Failing the coding interview
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Failing the coding interview
- 1. Cracking the coding interview Soohan Ahn Freakout Inc Failing
- 2. Survey
- 10. Resume Screening
- 11. 200+@ Applied
- 12. + Applied by the company website.. By the Linkedin...
- 13. Number of process to the next step? 10+@
- 17. Check points ● Write a ‘hip’ resume. ○ Maybe, some recruiters would help you!
- 18. Check points ● Don’t waste time on the cover letter.
- 20. ● Citizen! Nationality. ● Or, Degree! ○ Funding…. Visa, Work permit
- 21. ● Japan, Singapore <<<< Australia, Canada <<<<<<< US Visa sponsorship difficulty (In my opinion..)
- 22. ● Possibility of relocation! ○ Indeed Tokyo -> Indeed US ○ Google Tokyo -> Google Palo Alto ○ Amazon Vancouver -> Amazon Seattle ○ etc.. Visa, Work permit
- 25. Invitement!
- 27. Online assesment - 2018/01 ● Codility ○ https://www.codility.com/ ○ Failed….
- 28. Shocked… End of the world...
- 29. Silicon Valley - HBO
- 30. Practice, Practice, Practice!!!! ● Codeforces ○ http://codeforces.com/
- 32. Practice, Practice, Practice!!!! ● Atcoder ○ https://atcoder.jp/
- 33. Difficulty ● Atcoder ○ Beginner contest: A,B,C ○ Reguler contest: A,B ● Codeforces ○ Div2: A,B,C
- 34. Online assesment - 2018/8 ● Atcoder ○ Difficult.. ○ 2/4 (50%) is enough. ○ Passed!
- 35. Online assesment - 2018/08 ● Codility ○ Passed!
- 36. Online assesment - 2018/08 ● Hackerrank ○ Passed!
- 37. Online assesment - 2018/11 ● Hackerrank ○ Passed!
- 39. Project assignment ● Implement simple project, and share it to the private repository.
- 40. Project assignment - 2018/11 ● A simple version of Imgur ● Floyd-warshall
- 44. Online VS Phone - Onsite Interview Online Phone, Onsite Platform Programming platform Whiteboard, Text editor Space complexity Not so important.. It is important!!! Time complexity It matters.. It is important!!! Mission Shut up and write down the code. Shut up and you fail!
- 45. Online Interview - 2018/8 ● Casual tech talk. ○ Failed to review my resume well... ○ Failed.... ○ Resume review is IMPORTANT!!
- 46. Online Interview - 2018/09 ● Design a chatting app. ● Implement LRU Cache.
- 47. Online Interview - 2018/09
- 51. Practice, Practice, Practice!!!! ● Easy, Medium : Essential ● Hard: Popular problems. ○ LRU Cache
- 52. Online Interview - 2018/12 ● Implement a random number distributor. ○ Std::vector::push_back… ● Should study STL, little bit deeper!
- 53. Online Interview - 2018/12
- 54. STL ● Standard template library for C++. ● JAVA: Collection (?)
- 55. Essential STL classes ● std::vector ○ Kind of array. ○ Using reserve makes better performance. ○ vector::push_back : Constant time.
- 56. Essential STL classes ● std::vector ○ https://en.cppreference.com/w/cpp/container/vector
- 57. Essential STL classes ● std::unordered_(map / set) ○ Hashmap. ○ Unsorted.
- 58. Essential STL classes ● std::map / set ○ Sorted hashmap. ○ http://www.cplusplus.com/reference/map/map/
- 59. Essential STL classes ● std::priority_quque ● std::stack ● std::queue ● std::list ● std::pair ● std::sort
- 60. Online Interview - 2018/11 ● Simple algorithm questions.
- 61. Online Interview - 2018/12 ● C++ and low-level questions. ● Failed. + No notice.
- 62. Online Interview - 2018/12 ● Light tech talk. ● About an assignment.
- 63. Onsite Interview
- 64. Before jumping to the onsite interview..
- 65. Online Interview - 2018/09 ● Signed NDA… ● Problem was simple. ● Be careful at the simple problem! ○ Check requirements and the edge cases!
- 66. Online Interview - 2018/12 ● 30 min tech talk. ● 1 algorithm problem
- 67. Onsite Interview - 2018/10
- 68. Onsite Interview - 2018/10 https://www.ana.co.jp
- 69. Onsite Interview - 2018/10
- 70. Onsite Interview - 2018/10 ● Meal: $65/day ● Taxi: $100/day ● ETC: $45/day ○ Wifi router..
- 71. Onsite Interview - 2018/10 ● Signed NDA… ● 60min X 5 + 60min lunch ○ 4 Engineers ○ 1 Product manager
- 72. Onsite Interview - 2018/10 ● Each interview ○ 30 min behaviour. ○ 30 min coding interview
- 73. Onsite Interview - 2018/10
- 74. Onsite Interview - 2018/10
- 75. Onsite Interview - 2018/10 ● Lack of the experience ○ Panic ○ Design problems(OOP, System)
- 77. Practice, Practice, Practice!!!! ● Not only solving lots of problem. ● Review, and make it perfect. ● Also, solve RELATED problems.
- 80. ● Write the simple code! ○ Less than 30 lines. ○ Make logics black box by functions! ○ In tree problem, implement by recursion! ○ Check other people’s optimized code! Practice, Practice, Practice!!!!
- 81. Practice, Practice, Practice!!!! ● Peer mock interview platform! ○ I interview you, you interview me. ○ Not only interview prep, but English speaking!!
- 82. Onsite Interview - 2019/01 ● 3 tech interviews. ● Got follow up problems. Solved well.
- 83. Offer
- 85. Offer!
- 86. Excercises
- 88. LRU Cache ● Hard to think about a implementation details during the interview.
- 89. LRU Cache ● Time complexity of std::list::erase?
- 90. LRU Cache ● Time complexity of std::list::erase? ○ https://en.cppreference.com/w/cpp/container/list/erase Constant O(last - first)
- 91. LRU Cache ● Deeper.. ○ Implement a list class including an erase method.
- 92. LRU Cache ● Implement a list class including an erase method. ○ Need to know about a list structure!!
- 93. Lowest Common Ancestor of binary tree ● https://leetcode.com/problems/lowest- common-ancestor-of-a-binary- tree/description/ ● Implement it recursively.
- 94. ● Implement it recursively. Lowest Common Ancestor of binary tree
- 95. ● Implement it recursively. Lowest Common Ancestor of binary tree Time complexity: O(n) Space complexity: O(1)
- 96. More problems ● 2sum ● Merge intervals ● Find the celebrity ● Valid parentheses
- 97. Wrap up
- 98. Wrapup ● Frustrating ● Tired ● Depressed ● Painful
- 99. Wrapup ● NOT FUCKING TALENTED. ● PRACTICE!
- 101. - Cao Hong (a.k.a 조홍) Ref: 三國志 曹操伝 (KOEI)
- 102. “Practice, Practice, Practice!!!!” - Soohan Ahn
- 103. Thanks!