Solved

5 years ago

Solved

All your base are belong to us
Find the base _b_ logarithm of the input decimal number _x_. Express the output as a decimal number. The first argument is the n...

5 years ago

Solved

UICBioE240 problem 1.9
Swap the first and last columns of a matrix. So if A = [12 4 7; 5 1 4]; B = [7 4 12; 4 1 5]; ...

5 years ago

Solved

Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

5 years ago

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Vector raised to a power, element-wise (★)
Given a vector A and a number x, raise each element of the vector to the power of x. Thus, if A = [2 5 7 1] and x = 0.5, then ...

5 years ago

Solved

PEMDAS test (★★)
Create the function that will return the following expression for x and y. <<https://i.ibb.co/RHWyzrv/Code-Cogs-Eqn-1.gif>> ...

5 years ago

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

5 years ago

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for.

5 years ago

Solved

Variance computation (★)
Given a vector x with several values, compute the variance, whose formula is given by: <<https://i.imgur.com/Wg95KBE.gif>> ...

5 years ago

Solved

Variance computation (★★★)
Given a vector x with several values, compute the variance, whose formula is given by: <<https://i.imgur.com/Wg95KBE.gif>> ...

5 years ago

Solved

Average of corner elements of a matrix (★★)
(copy of prob 2235) Calculate the average of corner elements of a matrix. e.g. x=[1 2 3; 4 5 6; 7 8 9;] avg = (1+3+7+9)...

5 years ago

Solved

Approximate functions 1 (★★★)
Compute the following sum for any given x and positive integer n. <<https://i.imgur.com/eUwXdSE.gif>> <> Here m! denote...

5 years ago

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Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...

5 years ago

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Calculator spelling - Numbers to Letters
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

5 years ago

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Calculate trends in time series
Create a new variable that has trends in input series. If _t+1_ is bigger than or equal to _t_, than trend in _t_ will be 1, oth...

5 years ago

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Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

5 years ago

Solved

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...

5 years ago

Solved

polar inertia
given locations of a set of unit masses on complex plane, find polar moment of inerta about the origin. for example output 4 if ...

5 years ago

Solved

DC chopper
Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then...

5 years ago

Solved

Modulo with 5

5 years ago

Solved

sum of binomial series

5 years ago

Solved

How many days in a month?
Return the number of days in a given month in 2017. If the input is not a valid month number, return -1. Examples: Input...

5 years ago

Solved

Step number
Step number

5 years ago

Solved

UICBioE240 problem 1.7
Find the other two angles of a right triangle given the two of the sides. So if A = [1 1] B = [45 45]

5 years ago

Solved

UICBioE240 problem 1.8
Given a list of grades in a class, write a script that gives the 2nd highest grade in the class and the average for the class. ...

5 years ago

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Odd row
Create a row 'y' with odd numbers where the potential maximum number is given by 'x' and the space between them by 'm'. The firs...

5 years ago

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Find the Pattern
Find the pattern between input and output. Write a function that gives the correct output for any input. *Hint: magic*

5 years ago

Solved

Goldbach's marginal conjecture - Write integer as sum of three primes
Goldbach's strong conjecture states that every even integer greater than 2 can be expressed as the sum of two primes. For exampl...

5 years ago

Solved

Numbers spiral diagonals (Part 2)
Inspired by Project Euler n°28 and 58. A n x n spiral matrix is obtained by starting with the number 1 and moving to the righ...

5 years ago

Solved

Parallel vectors
Return true or false depending on whether 2 vectors are parallel or not. Vectors can be 2 or 3 dimensional. The origin is not c...

5 years ago