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ChrisR


Last seen: Today
1,921 total contributions since 2015

Faculty member in civil & environmental engineering

ChrisR's Badges

  • 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
  • Scholar

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Contributions in
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Problem


Find terms in the Connell sequence

14 hours ago | 0 | 0 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...

23 hours 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...

23 hours 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...

1 day 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...

1 day 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: ...

1 day 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...

2 days ago

Solved


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

2 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...

3 days ago

Solved


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

3 days ago

Problem


Generate a list of composite numbers

4 days ago | 0 | 1 solver

Problem


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

4 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...

4 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 ...

4 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 ] ...

4 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...

4 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.

4 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,...

4 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 ...

4 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...

4 days ago

Solved


Weighted average
Compute the weighted average Y, of the vector A, given the weight vector W. The weighted average is the sum of the dot produc...

4 days ago

Solved


Determinant without using det()
Given a square matrix A, compute the <http://en.wikipedia.org/wiki/Determinant determinant> of A. Note that you may not use t...

4 days ago

Solved


Converting Decimal to Binary
Given a decimal number that may include a fractional component, convert it into binary representation. The numbers you are given...

4 days ago

Solved


Find the starting index of a consecutive condition
Given a logical vector |v|, and a positive integer |n|, return the smallest index |i| that satisfies: all( v(i : i+n-1) ) =...

5 days ago

Solved


Where is 1?
There is a 3d matrix [A] that consist of many zeros and only one. A=zeros(100,100,100); i=randi(100); j=randi(100); ...

5 days ago

Solved


How to permute given 3d matrix?
A(:,:,1)=[1 3] A(:,:,2)=[2 2] A(:,:,3)=[4 3] Change rows to columns and columns to rows, similar to transpose. Resul...

5 days ago

Solved


Josephus Survivor
The <http://en.wikipedia.org/wiki/Josephus_problem Josephus Challenge> is to find the position that is the last remaining when e...

6 days ago

Solved


Seconds
Given the number of seconds after 12 am, find the time in the given format (12/24). If the format is not mentioned, use 24-ho...

6 days ago

Solved


Cross ("+") flag returns
Given two odd numbers, [m, n], return a matrix of size m x n which has all elements of the centre column and centre row set as 1...

6 days ago

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