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

Solve this!

2 years ago

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

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...

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 a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

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

inner product of two vectors

Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

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 ...

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

If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

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...

Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...

*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

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...

Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

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

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

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...

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

Given an array, return the cumulative difference. Example a = [ 1 3 5 7 ] cumdiff = [ 1 2 1 -2 ]

<http://en.wikipedia.org/wiki/Connect_Four Connect Four> is a game where you try to get four pieces in a row. For this problem, ...

3 years ago

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

Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

Your job is to tidy up a list of words that appear in a string. The words are separated by one or more spaces. Remove all words ...

Given a matrix a, determine whether or not a legal <http://en.wikipedia.org/wiki/Knight's_tour knight's tour> is present. The kn...

Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

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