Computer Networking: A Top-Down Approach (7th Edition)
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Author: James Kurose, Keith Ross
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Implement a recursive procedure computing the given entry in Pascal's triangle in the getCoefficient method in 'pascal.scala'.
Transcribed Image Text:E pascal.scala ●
a02-pascal > src > main > scala-3 >= pascal.scala > ...
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// Scala 3 (DO NOT EDIT OR REMOVE THIS LINE!!!)
package pascal
/**
* Returns the k:th value in the n:th row of the Pascal's triangle
*
(that is, the binomial coefficient (n k), or the number of how many ways
we can select k items from a set of n items).
* For more information, see e.g.
http://en.wikipedia.org/wiki/Pascal%27s_triangle
* http://en.wikipedia.org/wiki/Binomial_coefficient
*
*
*As this is a basic exercise on recursion,
you are not allowed to use var-declarations, Arrays or
*any scala.collection.mutable data types.
*/
def getCoefficient(n: Int, k: Int): Int =
require(n >= 0)
require(0 <= k && k <= n)
???
end getCoefficient
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