GJam 2012 Qualifier: Tongues
This Challenge is a Warm-Up for <http://code.google.com/codejam/schedule.html Google Code Jam 2014> Qualifying round coming up o...
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Speed of light:Experiment
in 1849, Fizeau set up an experiment to measure the speed of light.
The discription of this experiment can be found on wikipedi...
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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1.
Example...
12年以上 前
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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because
6 = 1 + 2 + 3
which can be displa...
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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B.
So if
A = [1 2 3; 4 5 6];
and ...
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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
Replace pattern 0 1 0 and 1 0 1
Find and replace a pattern in a row of zeroes and ones.
* Find 1 0 1 and replace it with 1 1 1
* Find 0 1 0 and replace it w...
Which way to go?
Given an m*n grid,
How many ways are there to go from upper left corner to the lower right one?
You can only move right...
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How many rectangles in a grid ?
How many rectangles are there in an m × n grid ?
For example, if m=1 & n=2, we have 3 rectangles.
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Times 2 - START HERE
Try out this test problem first.
Given the variable x as your input, multiply it by two and put the result in y.
Examples:...
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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so:
x = [1 2 3 4]
Commas are optional, s...
12年以上 前
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Delete the rows in the middle
We will delete the rows in the middle and keep the first and the last rows.
For example if input is
[1 2
1 7
1 8
...