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FindThesecondLargest.cs
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44 lines (38 loc) · 1.12 KB
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using System;
using System.Collections.Generic;
namespace ConsoleApplication23
{
internal static class Program
{
public static void Main(string[] args)
{
int[] arr = {12, 25, 32, 14, 25, 56, 54, 23, 12};
var length = arr.Length;
var b= FindSecondLargestNumber(arr, length);
Console.WriteLine("The 2nd Largest No. is " + b );
}
private static int FindSecondLargestNumber(IReadOnlyList<int> arr, int length)
{
int i, second;
if (length < 2)
{
Console.WriteLine("Invalid Input");
return -1;
}
var first = second =0;
for ( i = 0; i < length; i++)
{
if (arr[i] > first)
{
second = first;
first = arr[i];
}
else if (arr[i] > second && arr[i] != first)
{
second = arr[i];
}
}
return second;
}
}
}