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C# / .NET - Math.Max() method example

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The `Math.Max()` function returns the highest number from given numbers.

``````using System;

public class Program
{
public static void Main(string[] args)
{
int max = Math.Max(2, 5);
Console.WriteLine( max ); // 5

Console.WriteLine( Math.Max(1, 2)     ); // 2
Console.WriteLine( Math.Max(1.5, 2.0) ); // 2

Console.WriteLine( Math.Max(2, Double.NaN) ); // NaN
}
}``````

1. Documentation

 Syntax ``````namespace System { public static class Math { // ... public static byte Max(byte val1, byte val2) { ... } public static decimal Max(decimal val1, decimal val2) { ... } public static double Max(double val1, double val2) { ... } public static short Max(short val1, short val2) { ... } public static int Max(int val1, int val2) { ... } public static long Max(long val1, long val2) { ... } public static sbyte Max(sbyte val1, sbyte val2) { ... } public static float Max(float val1, float val2) { ... } public static ushort Max(ushort val1, ushort val2) { ... } public static uint Max(uint val1, uint val2) { ... } public static ulong Max(ulong val1, ulong val2) { ... } // ... } }`````` Parameters `val1, val2` - values to compare. Result Maximal `number` value (primitive value). It returns `NaN` if at least one of the provided values is not a number. Description `Max` is a static method that takes number arguments and returns the biggest one value.

2. Getting max value from array examples

2.1. With `Max()` method from `System.Linq`.

``````using System;
using System.Linq;

public class Program
{
public static void Main(string[] args)
{
int[] array = new int[] { 1, 5, 2, 16, -5 };

int max = array.Max();
Console.WriteLine( max ); // 16
}
}``````

2.2. By comparing all the elements in the array

``````using System;

public class Program
{
static double Max(double[] array)
{
double result = Double.NegativeInfinity;
foreach (double currentNumber in array)
{
if (result < currentNumber) result = currentNumber;
}
return result;
}

public static void Main(string[] args)
{
double[] numbersArray = new double[] { 1.4, 5.0, 2.2, 16.0, -5.0 };

Console.WriteLine( Max( numbersArray ) ); // 16
}
}``````

References

1. Maxima and minima - Wikipedia

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