feat: Add MaxNumberUsingVaragrs to compute maximum with variable arguments

WHAT the code does:
Defines a MaxNumberUsingVaragrs class with a static max() method.
Leverages Java varargs (int... A) to accept a flexible number of integer inputs.
Handles edge case of no arguments by returning Integer.MIN_VALUE.
Iterates through all arguments to determine and return the maximum value.
main() demonstrates usage with different numbers of inputs.

WHY this matters:
Shows practical use of varargs, a Java feature that simplifies method calls when the number of arguments is not fixed.
Provides a more flexible alternative to fixed-size array inputs.
Reinforces array traversal concepts and introduces defensive programming for empty input handling.
Useful in designing utility functions that can gracefully adapt to varied inputs.

HOW it works:
If no arguments are passed, max() immediately returns Integer.MIN_VALUE as a sentinel value.
If arguments are provided:
- Initializes max with the first element
- Iterates over the remaining arguments
- Updates max whenever a larger value is found
main() tests multiple cases:
- No input returns Integer.MIN_VALUE
- Single input returns that value
- Multiple inputs return the maximum

Tips and gotchas:
Returning Integer.MIN_VALUE for no arguments may be misleading in real applications; throwing an exception or using Optional could be safer.
Varargs internally translates into an array, so time complexity remains O(n).
Avoid mixing varargs with other parameters unless they are last in the method signature.
For performance-critical code, be mindful of the array creation overhead with varargs.

Use-cases:
Utility methods where input size is not known at compile time.
Mathematical or statistical helper functions (finding max, min, sum).
Educational examples for teaching varargs and flexible method design.
Simplifies APIs by avoiding the need for multiple method overloads.

Short key: class-maxnumberusingvaragrs varargs flexible-max.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

Section10Methods/src/MaxNumberUsingVaragrs.java

@@ -1,12 +1,10 @@
-public class MaxNumberUsingVaragrs
-{
-    static int max(int ...A)
-    {
-        if(A.length==0)return Integer.MIN_VALUE;
+public class MaxNumberUsingVaragrs {
+    static int max(int ...A) {
+        if(A.length==0) return Integer.MIN_VALUE;
+
         int max=A[0];
         for(int i=1;i<A.length;i++)
             if(A[i]>max)max=A[i];
-
         return max;
     }
     public static void main(String[] args) {