Dieses Problem beschäftigt mich seit langem. Ich habe die folgenden JSON-Daten

[
    {"prev_node": "0000000000000005","next_node": "0000000000000006"},
    {"prev_node": "0000000000000006","next_node": "0000000000000007"},
    {"prev_node": "0000000000000006","next_node": "0000000000000008"},
    {"prev_node": "0000000000000008","next_node": "0000000000000012"},
    {"prev_node": "0000000000000009","next_node": "0000000000000010"},
    {"prev_node": "0000000000000010","next_node": "0000000000000011"},
    {"prev_node": "0000000000000014","next_node": "0000000000000015"},
    {"prev_node": "0000000000000015","next_node": "0000000000000016"},
    {"prev_node": "0000000000000016","next_node": "0000000000000017"},
    {"prev_node": "0000000000000018","next_node": "0000000000000019"},
    {"prev_node": "0000000000000020","next_node": "0000000000000021"},
    {"prev_node": "0000000000000019","next_node": "0000000000000020"},
    {"prev_node": "0000000000000012","next_node": "0000000000000022"},
    {"prev_node": "0000000000000022","next_node": "0000000000000023"},
    {"prev_node": "0000000000000023","next_node": "0000000000000009"},
    {"prev_node": "0000000000000011","next_node": "0000000000000024"},
    {"prev_node": "0000000000000024","next_node": "0000000000000014"},
    {"prev_node": "0000000000000017","next_node": "0000000000000025"},
    {"prev_node": "0000000000000025","next_node": "0000000000000018"},
    {"prev_node": "0000000000000007","next_node": "0000000000000021"},
    {"prev_node": null,"next_node": "0000000000000005"},
    {"prev_node": "0000000000000021","next_node": null}
]

Finden Sie die Knoten des aktuell tiefsten Prozesses und wie viele Zweige es gibt

Hinweis: Knoten können nur nach unten gehen