Theme Demo - DuoTone - JavaScript Mode function findSequence(goal) { function find(start, history) { if (start == goal) return history; else if (start > goal) return null; else return find(start + 5, "(" + history + " + 5)") || find(start * 3, "(" + history + " * 3)"); } return find(1, "1"); // comment test } Select a theme: default duotone-dark-cm duotone-darksea-cm duotone-darkspace-cm duotone-darkearth-cm duotone-darkforest-cm duotone-darkcave-cm duotone-darkdesert-cm duotone-darkheath-cm duotone-darkmeadow-cm duotone-darkpark-cm duotone-darkpool-cm duotone-darklake-cm duotone-light-light-cm