Answered

Precision problem while solving Cody Problems

There are quite a few problems that have been posted to Cody that erroneously use isequal() to test answers, rather than using a...

Precision problem while solving Cody Problems

There are quite a few problems that have been posted to Cody that erroneously use isequal() to test answers, rather than using a...

20 days ago | 1

Solved

Scrabble Scores - 4

This problem is part of a set of problems that successively develop a more sophisticated Scrabble scoring routine. The point dis...

8 months ago

Solved

Calculate Amount of Cake Frosting

Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

1 year ago

Solved

return row and column indices given 2 values which define a range

Inspired by problem <http://www.mathworks.co.kr/matlabcentral/cody/problems/856-getting-the-indices-from-a-matrice> Inputs: - ...

1 year ago

Solved

Morse Code Generator! Try it!

.... . .-.. .-.. --- . ...- . .-. -.-- --- -. . -.-.-- .-.. . - ... -.. --- ... --- -- . -- --...

1 year ago

Problem

Lights Out 15 - 5x5, broken buttons I

<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...

1 year ago | 0 | 7 solvers

Solved

Get Next Combination

Return next combination For example three-element combinations of 1:5 1 2 3 1 2 4 1 ...

1 year ago

Solved

Replicate elements in vectors

Replicate each element of a row vector (with NaN) a constant number of times. Examples n=2, A=[1 2 3] -> [1 1 2 2 3 3] ...

1 year ago

Solved

Pascal's Equilateral triangle inside a Matrix!!!

Given a number of row 'n', generate the following pascal's matrix 'p' where spaces are filled by 'zeros'. number of row, n = ...

1 year ago

Solved

Find the centre of an arc and its radius

Given two points on an arc (x0,y0) and (x1,y1) and the angle between them, alpha. Return the centre of the circle and the rad...

1 year ago

Solved

Approximate the inverse tangent by power series

Given values b (where abs(b)<=1) and n (polynomial order), write a function that calculates atan(b) by using power series.

1 year ago

Problem

Lights Out 14 - 5x5, four stages, x moves

<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...

1 year ago | 1 | 6 solvers

Problem

Lights Out 13 - 5x5, three stages, x moves

<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...

1 year ago | 1 | 6 solvers

Solved

Parsing Expressions - Binary Arithmetic Operators I

Parse and evaluate expressions like these: '1 + 2' '51 - 78' '42 * 9' The only operators are +, -, *. Both argu...

1 year ago

Solved

Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.

--------------------- for m: 3 1 3 3 10 1 9 1 9 4 1 4 5 6 5 ...

1 year ago

Solved

Given a matrix A (size m x n) create a matrix B (size m+2 x n+2) which consists of matrix A surrounded by zeros. See Example below:

A = [1 2 3 4 5 6] ----------- B = [0 0 0 0 0 0 1 2 3 0 0 4 5 6 0 0 0 0 0 0]

1 year ago

Solved

Given a Vector v1, create v2 which is the sum of each two adjacent elements in v1. {length(v2)=length(v1)-1}

if v1 is [1 2 3 4 5 6 7 8] then v2 should be [3 5 7 9 11 13 15]. if v1 is [1; 3; 5; 7] the...

1 year ago

Solved

Opposite point of the earth, what is the antipodal of a point ?

Given two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is ...

1 year ago

Solved

Calculate Resistance 2

In this problem, you have to calculate Resistance R of a linear conductor having voltage V across it and current I is passing i...

1 year ago

Solved

Calculate Resistance

Calculate Resistance R of a linear conductor having resistivity p, length l and area A

1 year ago

Solved

Add 3 numbers

In this problem, you have to add three numbers a, b and c. Give output d = add(a,b,c)

1 year ago

Solved

Sum of a geometric series

Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.

1 year ago

Problem

Lights Out 12 - 5x5, three stages, <7 moves

<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...

1 year ago | 0 | 7 solvers

Problem

Lights Out 11 - 5x5, with wrapping, x moves

<https://en.wikipedia.org/wiki/Lights_Out_(game) Lights Out> is a logic game wherein all lights need to be turned off to complet...

1 year ago | 1 | 9 solvers

Solved

Permutation Via Multiplication

Given two numbers a and b, determine if the product ab is a permutation of the digits of a. For example, this is always true for...

1 year ago

Solved

Mean number of letters per word (Easy)

Given a character array, s, representing a sentence, return a, the arithmetic mean of the number of letters per word in the give...

1 year ago

Solved

X O X Oh!

_This follows on from problem 44850 - X O X O_ <https://www.mathworks.com/matlabcentral/cody/problems/44850-x-o-x-o> On a...

1 year ago

Solved

X O X O

On a noughts and crosses board, how many possible unique combinations are there given a square grid of length n? Assumptions/...

1 year ago

Solved

Say type of roots in quadratic equation

Given the coefficients of a quadratic equation, write a function that gives the output y='RealDifferent' if the roots are real a...

1 year ago