// ProgrammingEx5_2.java
public class ProgrammingEx5_2 {

    // Method 1: Calculate the sum of two numbers
    public static int calculateSum(int a, int b) {
        return a + b;
    }
// Method 2: Find the maximum number from an array
    public static int findMax(int[] array) {
        int max = array[0];
        for (int i = 1; i < array.length; i++) {
            if (array[i] > max) {
                max = array[i];
            }
        }
        return max;
    }
// Method 3: Check if a string is a palindrome
    public static boolean isPalindrome(String s) {
        String reversed = new StringBuilder(s).reverse().toString();
        return s.equals(reversed);
    }
// Method 4: Calculate the factorial of a number
    public static int calculateFactorial(int n) {
        if (n == 0) {
            return 1;
        } else {
            return n * calculateFactorial(n - 1);
        }
    }
// Method 5: Convert a string to uppercase
    public static String convertToUppercase(String s) {
        return s.toUpperCase();
    }
}