odd) U...

27일 전

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Fifteen Parity Check
The Matlab function fifteen initializes the 4x4 array with randperm(16), which produces 50% unsolvable puzzles. A <https://en.wi...

27일 전

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Convert Decimal Number to Hex number (including non integer value)
Convert Decimal Number to Hex number (including non integer value) E.X. (2598.675) in decimal = A26.ACCC in hexa

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Check if the input is an interprime

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Sub-sequence - 03
Given three sequences, find the length of the longest common subsequence. It is similar to the previous problem -- <https...

28일 전

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Sub-sequence - 02
Given two sequences, find the length of the longest common subsequence. a=[1,1,1,1,1,2,3,1,4] b=[2,3,0,0,9,5,4,1] longe...

28일 전

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Sub-sequence - 01
Find the length of the longest increasing subsequence in the given array. a=[2,4,2,1,3,5,6] longest increasing subsequen...

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Chain multiplication - 02
Following up on the problem in 55295, you found the number of multiplications needed to multiply two matrices. Now, you are giv...

28일 전

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Kolakoski Sequence
This is a modified version of the kolakoski sequence. Refer to the problem <https://www.mathworks.com/matlabcentral/cody/p...

28일 전

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Word Ladder
Given a set of words, and two other words - start and destination, Find the smallest chain from start to the destination such...

28일 전

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Quarantine Days
In these quarantine days, a list of what Max may do on a typical day is given in a table with the starting hour to ending hour. ...

28일 전

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The Tortoise and the Hare - 02
Previous problem <https://www.mathworks.com/matlabcentral/cody/problems/45425-the-tortoise-and-the-hare-01> Suppose in an inf...

28일 전

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Fill a rectangle with 1x1 and 2x2 tiles
A 3x2 rectangle can be filled with 1x1 and 2x2 tiles in three ways: The colors merely distinguish the sizes of the tiles. A 3...

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Count the ways to draw non-intersecting chords between points on a circle
There are 9 ways to draw non-intersecting chords between four points on the perimeter of a circle (including no chords at all). ...

28일 전

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Count unique orderings of vertices of a polygon
Cody Problem 2671 asks us to determine whether four points can be the corners of a rectangle. The points are not necessarily inp...

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Classify product/digit-sum sequences
Cody Problem 53120 involved a sequence in which a term is computed by multiplying the previous two terms and adding the digits o...

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Compute the Sequence of the Day
A sequence starts with 1 and 2, and each subsequent term is the sum of the digits of the product of the previous two terms. As a...

28일 전