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Product of Each Column
Given a matrix |mat| with |n| columns, return a row vector |v| of length |n|, where every element in |v| is the product of the |...

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Find out sum of prime number till given number
Find out sum of prime number till given number Example, if number is 10, then answer must be 17.

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Sunday bonus
Submit a solution on any Sunday and you will get 10 points. Only for MATLAB fans!

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Largest Prime Number
Given a matrix X, find the largest prime number in X.

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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...

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Determine if input is a perfect number
A <http://en.wikipedia.org/wiki/Perfect_number/ perfect number> occurs whent the sum of all divisors of a positive integer, exce...

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Matrix multiplication across rows
Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

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Specific Element Count
Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

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Find the number that has most primes those less than it
Given an vector x of integer numbers, find the element of x that has the most primes less than it.

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Remove and Sort
Given a randomized array n, sort it and remove all odd integers. n=5 y = [2 4]

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union without repitition
Let a = [9 9 9 9 9 9 8 8 8 8 7 7 7 6 6 6 5 5 4 2 1] b = [1 1 1 3 3 3 3 3 4 4 4 4 4 10 10 10] Output should be [9 8...

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Find the last digit
FInd the last digit of a given number. Given number is the input and output should be the last digit of that number.

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Count given word x in text.
Count how many times given word x repeats in text.

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Find the index of nth maximum of a row vector of real numbers
Given a vector of real numbers x, find the index idx of _n_ th maximum value. If nth maximum occurs more than once, return the i...

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i forgot to use capital I
When referring to yourself you should write "I" (capital) and not "i". So correct the input string x, but be aware that other u...

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More Simple String Concatenation
Take the first string input, reverse the order of the string from the end to beginning (i.e. apple becomes elppa), add a space a...

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Find the index of the lowest number in a matrix
Take a matrix, and find the [row cal] index of the lowest number

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Remove multiples of N
in the vector x remove all multiples of N. x = [1 2 3 4 5 6]; N = 2; Then y = [1 3 5];

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Temperature question
get the temperature...in celcius

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Determine given vector is even or odd
Find the numbers of the input vector is odd or even then replace even with 1 and odd with 0 Example x = [ 3 3 4 6 1] ...

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Replace all odd numbers with NaN
Replace all odd numbers in the vector or matrix with NaN. For example, if x = [1 3 4 5 8 11]; then return y = [NaN Na...

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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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Calories in a slice of pizza?
The total calories C in a pizza is printed on its box. You know the angle A (degrees) of the slice you placed on your plate. Ple...

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All odd - all even
All odd numbers in x are added, while all even numers are subtracted from this. example: x = [1 2 3 4 5]; y = +(1+3+5)-...

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Replace 0 indices in array with 1's
Take a incoming vector, and replace 0's with ones

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Reverse digits of a number
Reverse digits of a number. For example, return *321* for the input *123* . The left-hand zeros can be discarded. For exam...

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Find the diagonal of the square of side L
You are given a square of side length L, find D the length of its diagonal.

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Find max prime number
Given integer number n. Find the max prime number (mpn) that smaller than or equal to n. Example: n = 10 --> mpn = 7

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Add the odd numbers
Add only the odd numbers of x example: x = [1 2 3 4 5] the positive numbers are: 1 3 5, so their sum is 9

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determine amount cookies left
started with 3 cookies and you never ate any how many are left

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