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3 years ago

Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector of numbers, output a square array with the...

Solve this!

2 years ago

Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];

There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

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, ...

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

you just discovered its circumference, that is the input.

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

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