Array.Sort Method (Array, Int32, Int32)

July 28, 2014

Sorts the elements in a range of elements in a one-dimensional Array using the IComparable implementation of each element of the Array.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static void Sort(
	Array array,
	int index,
	int length
)

Parameters

array
Type: System.Array
The one-dimensional Array to sort.
index
Type: System.Int32
The starting index of the range to sort.
length
Type: System.Int32
The number of elements in the range to sort.

ExceptionCondition
ArgumentNullException

array is null.

RankException

array is multidimensional.

ArgumentOutOfRangeException

index is less than the lower bound of array.

-or-

length is less than zero.

ArgumentException

index and length do not specify a valid range in array.

InvalidOperationException

One or more elements in array do not implement the IComparable interface.

Each element within the specified range of elements in array must implement the IComparable interface to be capable of comparisons with every other element in array.

If the sort is not successfully completed, the results are undefined.

This method uses the QuickSort algorithm. This implementation performs an unstable sort; that is, if two elements are equal, their order might not be preserved. In contrast, a stable sort preserves the order of elements that are equal.

On average, this method is an O(n log n) operation, where n is length; in the worst case it is an O(n ^ 2) operation.

Windows Phone OS

Supported in: 8.1, 8.0

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