/**
* <summary>The removeDistribution method takes a {@link DiscreteDistribution} as an input and loops through the entries in this distribution
* and if this map contains a mapping for the entry it puts the entry with its key - value, else it removes the entry.
* It also decrements the value of entry from sum and assigns to the sum variable.</summary>
*
* <param name="distribution">{@link DiscreteDistribution} type input.</param>
*/
public void RemoveDistribution(DiscreteDistribution distribution)
{
foreach (var entry in distribution.Keys)
{
if (this[entry] - distribution[entry] != 0)
{
this[entry] = this[entry] - distribution[entry];
}
else
{
Remove(entry);
}
_sum -= distribution[entry];
}
}
/**
* <summary>The addDistribution method takes a {@link DiscreteDistribution} as an input and loops through the entries in this distribution
* and if this map contains a mapping for the entry it puts the entry with its value + entry, else it puts entry with its value.
* It also accumulates the values of entries and assigns to the sum variable.</summary>
*
* <param name="distribution">{@link DiscreteDistribution} type input.</param>
*/
public void AddDistribution(DiscreteDistribution distribution)
{
foreach (var entry in distribution.Keys)
{
if (ContainsKey(entry))
{
this[entry] = this[entry] + distribution[entry];
}
else
{
Add(entry, distribution[entry]);
}
_sum += distribution[entry];
}
}