Given an age in seconds, calculate how old someone would be on:
So if you were told someone were 1,000,000,000 seconds old, you should be able to say that they're 31.69 Earth-years old.
If you're wondering why Pluto didn't make the cut, go watch this youtube video.
To run the tests, run the command dotnet test
from within the exercise directory.
Initially, only the first test will be enabled. This is to encourage you to solve the exercise one step at a time.
Once you get the first test passing, remove the Skip
property from the next test and work on getting that test passing.
Once none of the tests are skipped and they are all passing, you can submit your solution
using exercism submit SpaceAge.cs
For more detailed information about the C# track, including how to get help if you're having trouble, please visit the exercism.io C# language page.
Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial. http://pine.fm/LearnToProgram/?Chapter=01
// This file was auto-generated based on version 1.2.0 of the canonical data.
using Xunit;
public class SpaceAgeTest
{
[Fact]
public void Age_on_earth()
{
var sut = new SpaceAge(1000000000);
Assert.Equal(31.69, sut.OnEarth(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_mercury()
{
var sut = new SpaceAge(2134835688);
Assert.Equal(280.88, sut.OnMercury(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_venus()
{
var sut = new SpaceAge(189839836);
Assert.Equal(9.78, sut.OnVenus(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_mars()
{
var sut = new SpaceAge(2129871239);
Assert.Equal(35.88, sut.OnMars(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_jupiter()
{
var sut = new SpaceAge(901876382);
Assert.Equal(2.41, sut.OnJupiter(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_saturn()
{
var sut = new SpaceAge(2000000000);
Assert.Equal(2.15, sut.OnSaturn(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_uranus()
{
var sut = new SpaceAge(1210123456);
Assert.Equal(0.46, sut.OnUranus(), precision: 2);
}
[Fact(Skip = "Remove to run test")]
public void Age_on_neptune()
{
var sut = new SpaceAge(1821023456);
Assert.Equal(0.35, sut.OnNeptune(), precision: 2);
}
}
using System;
using System.Collections.Generic;
public class SpaceAge
{
private int SecondsTotal { get; set; }
private const double EarthOrbitalPeriodSecondsPerYear = 365.25 * 24 * 60 * 60;
private Dictionary<string, double> PlanetsOrbitalPeriodSecondsPerYear = new Dictionary<string, double>() {
{"Mercury", 0.2408467 * EarthOrbitalPeriodSecondsPerYear},
{"Venus", 0.61519726 * EarthOrbitalPeriodSecondsPerYear},
{"Mars", 1.8808158 * EarthOrbitalPeriodSecondsPerYear},
{"Jupiter", 11.862615 * EarthOrbitalPeriodSecondsPerYear},
{"Saturn", 29.447498 * EarthOrbitalPeriodSecondsPerYear},
{"Uranus", 84.016846 * EarthOrbitalPeriodSecondsPerYear},
{"Neptune", 164.79132 * EarthOrbitalPeriodSecondsPerYear},
};
public SpaceAge(int seconds)
{
SecondsTotal = seconds;
}
public double OnEarth()
{
return SecondsTotal / EarthOrbitalPeriodSecondsPerYear;
}
public double OnMercury()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Mercury");
}
public double OnVenus()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Venus");
}
public double OnMars()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Mars");
}
public double OnJupiter()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Jupiter");
}
public double OnSaturn()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Saturn");
}
public double OnUranus()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Uranus");
}
public double OnNeptune()
{
return SecondsTotal / PlanetsOrbitalPeriodSecondsPerYear.GetValueOrDefault("Neptune");
}
}
A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.
Here are some questions to help you reflect on this solution and learn the most from it.
Level up your programming skills with 3,450 exercises across 52 languages, and insightful discussion with our volunteer team of welcoming mentors. Exercism is 100% free forever.
Sign up Learn More
Community comments