Thread: Compare strings

public class CompareString {
    public static void main(String[] args) {
 
 
        StringBuilder s1 = new StringBuilder("axx#bb#c");
        StringBuilder s2 = new StringBuilder("axbd#c#c");
 
        if (compareStrings(s1, s2))
            System.out.print("True");
        else
            System.out.print("False");
    }
 
    public static boolean compareStrings(StringBuilder s1, StringBuilder s2) {
        int countS1 = -1;
        int countS2 = -1;
 
 
        for (int i = 0; i < s1.length(); i++) {
 
 
            if (s1.charAt(i) == '#' && countS1 != -1)
                countS1 -= 1;
 
 
            else if (s1.charAt(i) != '#') {
                s1.setCharAt(countS1 + 1, s1.charAt(i));
                countS1 += 1;
            }
        }
 
 
        for (int i = 0; i < s2.length(); i++) {
 
 
            if (s2.charAt(i) == '#' && countS2 != -1)
                countS2 -= 1;
 
            else if (s2.charAt(i) != '#') {
                s2.setCharAt(countS2 + 1, s2.charAt(i));
 
                countS2 += 1;
            }
        }
        if (countS2 != countS1)
            return false;
 
 
        else if (countS1 == -1 && countS2 == -1)
            return true;
 
        else {
            for (int i = 0; i <= countS2; i++) {
                if (s1.charAt(i) != s2.charAt(i))
                    return false;
            }
            return true;
 
 
        }
    }
}

The code works, but the teacher insisted that instead of the Boolean type there should be an int type, and that it would return not true or false, but 1 or 0

public static int compareStrings(String s1, String s2)

pls help )

Did you look at the String class to see if it has any methods that do what you want?

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[code]
**YOUR CODE GOES HERE**
[/code]

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how to change this code so that it returns 1 and 0

What are the conditions for the code to return a 0?
What are the conditions for the code to return a 1?
Given answers to those two questions, work on the code to do it.