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Percentage profit:3
x% product is sold at r1% profit. However, our target overall profit is rt%. What is the required percentage profit to meet the ...

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Percentage profit:5: Cumulative Interest
If a bank is giving r% yearly cumulative interest for deposit, how much profit we can get by keeping x amount of money for n mon...

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Matrix Pattern 8

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How many complete pizzas (number 2)
x is a vector with numbers of pizza slices. A corresponding vector n indicates in how many slices the pizza slices of x were cut...

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Recursive Standard Deviation
When you have a large set of data, it can be resource consuming to calculate standard deviation at every step. So why not calcul...

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Matrix diagonalization
You will be given Two matrices A and B. Return 1 if B is the diagonal matrix of A, 0 otherwise

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Minimal cost
A power house, P, is on one bank of a straight river W meters wide, and a factory, F, is on the opposite bank L meters downstr...

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Slicing the cube
A bored matlab enthusiast has a cube with volume n^3. He decides to paint the entire surface of the cube red. Then, with slices...

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Grid traversal
Given a line defined by (x1,y1) & (x2,y2),return the number of squares that the line crosses on the grid (a square is 1x1). ...

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Filter British English into American English
Given a sentence written with British spelling, return the sentence with the offending word(s) replaced with the American spelli...

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Find the first N zeros of the 666 function
Using the following definition of the 666 function for this problem: _f(n)=sin('nnn')-cos(n*n*n)_, write a function that returns...

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Matrix Pattern 6

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Matrix Pattern 4

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Find the Area of a Polygon
Consider 2-D geometry and assume that the points are given in form of rows of a matrix. Find the area of polygon enclosed by the...

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Find elements of set A those are not in set B
Given two sets of data A and B. Find elements of A those are not in set B. ...

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Spiral Matrix
for a given integer n>=3, generate a matrix of nxn such that the value n^2 is at bottom left and its decreasing towards center ...

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poll: would you like the regexp (?@cmd) functionality to be banned in Cody?
This problem is a poll (and a little bit of "white hat hacktivism" as well) regarding Cody users sentiment about the use of rege...

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Low level NaN
* I have a dataset. Columns represents different variables. * A variable may start with NaN or any double type number. * If i...

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Convert String to Morse Code
Convert a given string to international <http://en.wikipedia.org/wiki/Morse_code Morse Code> * Strings will only have [A-z], ...

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rectangle in circle
In the figure below, the rectangle at the corner measures a cm x b cm. What is the radius of the circle in cm? <<http://www....

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Airline Ticket Mod7 Checksum
There are 13 digits in an airline ticket number. If an airline ticket number is valid, the 13th digit should be the remainder of...

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Get the elements of diagonal and antidiagonal for any m-by-n matrix (★★★★)
(copy of prob. 859) In this problem you must submit a solution which returns the diagonal and anti-diagonal elements without ...

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Expand a term
Given a term, as a string, expand it. e. g. f = '2(x + y)';

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Check if integer
Given a vector of elements, determine if each element is an integer and return true or false accordingly.

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Last Digit of fibonacci number

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Replace values out of an interval with the lower or upper values
For a vector or matrix X and an interval [n1,n2], the function replace every element of x inferior to n1 by n1, and every elemen...

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Select every other element of a matrix
Write a function called outMat = odd_idx( myMat ) that takes a matrix, myMat, as input argument and returns a matrix th...

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Which way to go?
Given an m*n grid, How many ways are there to go from upper left corner to the lower right one? You can only move right...

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Simple date to serial no. conversion
Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...

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Rule of mixtures (composites) - lower bound
The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

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