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Counting Sequence

Given a vector x, find the "counting sequence" y. A counting sequence is formed by "counting" the entries in a given sequence...

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Triangle of numbers

Create a matrix with the integers from 1 to |n| arranged in a triangular shape. Every row |i| of the matrix contains |i| inte...

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Back to basics 2 - Function Path

Covering some basic topics I haven't seen elsewhere on Cody. Given a string that is the name of a MATLAB function, return a s...

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Prime factor digits

Consider the following number system. Calculate the prime factorization for each number n, then represent the prime factors in a...

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Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.

--------------------- for m: 3 1 3 3 10 1 9 1 9 4 1 4 5 6 5 ...

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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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Replace Nonzero Numbers with 1

Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

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Area of a pentagon

Given the side of a regular pentagon and its apothem return the area of pentagon. Remember the area of pentagon is calculate ...

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Find the area of the square

There are *n²* circles inscribed in the square ABCD. The perimeter of each circle is *aπ* <<http://imgfz.com/i/3wzCeAT.png>> ...

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Times 5

Try out this test problem first. Given the variable x as your input, multiply it by five and put the result in y. Examples...

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Times 10

Try out this test problem first. Given the variable x as your input, multiply it by ten and put the result in y. Examples:...

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Doubling elements in a vector (★★)

(copy of prob. 1024) Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] t...

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Mo money, mo math #2! (★★★)

(adapted from Prob 9 Cody team) You have a matrix for which each row is a person and the columns represent the number of quar...

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Sort even numbers from 1 to 100

Sort even numbers from 1 to 100 for ex: x=1:100

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Sum of terms in a series 1 (★★★)

Given x and n, compute the following sum: |x|+|x|^(1/2)+|x|^(1/3)+|x|^(1/4)+|x|^(1/5) ... + |x|^(1/n) where ||x|| indica...

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Sum 1 to 100 even number

Write a Matlab program to add all the even numbers from 0 to 100 |

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Times 11

Try out this test problem first. Given the variable x as your input, multiply it by eleven and put the result in y. Exampl...

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Mo money, mo math 1! (★★★)

(adapted from Prob 9 Cody team) You have a vector where the elements represent the number of $20 bills, $10 bills, $5 bills, ...

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Times 3

Try out this test problem first. Given the variable x as your input, multiply it by three and put the result in y. Example...

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Given a square and a circle, please decide whether the square covers more area.

You know the side of a square and the diameter of a circle, please decide whether the square covers more area.

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Pi Digit Probability

Assume that the next digit of pi constant is determined by the historical digit distribution. What is the probability of next di...

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Convert hex color specification to MATLAB RGB

Here's something that comes up all the time if you deal with web pages. Given a <http://www.w3schools.com/html/html_colors.as...

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Find out sum and carry of Binary adder

Find out sum and carry of a binary adder if previous carry is given with two bits (x and y) for addition. Examples Previo...

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Bit Reversal

Given an unsigned integer _x_, convert it to binary with _n_ bits, reverse the order of the bits, and convert it back to an inte...

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There are 10 types of people in the world

Those who know binary, and those who don't. The number 2015 is a palindrome in binary (11111011111 to be exact) Given a year...

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Relative ratio of "1" in binary number

Input(n) is positive integer number Output(r) is (number of "1" in binary input) / (number of bits). Example: * n=0; r=...

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Binary code (array)

Write a function which calculates the binary code of a number 'n' and gives the result as an array(vector). Example: Inpu...

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