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Sum of Dividend Digits
Find the smallest number that consist of only number 1's (e.g. 11111111111) which satisfy a given divisor and remainder. Then re...

12 years ago

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grazing cows
Here is a fun problem I encountered in high school. Two cows are grazing in an enclosed square-shaped field of side length s ...

12 years ago

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Back to the Future III
Marty McFly and Doc Brown are "back" again. See the test suite to see what they are up to.

12 years ago

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

12 years ago

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Back to the future II
See test suite

12 years ago

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Back to the future
See test suite See also: http://www.mathworks.com/matlabcentral/cody/problems/2449-back-to-the-future-ii

12 years ago

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remove single elements
Given a vector of integers, remove the elements that have appeared only once. The output elements should be in exact order as th...

12 years ago

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Find 100 from a Matrix and Replace With 0 with less computation time
pls use this matrix x = [208 40 167 180 112 70 192 215 90 19 231 100 9 100 97 100 ...

12 years ago

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Text processing - Help Johnny write a letter home from camp
Johnny overuses the word 'great'. Write a script that will help him with this and future letters. If a sentence contains more ...

12 years ago

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Max of a Vector
Write a function to return the max of a vector

12 years ago

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Reshape a Vector
Write a function that accept three inputs. The first one is a row vector S. The second and third arguments are m and n which de...

12 years ago

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Fermat's last theorem - again
For a given integer n, express it as a sum of two squares if possible. Return empty matrix otherwise. Solution may not be unique...

12 years ago

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possible ways through matrix
This problem is inspired from problem 2405 <https://www.mathworks.com/matlabcentral/cody/problems/2405-the-number-of-ways>. C...

12 years ago

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The Number of Ways
Find all the possible ways to reach the end of a matrix. So given [a b c d] the possible ways [a c],[a d],[b c],[b ...

12 years ago

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Integer to boolean
Write a general function that will create the following conversation; Input is a column vector with integers Output is a b...

12 years ago

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Find the biggest digit in a matrix
Write a function to find the biggest digit in a matrix; input -> a matrix output -> a digit For example; [12; 47;...

12 years ago

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Justify the character string in center with proportional fonts
how to justify a string of character into center with proportional fonts? Example: x='justify string ' output is ' justif...

12 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...

12 years ago

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Sum of digit range
Example: If A is n1, and B is n2 digit positive numbers. A*B's digit range will be [c d] (c = min & d = max). Then return ...

12 years ago

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Kepler's Equation
Solve <http://en.wikipedia.org/wiki/Kepler's_equation Kepler's Equation>. Note that the solution is rounded down to 5 decima...

12 years ago

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Inverse of Hilbert matrix
Given a non-negative integer x, return the element-wise power of 2 of the inverse of Hilbert matrix.

12 years ago

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Integer or Float?
Test an input to see whether it is an integer or a floating point number. If it is an integer return 1 for 'true'. Otherwise ret...

12 years ago

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Are you in XY plane?
Take a point P as an input position Vector (x,y,z). If you are in XY plane, return 1 as an output otherwise return 0. Example...

12 years ago

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You are in XY plane ?
Take point having position Vector of (x,y,z). You have to decide whether this point lies in XY plane or not. If it lies then ret...

12 years ago

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R2012b atan in Degrees
Return in degrees the atan result of inputs for all four quadrants. *Examples:* [x, y] Degrees 1 0 0 1 1 ...

12 years ago

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Find the Nth Root of a Given Number
Find the Nth root of a given number x. Examples x = 4096 n = 4 y = 8 x = 625 n = 5 y = 3.6239

12 years ago

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Area of a triangle
A triangle is given with base *'b'* ,vertical hight *'h'* . then find it's area.

12 years ago

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Area of a disk
Find the area of a disk or circle. x= radius of the disk.

12 years ago

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Convert Hard Drive marketing sizes to actual data sizes
Hard drive sizes are typically marketed using the decimal meaning of prefixes, whereas RAM uses binary meanings. For example: ...

12 years ago

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I want eval
A valid MATLAB statement containing a definition of a vector is passed as a string S. Determine the length of the vector. Inp...

12 years ago