TCNx/BitStuffing.java at main · 10xdev4u-alt/TCNx · GitHub

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public class BitStuffing {
    public static String bitStuff(String data) {
        String result = "";
        int count = 0;
        for(int i = 0; i < data.length(); i++) {
            char bit = data.charAt(i);
            result += bit;
            if(bit == '1') count++;
            else count = 0;
            if(count == 5) {
                result += '0';
                count = 0;
            }
        }
        return result;
    }

    public static String bitDeStuff(String data) {
        String result = "";
        int count = 0;

        for(int i = 0; i < data.length(); i++) {
            char bit = data.charAt(i);

            if(bit == '1') {
                count++;
                result += bit;
            } else {
                if(count == 5)
                    count = 0;
                else {
                    result += bit;
                    count = 0;
                }
            }
        }
        return result;
    }

    public static void main(String[] args) {
        String data = "1111101111110";

        System.out.println("Original: " + data);

        String stuffed = bitStuff(data);
        System.out.println("Stuffed:  " + stuffed);

        String destuffed = bitDeStuff(stuffed);
        System.out.println("Destuffed: " + destuffed);
    }
}