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How long do each of the stages of the rocket take to burn?

A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...

11 years ago

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Bit Reversal

Given an unsigned integer _x_, convert it to binary with _n_ bits, reverse the order of the bits, and convert it back to an inte...

11 years ago

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Simple Decoder Ring

The stereotypical _decoder ring_ is remembered as a cereal box prize from the 1950s. Kids learned about cryptography by startin...

11 years ago

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How many days does the cat take to climb out of the hole?

A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...

11 years ago

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Find the nearest integer

Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...

11 years ago

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It's race time again! Write a function that is at least twice as fast as the test suite call of repmat().

Given an input element x, and the dimensions, (m, n) return a matrix of size m x n filled with element x. This must be done in l...

11 years ago

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Max index of 3D array

Given a three dimensional array M(m,n,p) write a code that finds the three coordinates x,y,z of the Maximum value. Example ...

11 years ago

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Penny flipping - calculate winning probability (easy)

Two players are playing a fair penny flipping game. For each flip, the winner adds one penny from the loser's collection to his/...

11 years ago

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Convert elements in numeric array into different class

Write a function that converts elements in a numeric array into a different class. Example: a = [1:5]; % class: double b...

11 years ago

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Create matrix of replicated elements

Given an input element x, and the dimensions, (m, n) return a matrix of size m x n filled with element x. Example: Input: ...

11 years ago

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Center of mass

Given a matrix M(m,n), where m is the number of vertices of the geometrical element and n is 2 or 3 (2D-plane figure or 3D-solid...

11 years ago

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When can one be the Life Member of the IEEE?

Consult the site http://en.wikipedia.org/wiki/Ieee from where it can be seen that IEEE Members who have reached the age of 65 an...

11 years ago

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It's race time! Write a faster function than the test suite call of unique().

Write a function to get unique elements of a vector faster than unique()! Input will be a vector (of integers or floating point ...

11 years ago

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Decoding : Find the value

'u' in the function below is of type char or string and 'v' is of type int or double. function y = your_fcn_name( u, v) ...

11 years ago

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Determine the number of odd integers in a vector

Determine the number of unique odd integers in a vector. Examples: Input x = [2 5 8 3 7 1]; Output y = 4; Inp...

11 years ago

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Who is the smartest MATLAB programmer?

Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

11 years ago

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Generate a random matrix A of (1,-1)

Input n: is an positive integer which serves as the dimension of the matrix A; Output: A=(Aij),where each entry Aij is either...

11 years ago

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Two-output anonymous function?

Return a function handle that when applied to an input, it produces two outputs: the first is the same as the input, and the sec...

11 years ago

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Create a random vector of integers with given sum

Your task today is to write a function that returns a vector of integer numbers, between, and including, 1 and m, of which the s...

11 years ago

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Apply a function array to an array of numbers

It is required to apply a cell array of functions to a numerical array, where the functions accept only scalar inputs. Exampl...

11 years ago

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Output any real number that is neither positive nor negative

Output any real number that is neither positive nor negative

11 years ago

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Property dispute!

Two neighbors have rectangular plots of land A and B. The surveyors give you the coordinates of each. If they overlap, there is ...

11 years ago

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Create a Video

Create an avi video of the function surf(sin(2*pi*k/20)*Z,Z) for k=1:100 with an avi "quality" of 5. The standard quality is ...

11 years ago

Problem

Join Strings with Multiple Different Delimiters

The idea is to form the string S by interleaving the elements of a cell array of strings DELIMITER and another cell array of st...

11 years ago | 0 | 174 solvers

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Join Strings with Multiple Different Delimiters

The idea is to form the string S by interleaving the elements of a cell array of strings DELIMITER and another cell array of st...

11 years ago

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Mean ignoring NaNs

Define a function that behaves in the same way as mean(x) and mean(x,d) except that it ignores NaNs (unless all of the values be...

11 years ago

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Prime Time

All you need to do here is submit your solution a prime number of seconds after the top of the hour. Any hour at all... Easy, ...

11 years ago

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Create an 'arrow-head" matrix

Write a function that when given an odd number, produces an arrow-head function pointing to the right. Examples n = 3 ...

11 years ago