# Philip Butcher

Last seen: 4ヶ月 前 2020 年からアクティブ

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Model-Based Software Development, DO-178C.

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#### Feeds

Use a timetable to analyze a train timetable (Part 1)
Oh no, you missed your train to Boston! Find the departure time of the next available train by analyzing the train timetable. Th...

1年以上 前

Find all prime factors of the input
Given an input x, find its all prime factors. Return the vector with all factors in ascending order. Efficiency is the key here...

1年以上 前

Split Even Number Into Two Primes
Given an even whole number n (> 2), return a 2-element vector of primes, p, such that p(1) + p(2) = n. Fun note: technically it...

1年以上 前

Dartboard Average I
A dartboard arranges the numbers 1 to 20 such that each value is typically flanked by quite different values - for example, 20 i...

1年以上 前

Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)
Given a positive integer n, determine whether n is "oddish" or "evenish" - that is, whether the sum of the digits of n is odd or...

1年以上 前

Replace Vector Elements
Replace all elements in a vector which are equal to or smaller than zero with 0.1. Example: A = [1 2 3 -1 0 2 -3 -80]; ...

1年以上 前

Is the number of 1s in a binary integer odd or even?
Your function should turn the input integers into binary form and count the number of 1s in the binary. If the number is odd, re...

1年以上 前

Get the n-th rand number with given seed
Given seed s, return the n-th rand number using rand(). Round the answer with 4 digits. n is a postive integer.

1年以上 前

Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

1年以上 前

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)

1年以上 前

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

1年以上 前

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

1年以上 前

Sum of series VIII

1年以上 前

Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

1年以上 前

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?

1年以上 前

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

1年以上 前

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

1年以上 前

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

1年以上 前

Mass Conversion 2

1年以上 前

Area Conversion 2

1年以上 前

Area Conversion 1

1年以上 前

Velocity Conversion
Given a velocity in mph, convert it to km/h. Round the answer to the fourth decimal place.

1年以上 前

Energy Conversion 2

1年以上 前

Energy Conversion 1

1年以上 前

Laws of motion 1

2年弱 前

Find Logic 31

2年弱 前

Find Logic 24

2年弱 前

Mass Conversion 1

2年以上 前

Temperature Conversion 3

2年以上 前

Temperature Conversion 2

2年以上 前