Find a maximum and second maximum value in an array using c#.net


For Example, I have an array like { 21, -31, 36, 99, -33, 58, 87, -83, -73, 94 }, want to find out the maximum value and second maximum value from that array. Here I am having both negative and positive values.

I am listing out the simple steps to do this task easily understanble.



1) Define the array int[] myArray = { 21, -31, 36, 99, -33, 58, 87, -83, -73, 94 };

2) Initialize the variables int maxNum1 = 0, maxNum2 = 0;

3) Looping it from 0 to array length

4) Performing the if condition with myArray[loop] > maxNum1 && maxNum2 <= maxNum1.

5) Assigning maxNum1 in maxNum2 and myArray[loop] in maxNum1.

6) Else conditon for the if with myArray[loop] > maxNum2 and Assigning myArray[loop] in maxNum1.

7) Getting the out put from maxNum1 and maxNum2





using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace ConsoleApplication3

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine("This is a Program to get the Maximun vlue and Second Maximum value from a given Array");

Console.WriteLine("******************************************************************");

Console.WriteLine();

int[] myArray = { 21, -31, 36, 99, -33, 58, 87, -83, -73, 94 };

int maxNum1 = 0, maxNum2 = 0;

for (int loop = 0; loop < myArray.Length; loop++)

{

if (myArray[loop] > maxNum1 && maxNum2 <= maxNum1)

{

maxNum2 = maxNum1;

maxNum1 = myArray[loop];

}

else if (myArray[loop] > maxNum2)

{

maxNum2 = myArray[loop];

}

}

Console.WriteLine("First Max : {0} and Second max in array : {1} in a given array", maxNum1, maxNum2);

Console.Read();

}

}

}







Regards,
Naveen


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