word-delimiter-split.js

const solve = (s, d) => {
    // Write your code here
    let word = "";
    let words = [];
    let del = [];
    let i = 0;
    while (i < s.length) {
        if (d.indexOf(s[i]) === -1) {
            word += s[i];
            i++;
        } else {
            words.push(word);
            word = [];
            let dd = "";
            while (d.indexOf(s[i]) !== -1) {
                dd += s[i];
                i++;
            }
            del.push(dd);
        }
    }
    if (word.length) {
        words.push(word);
    }
    del.reverse();
    let result = "";
    while (words.length || del.length) {
        result += words.pop() || "";
        result += del.pop() || "";
    }
    return result;
};

debug(solve("hello//world:here", ["/", ":"]));