Example: Remove Brackets using replaceAll in Java

// Remove Brackets using replaceAll
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Define the algebraic expression
        String expressionWithBrackets = "(2 * {a + [b - c]} / 4)";
        System.out.println("Original Expression: " + expressionWithBrackets);

        // Step 2: Define the regular expression to match all bracket types
        // The pattern "[{}\\[\\]()]" matches any of {, }, [, ], (, )
        // Note: '[' and ']' are special characters in regex and need to be escaped with '\\'
        String regex = "[{}\\[\\]()]";

        // Step 3: Use replaceAll() to remove all matching bracket characters
        String expressionWithoutBrackets = expressionWithBrackets.replaceAll(regex, "");

        // Step 4: Print the modified expression
        System.out.println("Expression without Brackets (replaceAll): " + expressionWithoutBrackets);

        // Example with another expression
        String anotherExpression = "({x + y} / (z - 1)) * [p + q]";
        System.out.println("\nOriginal Expression: " + anotherExpression);
        System.out.println("Expression without Brackets (replaceAll): " + anotherExpression.replaceAll(regex, ""));
    }
}