To change places with someone; to be replaced or to swap positions (intransitive).
昼休みで店員と入れ替わって、彼がレジに立った。
They switched during lunch break and he took over the register.
古い展示品が新しいものと入れ替わった。
The old exhibit was replaced by a new one.
次の授業で席が入れ替わる予定だ。
The seats are scheduled to be swapped for the next class.
To change (places, seats, shifts, etc.) with someone; to switch or exchange (transitive use with a sense of mutual action).
二人は仕事のシフトを入れ替わって対応した。
The two swapped shifts to cover the work.
クラスで隣の子と席を入れ替わった。
I switched seats with the child next to me in class.