  Superconductivity and charge density wave (CDW) appear in the phase diagram
of a variety of materials including the high - $T$$_c$ cuprate family and many
transition metal dichalcogenides (TMDs). Their interplay may give rise to
exotic quantum phenomena. Here, we show that superconducting arrays can
spontaneously form in TiSe$_2$ - a TMD with coexisting superconductivity and
CDW - after lithium ion intercalation. We induce a superconducting dome in the
phase diagram of Li$_x$TiSe$_2$ by using the ionic solid-state gating
technique. Around optimal doping, we observe magnetoresistance oscillations,
indicating the emergence of periodically arranged domains. In the same
temperature, magnetic field and carrier density regime where the resistance
oscillations occur, we observe signatures for the anomalous metal - a state
with a resistance plateau across a wide temperature range below the
superconducting transition. Our study not only sheds further insight into the
mechanism for the periodic electronic structure, but also reveals the interplay
between the anomalous metal and superconducting fluctuations.
