Community Profile

photo

ChrisR


Last seen: Today Active since 2015

I teach courses in water resources and environmental fluid mechanics.

Statistics

  • Sequences And Series II Master
  • Matrix Patterns I Master
  • Cody5 Easy Master
  • Functions I Master
  • Divisible by x Master
  • Tiles Challenge Master
  • Matrix Patterns III Master
  • Strings I Master
  • Famous
  • Cody Problems in Japanese Master
  • Promoter
  • Magic Numbers II Master

View badges

Content Feed

View by

Solved


Dimensions of Spaces
Find the dimension of the column space, null space, row space, and left null space for any matrix. Example input A=[1 2 ...

ongeveer 4 uur ago

Solved


Gray Image

ongeveer 5 uur ago

Solved


Flip the Image

ongeveer 5 uur ago

Solved


Classification metrics

ongeveer 5 uur ago

Solved


Largest Geometric Series
Extension of Ned Gulley's wonderful <http://www.mathworks.com/matlabcentral/cody/problems/317 Problem 317>. In a geometric se...

1 dag ago

Solved


Sum
Sum 1 and 2

10 dagen ago

Solved


row-th maximum row elements
Input a is a square matrix of size n*n. Output vector v is of size 1*n. The ith element of output v is the ith largest element o...

10 dagen ago

Problem


Compute the largest number whose prime factors sum to n
This problem deals with a sequence whose tenth term is 36 because the prime factors of 36 (2, 2, 3, 3) sum to 10. The number 32 ...

10 dagen ago | 1 | 4 solvers

Solved


Kaggle: Reverse Game of Life - Single Move to One Cell Case
<http://www.kaggle.com/c/conway-s-reverse-game-of-life Kaggle's Conway's Reverse Game of Life> contest inspires this Single Reve...

14 dagen ago

Problem


List the cuban primes
The number 61 is a cuban prime because it is prime and the difference two cubes, 64 and 125. Write a function to list the cuba...

14 dagen ago | 1 | 4 solvers

Solved


Twist 'n' Match
Given n and m, construct an n-by-n matrix a such that a, when rotated 90 degrees and compared with itself, matches itself in exa...

15 dagen ago

Solved


Poly2mask, drawpolygon or patch
Recently, I tried to plot a polygon in matlab, and I found there is a lot of embedded function that can be used. However, some f...

20 dagen ago

Solved


Clock Solitaire
Many card players will be familiar with the game of <http://en.wikipedia.org/wiki/Clock_patience Clock Solitaire>. Briefly, th...

21 dagen ago

Solved


Poker Card Deal!
Anyone want to play a card game? Well this is making one deck of cards, with the option of using 2 jokers. The outputs are ...

22 dagen ago

Solved


Combine Cards to make 21
Given between two and six cards, e.g. A _ 3 _ 7 _ 6 _ 2 place one of the mathematical symbols (+,-,*,/) in the space betw...

24 dagen ago

Solved


Easy Sequences 31: N-N's Sequence
We define the N-N's Sequence, as the series of all positive integers in ascending order and with repetition, wherein a appears ...

26 dagen ago

Solved


Godfather or Goodfather
Recently, I watched the movie called the Godfather. In my opinoin, Vito Corleone is not just a godfather, he is also a good fat...

26 dagen ago

Solved


Easy Sequences 28: Sum of Radicals of Integers
The radical of a positive integer is defined as the product of the distinct prime numbers dividing . For example, the distinct ...

26 dagen ago

Solved


Binpack Contest: Retro
The <http://www.mathworks.com/matlabcentral/contest/contests/3/rules Full Binpack Rules and examples>. This Challenge is a re...

27 dagen ago

Solved


Coin distribution
Imagine, u r in a shop. ur bill is n(2200). u want to pay the bill with minimum no of coins u have. u've coins of - 2000,1000...

28 dagen ago

Solved


Plotting Practice
Plot cos(x) vs x as shown in the figure below. Include the appropriate title, x-label, and y-label. Note, it is case sensitive. ...

28 dagen ago

Solved


Easy Sequences 25: Product of Series
The function 'P(n)' is defined as the series product: where 'T(n)' is the triangular sum: ...

29 dagen ago

Solved


GJam 2017 Kickstart: Leader (Small)
This Challenge is derived from <http://code.google.com/codejam/contest/6304486/dashboard#s=p0 GJam 2017 Kickstart Leader>. This ...

29 dagen ago

Solved


Easy Sequences 23: Hat Guessing Game!
Consider the following Game Show: Hats, with numbers written on each, were placed on the heads of the participants. Participant...

30 dagen ago

Solved


Draw matrix 'Swiss flag'( Euro 2020)
Draw a x-by-x matrix 'Swiss flag' using '0' and '1'.(x is odd and bigger than 4) Example x=5 ...

ongeveer een maand ago

Solved


Non-zero bits in 10^n.
Given an integer that is a power of 10, find the number of non-zero bits, k, in its binary representation. For example: * ...

ongeveer een maand ago

Solved


Change on Spiral Matrix
n>=3, generate a matrix of nth such that n^2 is the max number, and max number must be in [1,1] or [end, end]. One example will ...

ongeveer een maand ago

Solved


LIFO Validation
Write a function to check whether a LIFO (Last In First Out) restriction on inventory is violated. We have two input vectors ...

ongeveer een maand ago

Solved


Intercambiar columnas - UC3M

ongeveer een maand ago

Solved


Thank!
. Thank all.

ongeveer een maand ago

Load more