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With apologies to William Blake

Coder Coder, typing fast Sitting at your desk, aghast. What immortal MATLAB script will solve this problem, nice and qu...

6 months ago

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Evened up (or not)

You will be provided with an array or matrix that contains various numbers, in addition to an evening variable, e, set to 1 or 0...

6 months ago

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De-primed

Write a function that will multiply every prime number in the array or matrix by two, leaving all other numbers the same, and re...

6 months ago

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Digital Neighbourhood

Given a natural number reorder its digits to create another number, closest to the given one. Examples: * 123 gives 132, ...

8 months ago

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Big numbers, least significant digits

Given two numbers, x and n, return the last d digits of the number that is calculated by x^n. In all cases, d will be the number...

8 months ago

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Binary Neighbourhood

Given a natural number reorder its binary form to create another number, closest to the given one. Examples: * 1 gives 2, ...

1 year ago

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Convert to Binary Coded Decimal

Convert from decimal representation to <http://en.wikipedia.org/wiki/Binary-coded_decimal Binary Code Decimal> (or BCD) represen...

1 year ago

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Find out the Gray Code for a Given Binary Number

Find out <http://en.wikipedia.org/wiki/Gray_code Gray Code> for a given binary number Example Binary input 1000 Gray ...

1 year ago

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Consecutive Equation Times (of the day)

Many times throughout the day can represent mathematical equations. In this problem, we focus on the largest consecutive run of ...

1 year ago

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Equation Times (of the day)

Many times throughout the day can represent mathematical equations. In this problem, we focus on times that include the four bas...

1 year ago

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Power Times (of the day)

Many times throughout the day can represent mathematical equations. In this problem, we focus on times that represent powers. Fo...

1 year ago

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Bit calculation

Give me the count of numbers from 1 to n having their last two bits as 0. For example function y = ret_count(4) y = x...

1 year ago

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Mysterious digits operation (easy)

What is this digit operation? 0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...

1 year ago

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~~~~~~~ WAVE ~~~~~~~~~

|The WAVE generator| Once upon a time there was a river. 'Sum' was passing by the river. He saw the water of the river that w...

1 year ago

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Draw 'B'

Draw a x-by-x matrix 'B' using 1 and 0. (x is odd and bigger than 4) Example: x=5 ans= [1 1 1 1 0 1 0 0 0 1 ...

1 year ago

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Draw a 'N'!

Given n as input, generate a n-by-n matrix 'N' using 0 and 1 . Example: n=5 ans= [1 0 0 0 1 1 1 0 0 1 1 0 ...

1 year ago

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Draw 'C'.

Given x as input, generate a x-by-x matrix 'C' using 0 and 1. example: x=4 ans= [0 1 1 1 1 0 0 0 ...

1 year ago

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Draw 'H'

Draw a x-by-x matrix 'H' using 1 and 0. (x is odd and bigger than 2) Example: x=5 ans= [1 0 0 0 1 1 0 0 0 1 ...

1 year ago

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Draw 'J'

Given n as input, generate a n-by-n matrix 'J' using 0 and 1 . Example: n=5 ans= [0 0 0 0 1 0 0 0 0 1 0 0 ...

1 year ago

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Draw a 'X'!

Given n as input Draw a 'X' in a n-by-n matrix. example: n=3 y=[1 0 1 0 1 0 1 0 1] n=4 y=[1 0 0...

1 year ago

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Draw 'E'

Draw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4) Example: x=5 ans= [1 1 1 1 1 1 0 0 0 0 ...

1 year ago

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Matrix Construction I

Given n, construct a matrix as shown in the example below. Example For n=8, the output should look like this: 1 2 3 4 ...

1 year ago

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Create a block diagonal matrix

A block diagonal matrix is a square matrix that can be written as A = [a 0 0 0 0 b 0 0 0 0 c 0 ...

1 year ago

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Toeplitz Matrix

For a given square matrix of order n-by-n check whether this is a Toeplitz matrix or not. Return true if it is.

1 year ago

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The Matrix Construction

Given two input ,first one is CN (Column Number), Second one is Dim Can you produce such a matrix for example CN=6; Dim=2 ...

1 year ago

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Diagonal of a Spiral Matrix

Write a function that will return same output as diag(spiral(n)). The only exception is that spiral and diag functions are not a...

1 year ago

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Generate this matrix

For a given odd integer n, generate a matrix as follows: Input: n = 5; Output: [ 2 1 0 0 0 1 ...

1 year ago

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Calendar Matrix

Return a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting ...

1 year ago

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Rainbow matrix

Create a "rainbow matrix" as described in the following examples Input = 3 Output = [ 1 2 3 2 3 2 ...

1 year ago

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Generate this matrix

Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

1 year ago