problems

1. https://leetcode.com/problems/xor-operation-in-an-array
2. https://leetcode.com/problems/power-of-two
3. https://leetcode.com/problems/binary-search
4. https://leetcode.com/problems/perfect-number
5. https://leetcode.com/problems/single-number
6. https://leetcode.com/problems/number-of-1-bits
7. https://leetcode.com/problems/maximum-average-subarray-i
8. https://leetcode.com/problems/valid-anagram
9. https://leetcode.com/problems/sort-characters-by-frequency
10. https://leetcode.com/problems/roman-to-integer
11. https://leetcode.com/problems/reverse-words-in-a-string
12. https://leetcode.com/problems/hamming-distance
13. https://leetcode.com/problems/maximum-nesting-depth-of-the-parentheses
14. https://leetcode.com/problems/missing-number
15. https://leetcode.com/problems/max-consecutive-ones
16. https://leetcode.com/problems/find-missing-and-repeated-values
17. https://leetcode.com/problems/string-to-integer-atoi
18. https://leetcode.com/problems/merge-strings-alternately
19. https://leetcode.com/problems/pascals-triangle
20. https://leetcode.com/problems/pascals-triangle-ii
21. https://leetcode.com/problems/delete-node-in-a-linked-list
22. https://leetcode.com/problems/rotate-list
23. https://leetcode.com/problems/merge-two-sorted-lists
24. https://leetcode.com/problems/maximum-depth-of-binary-tree

---

1. https://leetcode.com/problems/minimum-bit-flips-to-convert-number
2. https://leetcode.com/problems/remove-outermost-parentheses
3. https://leetcode.com/problems/isomorphic-strings
4. https://leetcode.com/problems/lemonade-change
5. https://leetcode.com/problems/add-binary
6. https://leetcode.com/problems/single-number-ii/
7. https://leetcode.com/problems/subsets/
8. https://leetcode.com/problems/single-number-iii/
9. https://leetcode.com/problems/subarray-sum-equals-k/
10. https://leetcode.com/problems/finding-pairs-with-a-certain-sum/
11. https://leetcode.com/problems/majority-element/
12. https://leetcode.com/problems/maximum-subarray/
13. https://leetcode.com/problems/count-prefixes-of-a-given-string
14. https://leetcode.com/problems/remove-duplicates-from-sorted-array/
15. https://leetcode.com/problems/move-zeroes/
16. https://leetcode.com/problems/apply-operations-to-an-array/
17. https://leetcode.com/problems/longest-harmonious-subsequence/
18. https://leetcode.com/problems/maximum-twin-sum-of-a-linked-list/
19. https://leetcode.com/problems/add-two-numbers/
20. https://leetcode.com/problems/divide-two-integers/description/
21. https://leetcode.com/problems/find-the-maximum-divisibility-score/
22. https://leetcode.com/problems/search-insert-position/
23. https://leetcode.com/problems/smallest-pair-with-different-frequencies/
24. https://leetcode.com/problems/assign-cookies/
25. https://leetcode.com/problems/candy/
26. https://leetcode.com/problems/gcd-of-odd-and-even-sums/
27. https://leetcode.com/problems/find-numbers-with-even-number-of-digits/
28. https://leetcode.com/problems/linked-list-cycle-ii/
29. https://leetcode.com/problems/linked-list-cycle/
30. https://leetcode.com/problems/middle-of-the-linked-list/
31. https://leetcode.com/problems/remove-nth-node-from-end-of-list/
32. https://leetcode.com/problems/delete-the-middle-node-of-a-linked-list/
33. https://leetcode.com/problems/search-in-rotated-sorted-array-ii
34. https://leetcode.com/problems/odd-even-linked-list
35. https://leetcode.com/problems/sort-array-by-parity
36. https://leetcode.com/problems/longest-substring-without-repeating-characters/
37. https://leetcode.com/problems/fruit-into-baskets/
38. https://leetcode.com/problems/minimum-size-subarray-sum/
39. https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/
40. https://leetcode.com/problems/sort-colors/
41. https://leetcode.com/problems/rotate-array/
42. https://leetcode.com/problems/check-if-array-is-sorted-and-rotated/
43. https://leetcode.com/problems/reverse-linked-list/
44. https://leetcode.com/problems/weighted-word-mapping/
45. https://leetcode.com/problems/two-sum/
46. https://leetcode.com/problems/replace-elements-with-greatest-element-on-right-side/
47. https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
48. https://leetcode.com/problems/search-in-a-binary-search-tree/
49. https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/
50. https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold/
51. https://leetcode.com/problems/single-element-in-a-sorted-array/
52. https://leetcode.com/problems/search-in-rotated-sorted-array/
53. https://leetcode.com/problems/koko-eating-bananas/
54. https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
55. https://leetcode.com/problems/frequency-of-the-most-frequent-element/
56. https://leetcode.com/problems/valid-palindrome/
57. https://leetcode.com/problems/binary-tree-inorder-traversal/
58. https://leetcode.com/problems/binary-tree-preorder-traversal/
59. https://leetcode.com/problems/fibonacci-number/
60. https://leetcode.com/problems/combine-two-tables/
61. https://leetcode.com/problems/min-cost-climbing-stairs/
62. https://leetcode.com/problems/climbing-stairs/
63. https://leetcode.com/problems/jump-game/
64. https://leetcode.com/problems/sleep/
65. https://leetcode.com/problems/allow-one-function-call/
66. https://leetcode.com/problems/function-composition/
67. https://leetcode.com/problems/return-length-of-arguments-passed/
68. https://leetcode.com/problems/array-reduce-transformation/
69. https://leetcode.com/problems/add-two-promises/
70. https://leetcode.com/problems/filter-elements-from-array/
71. https://leetcode.com/problems/is-object-empty/
72. https://leetcode.com/problems/big-countries/
73. https://leetcode.com/problems/apply-transform-over-each-element-in-array/
74. https://leetcode.com/problems/to-be-or-not-to-be/
75. https://leetcode.com/problems/counter-ii/
76. https://leetcode.com/problems/counter/
77. https://leetcode.com/problems/create-hello-world-function/
78. https://leetcode.com/problems/sum-of-left-leaves/
79. https://leetcode.com/problems/sort-an-array/
80. https://leetcode.com/problems/implement-stack-using-queues/
81. https://leetcode.com/problems/powx-n
82. https://leetcode.com/problems/number-of-provinces/
83. https://leetcode.com/problems/insert-into-a-binary-search-tree/
84. https://leetcode.com/problems/palindrome-linked-list/
85. https://leetcode.com/problems/rotate-list/
86. https://leetcode.com/problems/find-peak-element/
87. https://leetcode.com/problems/binary-tree-postorder-traversal/
88. https://leetcode.com/problems/search-a-2d-matrix/
89. https://leetcode.com/problems/rearrange-array-elements-by-sign/
90. https://leetcode.com/problems/majority-element-ii/
91. https://leetcode.com/problems/maximum-product-subarray/
92. https://leetcode.com/problems/palindrome-number/
93. https://leetcode.com/problems/reverse-integer/
94. https://leetcode.com/problems/coin-change/
95. https://leetcode.com/problems/power-of-four/
96. https://leetcode.com/problems/isomorphic-strings/
97. https://leetcode.com/problems/longest-common-prefix/
98. https://leetcode.com/problems/largest-odd-number-in-string/
99. https://leetcode.com/problems/arranging-coins/
100. https://leetcode.com/problems/merge-sorted-array/
101. https://leetcode.com/problems/rotate-string/
102. https://leetcode.com/problems/longest-consecutive-sequence/
103. https://leetcode.com/problems/sum-of-two-integers/
104. https://leetcode.com/problems/valid-parenthesis-string/
105. https://leetcode.com/problems/merge-intervals/
106. https://leetcode.com/problems/non-overlapping-intervals/
107. https://leetcode.com/problems/longest-palindrome/
108. https://leetcode.com/problems/longest-increasing-subsequence/
109. https://leetcode.com/problems/longest-common-subsequence/
110. https://leetcode.com/problems/set-matrix-zeroes/
111. https://leetcode.com/problems/rotate-image/
112. https://leetcode.com/problems/generate-binary-strings-without-adjacent-zeros/
113. https://leetcode.com/problems/max-consecutive-ones-iii/description/
114. https://leetcode.com/problems/longest-repeating-character-replacement/description/
115. https://leetcode.com/problems/remove-linked-list-elements/