*don\'t forget to upvote if you found it helpful :)*\n\n`phone interview1`\nQ1. https://leetcode.com/problems/basic-calculator-ii/ (no division operator)\nconfirmed assumptions: result will fit in an int, numbers are positive, numbers fit in int, string starts with number, string has only valid characters, string has no spaces\n\nfollowup 1: what if we have negative numbers too  `example: 2--2+-3`\nfollowup 2: what if + can be unary too `example +2-1`\n\nQ2. https://leetcode.com/problems/basic-calculator-iii/ (no division operator)\n\n`phone interview 2:`\nQ1. https://leetcode.com/problems/clone-graph/\nQ2. https://leetcode.com/problems/longest-increasing-path-in-a-matrix/\n\n\nMy onsite experience:\nhttps://leetcode.com/discuss/interview-question/1162056/facebook-onsite-e4-usa/916742 \nhttps://leetcode.com/discuss/interview-question/1162048/facebook-or-system-design-or-onsite-or-E4-or-USA

don\'t forget to upvote if you found it helpful :)\n\nphone interview1\nQ1. https://leetcode.com/problems/basic-calculator-ii/ (no division operator)\nconfirmed