Community Profile

photo

图图 胡


Last seen: 4ヶ月 前 |  2021 年からアクティブ

統計

  • Project Euler I
  • CUP Challenge Master
  • Computational Geometry I Master
  • Community Group Solver
  • Solver

バッジを表示

Content Feed

表示方法

解決済み


Draw a '1' in a zero matrix!

4ヶ月 前

解決済み


Damping of Servomotors with Tachometer Feedback
In Control Engineering, servomotors with tachometer feedback can be modeled by the second order system K / [J*s^2 + (B + K*K...

4ヶ月 前

解決済み


Linear system of equations
Solve the system of equations in three variables.

5ヶ月 前

解決済み


Laguerre polynomials
Given an integer _n_ &ge; 0, generate the _n_-th <http://en.wikipedia.org/wiki/Laguerre_polynomials Laguerre polynomial>. *Ex...

5ヶ月 前

解決済み


Deriving a function using the difference quotient
Write a function that evaluates the derivative of a function in a given point using the well-know formula of the difference quot...

5ヶ月 前

解決済み


Make a diamond
Given n, odd number > 1, return n by n matrix consist of "null" and "*" characters arranged like a diamond. No toolbox funct...

5ヶ月 前

解決済み


Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

5ヶ月 前

解決済み


Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

5ヶ月 前

解決済み


Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

5ヶ月 前

解決済み


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?

5ヶ月 前

解決済み


Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

5ヶ月 前

解決済み


Sum of series
a(n) = n^2 - (n-1)^2 find the summation of the series upto n i.e. a(1)+a(2)+...+a(n)

5ヶ月 前

解決済み


Project Euler: Problem 7, Nth prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime nu...

6ヶ月 前

解決済み


Project Euler: Problem 8, Find largest product in a large string of numbers
Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...

6ヶ月 前

解決済み


Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 = 9 + 16 ...

6ヶ月 前

解決済み


Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

6ヶ月 前

解決済み


Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

6ヶ月 前

解決済み


Project Euler: Problem 5, Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

6ヶ月 前

解決済み


Project Euler: Problem 4, Palindromic numbers
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 ...

6ヶ月 前

解決済み


Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

6ヶ月 前

解決済み


Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

6ヶ月 前

解決済み


Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence
The function F(n) is defined as the set of Fibonacci numbers from the first up to the n-th. S(n) is the result of applying to F,...

6ヶ月 前

解決済み


Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

6ヶ月 前

解決済み


Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

6ヶ月 前

解決済み


Add two numbers
Given a and b, return the sum a+b in c.

6ヶ月 前

解決済み


Given two arrays, find the maximum overlap
Given two (integer) arrays s1 and s2, create a new array s3 which is as short as possible and contains both arrays. #1 s1 = [...

6ヶ月 前

解決済み


Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

6ヶ月 前

解決済み


Make roundn function
Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

6ヶ月 前

解決済み


Matlab Basics - Rounding III
Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

6ヶ月 前

解決済み


Sum of series IX
What is the sum of the following sequence: Σ 1/k! for k=1...n for different n?

6ヶ月 前

さらに読み込む