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What is the distance from point P(x,y) to the line Ax + By + C = 0?
Given a point, P(x,y), find the distance from this point to a linear line. INPUTS: x, y, A, B, C OUTPUTS: d, the distance ...

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Find the solution of algebraic equation
Find the solution of algebraic equation of the form an*x^n + a(n-1)*x^(n-1) + (an-2)*x^(n-2)+...... a2*x^2 + a1*x^1 + a0 = 0; ...

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Create array of all Distances between two Sets of Points : No Neural Network Toolbox
This Challenge is a subsection of <http://www.mathworks.com/matlabcentral/cody/problems/1110-usc-fall-2012-acm-martian-pranks Ma...

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Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...

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Swap two numbers
Example Input: a = 10 b = 20 Output a = 20 b = 10

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Hydrogens in a Saturated Hydrocarbon
Given (c) carbon atoms in a saturated hydrocarbon molecule (all single bonds), how many hydrogen atoms (h) are in the molecule?

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Sparse matrix calculate warning: Matrix is close to singular or badly scaled.
You don't have to correct any thing. The matrix is ​​close to singular (the determinant close to zero) Matlab indicate that Re...

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How I use quiver to plot 3+2i
Just use: quiver(3,2,1) for any complex number c, use: quiver(real(c),imag(c),1)

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Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

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Squares inside a square!

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Convert Cylindrical Cooridinates into Spherical Coordinate
For Cylindrical coordinate point, rho, fie (degrees) and z. Convert these points in Spherical Cooridinate System and save result...

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Number of 1s in the Binary Representation of a Number
*Description* Return the number of 1s in the (unsigned integer) binary representation of a number. This function should be ab...

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Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

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Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

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Split and count unique string in cell array
A loop solution: C=unique(A);nc=length(C); B=char(A);nb=length(B); D=zeros(nc,1); for i=1:nc for j=1:nb if str...

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Number of vertices of a hypercube
Return the number of vertices of a n-dimensional hypercube.

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Check if a vector and matrix are orthogonal (MATLAB)
See this :Low-density_parity-check_code Orthogonality mean 'mod 2=0'

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The meaning and function of codes on programming
size(permutataions,1) It just compute the number of ppossible permutations. randi([1 max_choice]) is a random choise the ge...

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Positive Infinity
Round the array a towards positive infinity

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Matlab Basics II - Free Fall
An object freely falling from rest under gravity covers a distance x given by: x = 1/2 gt^2 write a function that calculat...

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Product of elements in row
Product of matrix such that a=[3 3 1] b=9

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Remove the positive integers.
Given array,x, remove all the positive numbers and display ouput as y. Example x=[1 -2 3 -4] , output is y=[-2 -4].

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Negative matrix
Change the sign of all elements in given matrix.

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Project Euler: Problem 5, Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

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Deleting an element in a matrix
For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87] **re...

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Switch matrix to a column vector
for e.g. x = [1 2 3 4] y = 1 3 2 4

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find the surface area of a cube
given cube side length x, find the surface area of the cube, set it equal to y

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Append two matrix as shown below example
Append two matrix as shown below example A=[1 2; 3 4] and B=[5 6;7 8] Answer must be 1 2 5 6 3...

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Square a Number
Given an input x, return y, which is equal to the square of x.

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Negation the hard way
Write a function that has the following property: f(f(x)) = -x for any numeric array x. Note that there is no restriction on ...

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