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The Goldbach Conjecture

The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

6ヶ月 前

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Remove the vowels

Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

6ヶ月 前

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Create an index-powered vector

Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

6ヶ月 前

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Find nth maximum

Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

6ヶ月 前

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Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

6ヶ月 前

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Find the two most distant points

Given a collection of points, return the indices of the rows that contain the two points most distant from one another. The inpu...

6ヶ月 前

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Duplicates

Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...

6ヶ月 前

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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...

6ヶ月 前

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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...

6ヶ月 前

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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 ...

6ヶ月 前

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Symmetry of vector

Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...

6ヶ月 前

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Create an n-by-n null matrix and fill with ones certain positions

The positions will be indicated by a z-by-2 matrix. Each row in this z-by-2 matrix will have the row and column in which a 1 has...

6ヶ月 前

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Multiply by 3

Given the variable x as your input, multiply it by three and put the result in y.

6ヶ月 前

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Compute a dot product of two vectors x and y

x and y are input vectors, d is a number and contains their dot product

6ヶ月 前

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Who knows the last digit of pi?

There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...

6ヶ月 前

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Perfect Square or not

find Given input x is perfect square or not,if yes then output y=1.else y=0

6ヶ月 前

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Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

6ヶ月 前

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Mandelbrot Numbers

The <http://en.wikipedia.org/wiki/Mandelbrot_set Mandelbrot Set> is built around a simple iterative equation. z(1) = c z...

6ヶ月 前

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Interpolator

You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

6ヶ月 前

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Sum of big primes without primes

Inspired by Project Euler n°10 (I am quite obviously a fan). With problem n°250 by Doug, you can find some global methods to ...

6ヶ月 前

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Sums of cubes and squares of sums

Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...

6ヶ月 前

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Project Euler: Problem 4, Palindromic numbers

A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 ...

6ヶ月 前

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Kinetic Energy

Given the mass m and velocity v of an object, determine its <http://en.wikipedia.org/wiki/Kinetic_energy kinetic energy>.

6ヶ月 前

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Compare two input matrices

Check which input matrix has more elements. Return "1" if matrix A has more elements than matrix B. Otherwise return "0". Exa...

6ヶ月 前

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04 - Scalar Equations 1

Define the variable a: <<http://samle.dk/STTBDP/Assignment1_4-a.png>> Use this to calculate x: <<http://samle.dk/STTBD...

6ヶ月 前

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Sort a list of complex numbers based on far they are from the origin.

Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

6ヶ月 前

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Is the Point in a Circle?

Check whether a point or multiple points is/are in a circle centered at point (x0, y0) with radius r. Points = [x, y]; c...

6ヶ月 前

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Make one big string out of two smaller strings

If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

6ヶ月 前