Amazon SDE intern interview questions

1 round - low level system design, bus fare calculator, and one leadership principle question, 1 round - low level system design, bus fare calculator, and one leadership principle question, 1 round - low level system design, bus fare calculator, and one leadership principle question

first, I completed the oa. this was followed by a single interview round with an engineer. the interview was 45 minutes long. shortly afterwards, a couple days later, I recieved an offer.