Apple top 100 questions

Apple top 100 questions based on the Leetcode frequency (specific to Apple frequency).

Last curated on : 01/01/2022

1. [E] https://leetcode.com/problems/two-sum
2. [E] https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
3. [M] https://leetcode.com/problems/3sum/
4. [E] https://leetcode.com/problems/longest-common-prefix/
5. [M] https://leetcode.com/problems/longest-substring-without-repeating-characters/
6. [H] https://leetcode.com/problems/median-of-two-sorted-arrays/
7. [E] https://leetcode.com/problems/maximum-subarray/
8. [M] https://leetcode.com/problems/add-two-numbers/
9. [M] https://leetcode.com/problems/number-of-islands/
10. [M] https://leetcode.com/problems/reverse-integer/
11. [M] https://leetcode.com/problems/lru-cache/
12. [E] https://leetcode.com/problems/move-zeroes/
13. [E] https://leetcode.com/problems/valid-parentheses/
14. [M] https://leetcode.com/problems/valid-sudoku/
15. [M] https://leetcode.com/problems/merge-intervals/
16. [E] https://leetcode.com/problems/happy-number/
17. [M] https://leetcode.com/problems/product-of-array-except-self/
18. [M] https://leetcode.com/problems/decode-string/
19. [M] https://leetcode.com/problems/longest-palindromic-substring/
20. [M] https://leetcode.com/problems/container-with-most-water/
21. [M] https://leetcode.com/problems/search-in-rotated-sorted-array/
22. [M] https://leetcode.com/problems/combination-sum/
23. [M] https://leetcode.com/problems/rotate-image/
24. [M] https://leetcode.com/problems/spiral-matrix/
25. [M] https://leetcode.com/problems/unique-paths/
26. [M] https://leetcode.com/problems/reverse-linked-list-ii/
27. [H] https://leetcode.com/problems/word-ladder/
28. [M] https://leetcode.com/problems/word-break/
29. [M] https://leetcode.com/problems/find-the-celebrity/
30. [M] https://leetcode.com/problems/random-pick-with-weight/
31. [E] https://leetcode.com/problems/roman-to-integer/
32. [M] https://leetcode.com/problems/letter-combinations-of-a-phone-number/
33. [M] https://leetcode.com/problems/generate-parentheses/
34. [H] https://leetcode.com/problems/merge-k-sorted-lists/
35. [M] https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
36. [M] https://leetcode.com/problems/powx-n/
37. [M] https://leetcode.com/problems/sort-colors/
38. [E] https://leetcode.com/problems/valid-palindrome/
39. [E] https://leetcode.com/problems/min-stack/
40. [M] https://leetcode.com/problems/house-robber/
41. [E] https://leetcode.com/problems/first-bad-version/
42. [H] https://leetcode.com/problems/find-median-from-data-stream/
43. [M] https://leetcode.com/problems/remove-duplicate-letters/
44. [M] https://leetcode.com/problems/valid-parenthesis-string/
45. [M] https://leetcode.com/problems/max-consecutive-ones-iii/
46. [E] https://leetcode.com/problems/design-hashmap/
47. [E] https://leetcode.com/problems/palindrome-number/
48. [H] https://leetcode.com/problems/regular-expression-matching/
49. [M] https://leetcode.com/problems/integer-to-roman/
50. [E] https://leetcode.com/problems/merge-two-sorted-lists/
51. [E] https://leetcode.com/problems/remove-duplicates-from-sorted-array/
52. [H] https://leetcode.com/problems/sudoku-solver/
53. [H] https://leetcode.com/problems/first-missing-positive/
54. [M] https://leetcode.com/problems/multiply-strings/
55. [M] https://leetcode.com/problems/group-anagrams/
56. [H] https://leetcode.com/problems/longest-valid-parentheses/
57. [M] https://leetcode.com/problems/word-search/
58. [E] https://leetcode.com/problems/merge-sorted-array/
59. [E] https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
60. [E] https://leetcode.com/problems/pascals-triangle/
61. [M] https://leetcode.com/problems/maximum-product-subarray/
62. [E] https://leetcode.com/problems/majority-element/
63. [M] https://leetcode.com/problems/rotate-array/
64. [E] https://leetcode.com/problems/count-primes/
65. [H] https://leetcode.com/problems/word-search-ii/
66. [H] https://leetcode.com/problems/count-of-smaller-numbers-after-self/
67. [M] https://leetcode.com/problems/flatten-nested-list-iterator/
68. [M] https://leetcode.com/problems/top-k-frequent-elements/
69. [H] https://leetcode.com/problems/frog-jump/
70. [M] https://leetcode.com/problems/next-greater-element-ii/
71. [M] https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/
72. [M] https://leetcode.com/problems/insert-delete-getrandom-o1/
73. [E] https://leetcode.com/problems/reverse-words-in-a-string-iii/
74. [E] https://leetcode.com/problems/middle-of-the-linked-list/
75. [M] https://leetcode.com/problems/3sum-closest
76. [M] https://leetcode.com/problems/4sum
77. [M] https://leetcode.com/problems/permutations/
78. [H] https://leetcode.com/problems/n-queens/
79. [M] https://leetcode.com/problems/minimum-path-sum/
80. [E] https://leetcode.com/problems/sqrtx/
81. [E] https://leetcode.com/problems/climbing-stairs
82. [M] https://leetcode.com/problems/set-matrix-zeroes/
83. [H] https://leetcode.com/problems/largest-rectangle-in-histogram/
84. [H] https://leetcode.com/problems/maximal-rectangle
85. [E] https://leetcode.com/problems/symmetric-tree/
86. [M] https://leetcode.com/problems/binary-tree-level-order-traversal/
87. [E] https://leetcode.com/problems/maximum-depth-of-binary-tree/
88. [M] https://leetcode.com/problems/longest-consecutive-sequence/
89. [H] https://leetcode.com/problems/word-break-ii/
90. [E] https://leetcode.com/problems/intersection-of-two-linked-lists/
91. [M] https://leetcode.com/problems/course-schedule/
92. [M] https://leetcode.com/problems/implement-trie-prefix-tree/
93. [E] https://leetcode.com/problems/contains-duplicate/
94. [M] https://leetcode.com/problems/maximal-square/
95. [M] https://leetcode.com/problems/basic-calculator-ii/
96. [M] https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
97. [E] https://leetcode.com/problems/delete-node-in-a-linked-list/
98. [M] https://leetcode.com/problems/search-a-2d-matrix-ii/
99. [H] https://leetcode.com/problems/integer-to-english-words/
100. [M] https://leetcode.com/problems/h-index/

P.S : Credits goes to Leetcode frequency and who tagged these as real interview questions from Apple. I just re-arranged based on the Apple specific asked frequency.