Albert Yam

Ryerson University

Actif depuis 2011

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A résolu

Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

plus de 11 ans il y a

A résolu

Removing rows from a matrix is easy - but what about inserting rows?
Assume A is a 5-by-5 matrix. A([2,4],:) = [] is a quick way to remove rows 2 and 4. Can you find a quick way to insert rows into...

plus de 11 ans il y a

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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...

presque 12 ans il y a

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

presque 12 ans il y a

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Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

presque 12 ans il y a

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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

presque 12 ans il y a

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Flag largest magnitude swings as they occur
You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

presque 12 ans il y a

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String substitution, sub problem to cryptoMath
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

presque 12 ans il y a

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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...

presque 12 ans il y a

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Convert a vector into a number
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

presque 12 ans il y a

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Steal, Share, or Catch
You, I, and a few other characters are going to play a game of *Steal, Share or Catch*. We are going to play it 10,000 times vs...

presque 12 ans il y a

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Retirement savings
At the start of what year will you have reached or exceeded a savings goal? Parameters (all are constant scalars given in a s...

environ 12 ans il y a

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Decode a simplified barcode
Given a bar code from this <http://www.mathworks.com/matlabcentral/cody/problems/602-make-a-simplified-bar-code exercise>: Re...

environ 12 ans il y a

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Make a simplified barcode
Given an integer to encode, make a barcode using the following encoding scheme: * The bar code is made from the binary versio...

environ 12 ans il y a

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Kaprekar numbers
Test if the input is a Kaprekar number: <http://mathworld.wolfram.com/KaprekarNumber.html>. Return a logical true or false. ...

environ 12 ans il y a

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Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

environ 12 ans il y a

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Knight's Tour Checker
Given a matrix a, determine whether or not a legal <http://en.wikipedia.org/wiki/Knight's_tour knight's tour> is present. The kn...

environ 12 ans il y a

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

environ 12 ans il y a

A résolu

Find best placement for ordered dominoes (harder)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

environ 12 ans il y a

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Find perfect placement of non-rotating dominoes (easier)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

environ 12 ans il y a

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Rotate and display numbered tile
Imagine a square tile with four numbers on it, one on each edge. We will call these edges north, east, south, and west. If th...

environ 12 ans il y a

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Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

environ 12 ans il y a

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Scoring for oriented dominoes
Given a list of ordered pairs, and the order they should be placed in a line, find the sum of the absolute values of the differe...

environ 12 ans il y a

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

environ 12 ans il y a

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Poker Series 11: selectBestHand
The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

environ 12 ans il y a

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Poker Series 10: bestHand
The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

environ 12 ans il y a

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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...

environ 12 ans il y a

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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...

environ 12 ans il y a

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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...

environ 12 ans il y a

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Poker Series 06: isThreeKind
The Poker Series consists of many short, well defined functions that when combined will lead to complex behavior. Our goal is t...

environ 12 ans il y a

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Albert Yam

Ryerson University

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