const data = ["AB", "AD", "DB", "BC", "BS", "CE", "SE", "AF", "FK", "KD", "DL"];
const detectChains = (data) => {
return data.reduce((a, e) => {
a[e] = data.filter(s => s[0] === e[1]);
return a;
}, {});
}
const buildChains = (a, c) => {
let n = 0;
Object.keys(a).forEach(e => {
const p = a[e];
if (c[e]['length']) {
delete a[e];
c[e].forEach(cc => {
a[cc] = p+cc;
});
n++;
}
});
if (n>0) buildChains(a, c);
}
const i = 0;
const c = detectChains(data);
data.forEach(d => {
const s = { [d]: d };
buildChains(s, c);
const ret = Object.keys(s).filter(key => s[key].length>2).map(key => s[key]);
if (ret.length>0) console.log({ [d]: ret });
});
Anonymous - 3 years ago