Round 1: [Find common Manager](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/)\n\nRound 2: [Implement Queue](https://leetcode.com/problems/implement-queue-using-stacks/)\n\nRound 3: [Buy and sell stocks](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/)\n\nRound 4: [Design Youtube](https://leetcode.com/discuss/interview-question/496042/Design-video-sharing-platform-like-Youtube)\n\nRound 5 :[Word Break](https://leetcode.com/problems/word-break/)

Round 1: Find common Manager\n\nRound 2: Implement Queue\n\nRound 3: Buy and sell stocks\n\nRound 4: Design Youtube\n\nRound 5 :Word Break