feat: Add IntToBinary class demonstrating integer to binary and hex conversion

WHAT the code does:
- Defines `IntToBinary` class with a `main()` method.
- Declares integer `x = 5`.
- Converts `x` to:
  - Binary string using `Integer.toBinaryString(x)`.
  - Hexadecimal string using `Integer.toHexString(x)`.
- Prints both results.

WHY this matters:
- Demonstrates Java’s built-in `Integer` utility methods for number base conversions.
- Reinforces how integers can be represented in different numeral systems.
- Useful in debugging, bitwise operations, and low-level programming.

HOW it works:
1. `Integer.toBinaryString(5)` → `"101"`.
2. `Integer.toHexString(5)` → `"5"`.

Output:
101
5

Tips & gotchas:
- These methods return **strings**, not numbers — cannot directly do arithmetic on results.
- For uppercase hex letters (A–F), use `Integer.toHexString(x).toUpperCase()`.
- Negative numbers are represented in **two’s complement** form for binary output.
- For other bases, use `Integer.toString(x, radix)` with desired radix (2–36).

Use-cases:
- Educational example for **number system conversion**.
- Useful in applications needing binary/hex representations (e.g., cryptography, compilers).
- Debugging bitwise operations.
- Prepping for coding interviews involving base conversions.

Short key: class-inttobinary-hex-conversion

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

Author: Someshdiwan

Section10Methods/PracticeProblems/src/IntToBinary.java

@@ -1,6 +1,5 @@
 public class IntToBinary {
-    public static void main(String[] args)
-    {
+    public static void main(String[] args) {
         int x = 5;
         System.out.println(Integer.toBinaryString(x));
         System.out.println(Integer.toHexString(x));