60+ Leetcode Problem asked in Oracle in last 6 months

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Some problem were asked exactly same as available on Leetcode and some of them were similar or variations of the problems available.


Easy Problems –

  1. Design HashMap – Link
  2. Remove Duplicates from Sorted Array – Link
  3. Move Zeroes – Link
  4. Longest Common Prefix – Link
  5. Implement strStr() – Link
  6. Valid Anagram – Link
  7. Best Time to Buy and Sell Stock – Link
  8. Maximum Subarray – Link
  9. Two Sum – Link
  10. Diameter of Binary Tree – Link
  11. Range Sum of BST – Link
  12. Count Primes – Link
  13. Add Strings – Link
  14. Middle of the Linked List – Link
  15. Symmetric Tree – Link

Medium Problems –

  1. Design Hit Counter – Link
  2. Merge Intervals – Link
  3. Basic Calculator II – Link
  4. Web Crawler – Link
  5. Exclusive Time of Functions – Link
  6. Web Crawler Multithreaded – Link
  7. Merge Intervals – Link
  8. Reverse Substrings Between Each Pair of Parentheses – Link
  9. Design Twitter – Link
  10. LRU Cache – Link
  11. Pow(x, n) – Link
  12. Reverse Words in a String – Link
  13. Longest Substring Without Repeating Characters – Link
  14. Course Schedule II – Link
  15. Search in Rotated Sorted Array – Link
  16. String to Integer (atoi) – Link
  17. Group Anagrams – Link
  18. Letter Combinations of a Phone Number – Link
  19. Copy List with Random Pointer – Link
  20. Binary Tree Right Side View – Link
  21. Unique Paths – Link
  22. Kth Smallest Element in a BST – Link
  23. Flatten Binary Tree to Linked List – Link
  24. Search a 2D Matrix II – Link
  25. 3Sum – Link
  26. Word Break – Link
  27. Binary Search Tree Iterator – Link
  28. Decode String – Link
  29. Find All Anagrams in a String – Link
  30. Meeting Rooms II – Link
  31. Top K Frequent Elements – Link
  32. Longest Palindromic Substring – Link
  33. Path Sum II – Link
  34. Reverse Linked List II – Link
  35. Find First and Last Position of Element in Sorted Array – Link

Hard Problems –

  1. Median of Two Sorted Arrays – Link
  2. Trapping Rain Water – Link
  3. Regular Expression Matching – Link
  4. Sliding Window Maximum – Link
  5. Sudoku Solver – Link
  6. Merge k Sorted Lists – Link
  7. Longest Duplicate Substring – Link
  8. Word Break II – Link
  9. Regular Expression Matching – Link
  10. Sliding Window Maximum – Link

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