Method printBinStrings

7_RecursionBasics/RecursionBasics.java:149–162

(int n, int lastPlace, String str)

    }

    public static void printBinStrings(int n, int lastPlace, String str) {
        //base case
        if(n == 0) {
            System.out.println(str);
            return;
        }

        //kaam
        printBinStrings(n-1, 0, str+"0");

        if(lastPlace == 0) {
            printBinStrings(n-1, 1, str+"1");
        }
    }
    public static void main(String args[]) {
        printBinStrings(3, 0, "");
    }