Solved

Accessing elements on the diagonal

Access the diagonal elements of a matrix without 'diag' function

11 years ago

Solved

Sort a vector

Sort a row vector without using MATLAB built_in function sort, descending or ascending as mentioned with t='de' or t='as'.

11 years ago

Solved

Identify the heavier bag

There are N=2^n bags of rice looking alike, N-1 of which have equal weight and one is slightly heavier. The weighing balance is ...

11 years ago

Solved

Wheat on a chessboard pt 2

If a chessboard were to have wheat placed upon each square such that x grains were placed on the first square and each successiv...

11 years ago

Solved

finding indices of a vector's elements

you have vector x,as input,sort it ascending by mathlab function or your own code,then in the new vector,sorted_x,for each eleme...

11 years ago

Solved

Wheat on a chessboard pt 1

If a chessboard were to have wheat placed upon each square such that one grain were placed on the first square and each successi...

11 years ago

Solved

matrix of natural number

Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 resides seially as shown in the examples below. ...

11 years ago

Solved

Return 'on' or 'off'

When the input is true, return 'on', otherwise, return 'off'.

11 years ago

Solved

Calculate Alcohol By Volume with Original and Final Gravity

Given an initial gravity of un-fermented wort (OG) and a final gravity of fermented wort (FG), better known as beer, it is possi...

11 years ago

Solved

Sum the Digits of a Number

Given an integer, sum the digits repeatedly until you end up with a single value less than 10. For example, if you add the di...

11 years ago

Solved

Happy 2013...

Happy 2013, everyone! An interesting tidbit about 2013 is that it is the first year since 1987 to contain four different digits...

11 years ago

Solved

Sum the elements in either diagonal of a square matrix

Sum the elements of a square matrix that lie on either the major diagonal or anti-diagonal.

11 years ago

Solved

Volume difference between Ellipsoid and Sphere

Given an ellipsoid of semi principal axis (a,b,c) find the volume of the difference between this ellipsoid and the sphere with...

11 years ago

Solved

Create array of all Distances between two Sets of Points

This Challenge is a subsection of <http://www.mathworks.com/matlabcentral/cody/problems/1110-usc-fall-2012-acm-martian-pranks Ma...

11 years ago

Solved

compare strings

Given 2 strings and 3 actions (Insert,delete,replace) on characters. Find the difference between two strings. Example: str...

11 years ago

Answered

Too late to submit Negative feedback for R2012b !

FYI, R2013a Prerelease is available for download. The doc is better than 12b : _The documentation now includes a table of con...

Too late to submit Negative feedback for R2012b !

FYI, R2013a Prerelease is available for download. The doc is better than 12b : _The documentation now includes a table of con...

11 years ago | 0

Solved

Simple return on investment

Assume you have some money and want to invest all your money to stock market. You randomly select a stock and invest all your mo...

11 years ago

Solved

Reverse the elements of an array

Reverse the order of elements in an array: eg: input X = [ 1 2 3 ; 4 5 6 ; 7 8 9 ] o...

11 years ago

Solved

Decrypt a secret message!

The crypto system in question is based on phone keyboard. We need two numbers in order to decrypt a word. First number represent...

11 years ago

Solved

Compute next 1000-day birthday milestone

Given a birthdate in DD-MMM-YYYY format, compute the next 1000-day birthday milestone. For example, Abraham Lincoln was born on ...

11 years ago

Solved

String permutations on phone keyboard

Given a number such as 2639 return all possible string permutations using the phone-keyboard on <http://www.mathworks.com/matlab...

11 years ago

Solved

Find out missing number from a vector of 9 elements

You are given a vector of size 9, x = [x1 x2 x3 x4 x5 x6 x7 x8 x9] Elements of x may be randomly selected without repeati...

11 years ago

Solved

Right Triangle Side Lengths (Inspired by Project Euler Problem 39)

If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

11 years ago

Solved

I've got the power! (Inspired by Project Euler problem 29)

Consider all integer combinations of a^b and b^a for the integer values 2 ≤ a ≤ 4 and 2 ≤ b ≤ 5: 2^2=4, 2^3=8, 2^4=16,...

11 years ago

Solved

Calculate the height of an object dropped from the sky

Assume that an object is dropped from 1000 meters above the surface of the earth at time t=0. The object is dropped such that t...

11 years ago

Solved

Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)

Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

11 years ago

Solved

Make a diamond

Given n, odd number > 1, return n by n matrix consist of "null" and "*" characters arranged like a diamond. No toolbox funct...

11 years ago

Solved

Three grind is shipsstraigt

A function that returns either 'Rock', 'Scissors', or 'Paper' (string). You may succeed or you may fail the (case insensitive) t...

11 years ago

Solved

Poker Series 07: IsTwoPair

The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

11 years ago