Community Profile

photo

ChrisR


Last seen: Today
1,930 total contributions since 2015

Faculty member in civil & environmental engineering

ChrisR's Badges

  • Famous
  • Cody Problems in Japanese Master
  • Promoter
  • Magic Numbers II Master
  • Sequences And Series I Master
  • ASEE Challenge Master
  • Matrix Patterns II Master
  • Number Manipulation II Master
  • Indexing II Master
  • Leader
  • Puzzler
  • Indexing I Master
  • Number Manipulation I Master
  • Speed Demon
  • Creator

View all

Contributions in
View by

Solved


counting sequence
A counting sequence is formed by "counting" the entries in a given sequence.

1 day ago

Solved


Find matching string from a list of strings
Write a function that returns a string that is a unique match (if it exists) of the string |inStr| from a list of strings |strLi...

1 day ago

Solved


Transposition as a CIPHER
This all about transcripting a text message. If the input string is: *s1 = 'My name is Sourav Mondal'*, then the output is: *s2...

1 day ago

Solved


Decimal Comparison
*Background* A utility of particular interest to Cody and other MATLAB ventures is comparing the equality of two numbers. In ...

1 day ago

Solved


Count alternating permutations
In an alternating permutation of numbers 1 to n, the numbers are arranged so that they alternately increase and decrease. For ex...

1 day ago

Solved


Mongean Shuffle : 2
Extension to <https://www.mathworks.com/matlabcentral/cody/problems/2479-mongean-shuffle problem 2479>: Determine the number...

2 days ago

Solved


Solve a Weird Calculator puzzle
The September 2012 issue of GAMES Magazine had a Weird Calculator puzzle by Erich Friedman. In this puzzle, the calculator has o...

2 days ago

Solved


Mongean Shuffle
A Mongean shuffle of an n card deck starts with putting the initial deck on the left hand side. * The top card of the deck is...

2 days ago

Solved


Tune your guitar
Given an input string with the scientific pitch notation for standard tuning ( <http://en.wikipedia.org/wiki/Guitar_tunings#Stan...

3 days ago

Problem


Find terms in the Connell sequence

3 days ago | 2 | 5 solvers

Solved


Poker Series 09: IsHighCard
The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

4 days ago

Solved


Poker Series 08: IsPair
The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

4 days ago

Solved


Young's modulus
Given a value of <http://en.wikipedia.org/wiki/Young_modulus Young's modulus> (Y) expressed on MegaPascal, convert it to the uni...

4 days ago

Solved


Center of mass
Given a matrix M(m,n), where m is the number of vertices of the geometrical element and n is 2 or 3 (2D-plane figure or 3D-solid...

4 days ago

Solved


Polynomial division
Divide a polynomial u by polynomial v and return the quotients only. Example: u = x^4+3*x^3+5*x+3 v = x^2+1 Answer: ...

4 days ago

Solved


Temperature Conversion Utility
There are a few problems on Cody regarding temperature conversion (C to K, C to F, F to C), but none include Rankine. Furthermor...

5 days ago

Solved


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

5 days ago

Solved


arrangement of symbols
There are n different symbols in which m symbols are identical (m<n). How many different arrangement can we make with these symb...

6 days ago

Solved


mathematics , probability problem
How many different result can we have, rolling k dice?

6 days ago

Problem


Generate a list of composite numbers

7 days ago | 0 | 3 solvers

Problem


Create a sequence of primes p such that p > n π(p)

7 days ago | 0 | 0 solvers

Solved


Vector push
Append an element |x| to the end of the vector |v| and return both the extended vector and the new number of its elements. |x| c...

7 days ago

Solved


Interpolate scattered data.
Most data was scattered, and there is no gird. There are three data [c] in three different area [x,y]. x=[1 3 4]; y=[1 ...

7 days ago

Solved


Multiplication
Multiply two numbers in a different manner. The numbers are given to you as vectors x and y. Example x = [ 1 2 0 1 ] ...

7 days ago

Solved


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...

7 days ago

Solved


Subtract integers and add doubles
Create a function that subtracts a from b if a and b are integers and adds them if they are floats.

7 days ago

Solved


Please check the last row
We have data of matrix, that is input. That contains 2 or more rows and the last row should contain the average of each column,...

7 days ago

Solved


Concatenated roots
Which is the value of this infinte concatenated roots? <<https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif>> Note: If ...

7 days ago

Solved


Airline Ticket Mod7 Checksum
There are 13 digits in an airline ticket number. If an airline ticket number is valid, the 13th digit should be the remainder of...

7 days ago

Load more