for 151b hw 9 #1

interleaveInstructions.js

function pOrder(s1, s2, acc) {
    if (s1.length == 0 && s2.length == 0) {
        console.log(acc);
    }
    if (s1.length != 0) {
        acc.push(s1.pop());
        pOrder(s1, s2, acc);
        s1.push(acc.pop());
    }
    if (s2.length != 0) {
        acc.push(s2.pop());
        pOrder(s1, s2, acc);
        s2.push(acc.pop());
    }
}