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Reduan Azouaghe #115

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57 changes: 30 additions & 27 deletions csharp-fundamentals-maps.Main/Core.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,19 +6,19 @@

namespace csharp_fundamentals_maps.Main
{
public class Core
{
/*
The final fundamental building block of C# is a Dictionary. There is still much to learn about the language,
but this component will allow you to start building lots of more complex pieces of software.
Dictionary<K, V>
K is where you'd put the data type of the key for an item, V is the data type of the value.
If we wanted to map a persons details (their first name, last name, occupation etc.), we could use
a Dictionary using a String key and a String value like so:
Dictionary<string, string>
*/
public class Core
{

/*
The final fundamental building block of C# is a Dictionary. There is still much to learn about the language,
but this component will allow you to start building lots of more complex pieces of software.

Dictionary<K, V>
K is where you'd put the data type of the key for an item, V is the data type of the value.
If we wanted to map a persons details (their first name, last name, occupation etc.), we could use
a Dictionary using a String key and a String value like so:
Dictionary<string, string>
*/

//TODO: Spend some time understanding the method below
/*
Expand Down Expand Up @@ -48,9 +48,9 @@ in the createPerson method

public string getValue(string key)
{
return string.Empty;


return createPerson()[key];


}
Expand All @@ -62,11 +62,11 @@ public string getValue(string key)
The method must return a boolean that represents whether the string provided exists as a key
in the provided dictionary
*/
public bool hasKey(Dictionary<string,string> dictionary, string isitthere)
{
return false;
}
public bool hasKey(Dictionary<string, string> dictionary, string isitthere)
{
return dictionary.GetValueOrDefault(isitthere) != null;

}


//TODO: 3. Modify method named getValueOrDefault that accepts two parameters:
Expand All @@ -76,9 +76,9 @@ public bool hasKey(Dictionary<string,string> dictionary, string isitthere)
The method must use the string provided to return the integer contained in the provided HashMap,
or -1 if the string provided is not a key in the HashMap
*/
public int getValueOrDefault(Dictionary<string,int> dictionary, string isitthere)
public int getValueOrDefault(Dictionary<string, int> dictionary, string isitthere)
{
return 0;
return dictionary.GetValueOrDefault(isitthere, -1);

}

Expand All @@ -94,7 +94,7 @@ input output
public List<string> buildSecretPhrase(int[] numbers)
{
List<string> results = new List<string>();

// Do not modify the map
Dictionary<int, string> map = new Dictionary<int, string>();
map.Add(23, "chicken");
Expand All @@ -105,10 +105,13 @@ public List<string> buildSecretPhrase(int[] numbers)
map.Add(96, "nice");
// Write your code below this comment...


foreach (int n in numbers)
{
results.Add(map.GetValueOrDefault(n, "unkown"));
}

// // ...and above this comment
// ...and above this comment
return results;
}
}
}
}
13 changes: 4 additions & 9 deletions csharp-fundamentals-maps.Main/Extension.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ public Extension()
_planets = new Dictionary<string, float>();
_planets.Add("Jupiter", 5.2f);
_planets.Add("Uranus", 19.2f);
_planets.Add("Pluto", 39f);
// _planets.Add("Pluto", 39f);
_planets.Add("Mercury", 0.39f);
_planets.Add("Saturn", 9.54f);
_planets.Add("Earth", 1f);
Expand All @@ -36,23 +36,18 @@ public Dictionary<string,int> LettersInName()
// the planet name and the number of letters in its name
// iterate the _planets using a foreach object to load the result dictionary.


_planets.Keys.ToList().ForEach(k => result[k] = k.Length);

return result;
}






public Dictionary<string,float> OrderedPlanets()
{
return _planets.OrderBy(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
}
public Dictionary<string, float> OrderedPlanetsByDescending()
{
return _planets.OrderBy(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
return _planets.OrderByDescending(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
}
//TODO: modify the OrderedPlanetsByDescending so it is not dictionary is not doing an OrderBy but OrderByDescending

Expand All @@ -67,7 +62,7 @@ public Dictionary<string, float> OrderedPlanetsByDescending()

public string FurthestFromTheSun()
{
return string.Empty;
return OrderedPlanetsByDescending().Keys.First();
}
public string ClosestToTheSun()
{
Expand Down