解決済み

Who invented zero?
We know the importance zero in computer science, mathematics... but who invented zero? Clue: He was the first in the line ...

11年以上前

解決済み

kmph to mps
convert kilometer per hour to meter per second

11年以上前

解決済み

Find state names that start with the letter N
Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

11年以上前

解決済み

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

11年以上前

解決済み

select the primes of a vector
Find the prime numbers in a vector

11年以上前

解決済み

Number of Circles in a Number
Given a number, return the number of closed 'circles' in the base 10 numerical representation. Note: the number 4 has no circ...

11年以上前

解決済み

Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

11年以上前

解決済み

Periodic Table II 101.
Given the symbol of an element, return its atomic number. This is the continuation of <http://www.mathworks.com/matlabcentral/co...

11年以上前

解決済み

James Bond film count
Twenty-three James Bond films have been produced, in the years 1962, 1963, 1964, 1965, 1967, 1969, 1971, 1973, ... 197...

11年以上前

解決済み

Special matrix
Make a square matrix with this shape. For n=4 M = 1 1 0 0 1 0 1 0 0 1 0 ...

11年以上前

解決済み

Altitude of locations on the earth
Find the altitude of a location on the earth, given latitude and longitude coordinates, above mean sea level. Input__________...

11年以上前

解決済み

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...

11年以上前

解決済み

Remove the polynomials that have positive real elements of their roots.
The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the <http://www.ma...

11年以上前

解決済み

Tic Tac Toe FTW
Given a tic tac toe board: * 1 represents X * 0 represents empty. * -1 represents O It is X's move. If there is an imme...

11年以上前

解決済み

Volume of a sphere given its surface area
You just measured its surface area, that is the input.

11年以上前

解決済み

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

11年以上前

解決済み

Moving average (variable kernel length)
Find the moving average in a vector. The kernel length is a variable. For example x = 1:10 kernel_length = 2 would r...

11年以上前

解決済み

Derivative of polynomial
Compute the derivative of a given polynomial. The input is an <http://www.mathworks.com/help/matlab/math/representing-polynomial...

11年以上前

解決済み

CONVERT TAN TO SIN
In a right angle triangle ABC given the tan(A) then find sin(A) For example tan(A)=3/4 then sin(A)=3/5

11年以上前

解決済み

Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

11年以上前

解決済み

Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

11年以上前

解決済み

Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

11年以上前

解決済み

Counting in Finnish
Sort a vector of single digit whole numbers alphabetically by their name, in Finnish. See the Wikipedia page for <http://en.wik...

11年以上前

解決済み

Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

11年以上前

解決済み

Calculate the Levenshtein distance between two strings
This problem description is lifted from <http://en.wikipedia.org/wiki/Levenshtein_distance>. The Levenshtein distance betwee...

11年以上前

解決済み

Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

11年以上前

解決済み

Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

11年以上前

解決済み

Back to basics 1 - Saving
Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...

11年以上前

解決済み

give nth decimal place of pi
max 15th place after the decimal point is ok for now

11年以上前

解決済み

So many choices
For inputs _n_ and _k_ (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. ...

11年以上前