Counting Triplets There is an integer array arr[n] and an

Implement a function factorial(n) that calculates the factorial of a

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Waymo 作为全球领先的自动驾驶公司，其技术面试不仅考察算法和数据结构能力，更关注候选人在高压环境下的决策能力、优化思维以及沟通表达。许多候选人在 LeetCode 练习时能够轻松解题，但在面试现场，由于时间紧迫、面试官的追问以及心理压力，可能会陷入焦虑，导致无法流畅完成解题。CSOAHELP 的远程面试实时辅助正是为了解决这一问题，让候选人在面试中能够从容应对，稳定发挥，最终拿下 Offer。 在 Waymo 的一次真实面试中，候选人被要求解决如下问题： "You

Implement a function factorial(n) that calculates the factorial of a

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Amazon's technical interviews are known for their high pressure and