Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.Stack;

public class Main {
    public static boolean isBalanced(String in) {
        Stack<Character> st = new Stack<Character>();

        for (char chr : in.toCharArray()) {
            switch (chr) {
            case '{':
            case '(':
            case '[':
                st.push(chr);
                break;
            case ']':
                if (st.isEmpty() || st.pop() != '[')
                    return false;
                break;
            case ')':
                if (st.isEmpty() || st.pop() != '(')
                    return false;
                break;
            case '}':
                if (st.isEmpty() || st.pop() != '{')
                    return false;
                break;
            }
        }
        return st.isEmpty();
    }

    public static void main(String args[]) {
        System.out.println(isBalanced("level"));
        System.out.println(isBalanced("(level)"));
    }
}