object BinarySearch
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- sealed trait ComparisonResult extends AnyRef
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- def array[T](array: Array[T], compare: (T, Int) => ComparisonResult): Option[T]
Binary search using a custom compare function.
Binary search using a custom compare function.
scala.util.Searching does not support the ability to search an IndexedSeq by a custom mapping function, you must search by an element of the same type as the elements of the Seq.
- array
Must be sorted according to compare function so that for all i > j, compare(array(i), array(i)) == Greater.
- compare
Callback used at every guess index to determine whether the search element has been found, or whether to search above or below the guess index.
- returns
The first element where compare(element) == Equal. There is no guarantee which element is chosen if many elements return Equal.
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- case object Equal extends ComparisonResult with Product with Serializable
- case object Greater extends ComparisonResult with Product with Serializable
- case object Smaller extends ComparisonResult with Product with Serializable
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