programming-examples/c-sharp/Arrays/C# Program to Search an element with Array Indices.cs

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2019-11-15 12:59:38 +01:00
/*
* C# Program to Search an element with Array Indices
*/
using System;
class ArrayBinarySearch
{
public static void Main()
{
int[] ints = { 0, 10, 100, 1000, 1000000 };
Console.WriteLine("Array indices and elements: ");
for (int i = 0; i < ints.Length; i++)
{
Console.Write("[{0}]={1, -5}", i, ints[i]);
}
Console.WriteLine();
FindObject(ints, 25);
FindObject(ints, 1000);
FindObject(ints, 2000000);
Console.ReadLine();
}
public static void FindObject(Array array, Object o)
{
int index = Array.BinarySearch(array, 0, array.Length, o);
Console.WriteLine();
if (index > 0)
{
Console.WriteLine("Object: {0} found at [{1}]", o, index);
}
else if (~index == array.Length)
{
Console.WriteLine("Object: {0} not found. "
+ "No array object has a greater value.", o);
Console.WriteLine();
}
else
{
Console.WriteLine("Object: {0} not found. "
+ "Next larger object found at [{1}].", o, ~index);
}
}
}
/*
Array indices and elements:
[0]=0 [1]=10 [2]=100 [3]=1000 [4]=1000000
Object: 25 not found. Next larger object found at [2].
Object: 1000 found at [3]
Object: 2000000 not found. No array object has a greater value.