Find number of days
The input is two date in string format (dd-mm-yyyy)
find out the number of days between these two dates.
Example:
input: ...
7ヶ月 前
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Back to basics 18 - justification
Covering some basic topics I haven't seen elsewhere on Cody.
Given a string with extra spaces in front and/or in back, return...
7ヶ月 前
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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>...
7ヶ月 前
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Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...
7ヶ月 前
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Remove the air bubbles
Given a matrix a, return a matrix b in which all the zeros have "bubbled" to the top. That is, any zeros in a given column shoul...
Sieve of Eratosthenes
Find the nth lucky prime number.
<https://planetmath.org/luckyprime>
can u find a way for large n?
7ヶ月 前
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Greed is good - Simple partition P[n].
Find a simple partition P[n]. E.g. P[10] = 4 + 3 + 2 + 1.
There are many solutions, compute just one set.
Don't repeat numbers...
Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1.
Hint: use increment.
7ヶ月 前
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Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for:
A = [ 1 5 8 ]
then
B = [ 1 1 5 ...
7ヶ月 前
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Create a vector
Create a vector from 0 to n by intervals of 2.
7ヶ月 前
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Flip the vector from right to left
Flip the vector from right to left.
Examples
x=[1:5], then y=[5 4 3 2 1]
x=[1 4 6], then y=[6 4 1];
Request not to use d...
Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.
7ヶ月 前
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Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes.
---
If you want to get a random permutation of integer...
7ヶ月 前
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Number of 1s in a binary string
Find the number of 1s in the given binary string.
Example. If the input string is '1100101', the output is 4. If the input stri...
Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...
7ヶ月 前
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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes.
---
You may already know how to find the logical indices o...
Check if number exists in vector
Return 1 if number a exists in vector b otherwise return 0.
a = 3;
b = [1,2,4];
Returns 0.
a = 3;
b = [1,2,3];
Returns 1.
7ヶ月 前
解決済み
Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
7ヶ月 前
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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...