Sum of series IV
What is the sum of the following sequence:
Σ(-1)^(k+1) (2k-1)^2 for k=1...n
for different n?
2 years 前
已解决
Sum of series III
What is the sum of the following sequence:
Σ(2k-1)^3 for k=1...n
for different n?
2 years 前
已解决
Encode Roman Numerals
Create a function taking a non-negative integer as its parameter and returning a string containing the Roman Numeral representat...
Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once.
Example:
Input s ...
2 years 前
已解决
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...
2 years 前
已解决
DNA N-Gram Distribution
Given a string s and a number n, find the most frequently occurring n-gram in the string, where the n-grams can begin at any poi...
2 years 前
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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...
2 years 前
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Kaprekar Steps
6174 is the Kaprekar constant. All natural numbers less than 10,000 (except some with same digits) can be reduced to 6174 in the...
2 years 前
已解决
Sum of series II
What is the sum of the following sequence:
Σ(2k-1)^2 for k=1...n
for different n?
2 years 前
已解决
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...
2 years 前
已解决
Sum of series I
What is the sum of the following sequence:
Σ(2k-1) for k=1...n
for different n?