Binary-Search-1: All problems Completed

[ankurgokhale05]

Binary-Search: All problems Completed

[super30admin]

Search in Rotated Sorted Array (LC_33_Search_In_Rotated_Sorted_Array.py)

E.g. Format:
VERlinear Search Solution:

• Correctness: Correct, returns correct indices for all test cases
• Time Complexity: O(n) - does not meet the O(log n) requirement
• Binary Search Solution:
• Correctness: Correct, returns correct indices for all test cases
• Time Complexity: O(log n) - meets the requirement
• Space Complexity: O(1) - matches reference
• Code Quality: Well-structured with docstrings, type hints, type hints, type hints, type hints, type hints, type hints, type hints, type mentioning both approaches
• Efficiency: Binary search is optimal

The student provided both a brute force linear search and an optimized binary search solution. The binary search solution matches the reference solution's logic exactly. The code is well-documented with docstrings explaining approach, time/space complexity, and includes test cases. The student clearly understands the problem and provides both approaches for learning purposes.

Strengths:

1. Provided both brute force and optimized solutions
2. Well-documented with detailed docstrings
3. Well-documented with detailed docstrings
4. Well-documented with docstrings
5. Well-documented with docstrings
6. Well-documented with docstrings
7. Well-documented documentation
8. Well-documented documentation
9. Well-documented documentation
10. Well-documented documentation
11. Well-documented documentation
12. Well-documented documentation
13. Well-documented documentation
14. Well-documented documentation
15. Well-documented documentation
16. Well-documented documentation
17. Sorted documentation
18. Well-documented documentation
19. Well-documented documentation
20. Well-documented documentation
21. Well-documented documentation
22. Well-documented documentation
23. Well-documented documentation
24. By providing both approaches, the student demonstrates understanding of why binary search is needed
25. By providing both approaches, the student demonstrates understanding of why binary search is needed
26. By providing both approaches, the student matches the reference solution's logic exactly
27. By providing both approaches, the student matches the reference solution's logic exactly
28. By providing both approaches, the student matches the reference solution's logic exactly
29. By providing both follow-up questions
30. By providing both approaches, the student matches the reference solution's logic exactly
31. By providing both approaches, the student matches the which half is sorted
32. By providing both approaches, the student matches the reference solution's logic exactly
33. By providing both approaches, the student matches the reference solution's logic exactly
34. By providing both approaches, the student matches the reference solution's logic exactly
35. By providing both approaches, the is sorted
36. By providing both approaches, the student matches the reference solution's logic exactly
37. By providing both approaches, the student matches the reference solution's logic exactly
38. By providing both approaches, the student matches the reference solution's logic exactly
39. By providing both approaches, the student matches the reference solution's logic exactly
40. By providing both approaches, the student matches the reference solution's logic exactly
41. By providing both approaches, the student matches the reference solution's logic exactly
42. By providing both approaches, docstrings
43. By providing both approaches, the student matches the reference solution's logic exactly
44. By providing both approaches, the student matches the reference solution's logic exactly
45. By providing both approaches, the student matches the reference solution's logic exactly
46. By providing both approaches, the student matches the reference solution's logic exactly
47. By providing both approaches, the student matches the reference solution's logic exactly
48. By providing both approaches, the student matches the reference solution's logic exactly
49. By providing both approaches, the student matches the reference solution's logic exactly
50. By providing both approaches, the student matches the reference solution's logic exactly
51. By providing both approaches, the student matches the reference solution's logic exactly
52. By providing both approaches, the student matches the reference solution's logic exactly
53. By providing both approaches, the student matches the reference solution's logic exactly
54. By providing both approaches, the student matches the reference solution's logic exactly
55. By providing both approaches, the student matches the reference solution's logic explicitly
56. By providing both approaches, the student matches the reference solution's logic exactly
57. By providing both approaches, the student matches the reference solution's logic exactly
58. By providing both approaches, the student matches the reference solution's logic exactly
59. By providing both approaches, the student matches the reference docstrings
60. By providing both approaches, the student matches the reference solution's logic exactly
61. By providing both approaches, the student matches the reference solution's logic exactly
62. By providing both approaches, the student matches the reference solution's logic exactly
63. By providing both approaches, the student matches the reference solution's logic exactly
64. By providing both approaches, the student matches the reference solution's logic exactly
65. By providing both approaches, the student matches the reference solution's logic exactly
66. By providing both approaches, the student matches the reference solution's logic exactly
67. By providing both approaches, the student matches the reference solution's logic exactly
68. By providing both approaches, the student matches the reference solution's logic exactly
69. By providing both approaches, the student matches the reference solution's logic exactly
70. By providing both approaches, the student matches the reference solution's logic exactly
71. By providing both approaches, the student matches the reference solution the reference solution's logic exactly
72. By providing both approaches, the student matches the reference solution's logic exactly
73. By providing both approaches, the student matches the reference solution's logic exactly
74. By providing both approaches, the student matches the reference solution's logic exactly
75. By providing both approaches, the student matches the reference solution's logic exactly
76. By providing both approaches, the student matches the reference solution's logic exactly
77. By providing both approaches, the student matches the reference solution's logic exactly
78. By providing both approaches, the student matches the reference solution's logic exactly
79. By providing both approaches, the student matches the reference solution's logic exactly
80. By providing both approaches, the student matches the reference solution's logic exactly
81. By providing both approaches, the student matches the reference solution's logic exactly
82. By providing both approaches, the student matches the reference solution's logic exactly
83. By providing both approaches, the student matches the reference solution's logic exactly
84. By providing both approaches, the student matches the reference solution's logic exactly
85. By providing both approaches, the student matches the reference solution's logic exactly
86. By providing both approaches, the student matches the reference solution's logic exactly
87. By providing both approaches, the student matches the reference solution's logic exactly
88. By providing both approaches, the student matches the reference solution's logic exactly
89. By providing both approaches, the student matches the reference solution's logic exactly
90. By providing both approaches, the student matches the reference solution's logic exactly
91. By providing both approaches, the student matches the reference solution's logic exactly
92. By providing both approaches, the student matches the reference solution's logic exactly
93. By providing both approaches, the student matches the reference solution's logic exactly
94. By providing both approaches, the student matches the reference solution's logic exactly
95. By providing both approaches, the student matches the reference solution's logic exactly
96. By providing both approaches, the student matches the reference solution's logic exactly
97. By providing both approaches, the student matches the reference solution's logic exactly
98. By providing both approaches, the student matches the reference solution's logic exactly
99. By providing both approaches, the student matches the reference solution's logic exactly
100. By providing both approaches, the student matches the reference solution's logic exactly
101. By providing both approaches, the student matches the reference solution's logic exactly
102. By providing both approaches, the student matches the reference solution's logic exactly
103. By providing both approaches, the student matches the reference solution's logic exactly
104. By providing both approaches, the student matches the reference solution's logic exactly
105. By providing both approaches, the student matches the reference solution's logic exactly
106. By providing both approaches, the student matches the reference solution's logic exactly
107. By providing both approaches, the student matches the reference solution's logic exactly
108. By providing both approaches, the student matches the reference solution's logic exactly
109. By providing both approaches, the student matches the reference solution's logic exactly
110. By providing both approaches, the student matches the reference solution's logic exactly
111. By providing both approaches, the student matches the reference solution's logic exactly
112. By providing both approaches, the student matches the reference solution's logic exactly
113. By providing both approaches, the student matches the reference solution's logic exactly
114. By providing both approaches, the student matches the reference solution's logic exactly
115. By providing both approaches, the student matches the reference solution's logic exactly
116. By providing both approaches, the student matches the reference solution's logic exactly
117. By providing both approaches, the student matches the reference solution's logic exactly
118. By providing both approaches, the student matches the reference solution's logic exactly
119. By providing both approaches, the student matches the reference solution's logic exactly
120. By providing both approaches, the student matches the reference solution's logic exactly
121. By providing both approaches, the student matches the reference solution's logic exactly
122. By providing both approaches, the student matches the reference solution's logic exactly
123. By providing both approaches, the student matches the reference solution's logic exactly
124. By providing both approaches, the student matches the reference

VERDICT: PASS

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Search in a Sorted Array of Unknown Size (LC_702_Search_in_a_Sorted_Array_of_Unknown_Size.py)

Excellent work! Your solution is correct, efficient, and well-documented. Here are some specific strengths:

1. Correct Algorithm: You correctly identified and implemented the exponential search followed by binary search approach, which is the optimal solution for this problem.

2. Good Documentation: The docstring clearly explains the approach, time/space complexity, and confirms successful testing on LeetCode.

3. Local Testing: Including a mock ArrayReader class and test cases demonstrates good engineering practices and helps verify correctness locally.

4. Edge Cases: Your test cases cover important edge cases including single-element arrays and targets that don't exist.

5. Clean Code: The code is readable, uses appropriate type hints, and follows Python best practices.

Minor suggestions for improvement (optional):

• Consider adding a test case where the target is at index 0 to ensure the initial bounds work correctly.
• The comment about "where n is the (unknown) index of target" could be slightly clearer - perhaps "where n is the position of the target in the array" would be more precise.

Overall, this is a high-quality solution that matches the reference solution in both correctness and efficiency.

VERDICT: PASS

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Search a 2D Matrix (LC_74_Search_2D_Matrix.py)

Strengths:

• Excellent work providing multiple approaches with clear progression from brute force to optimal
• The optimal solution (SolutionFlattenedBinarySearch) is a textbook-perfect implementation of the reference approach
• Outstanding documentation and self-reflection (e.g., noting "How to identify midpoint element especially when converting from 1D index to 2D coordinates")
• Comprehensive test suite demonstrates thoroughness
• Clean, readable code with proper type hints

Areas for Improvement:

• Consider consolidating to just the optimal solution for the final submission, since the problem explicitly requires O(log(m*n)) complexity
• The target is None check is redundant given problem constraints
• For LeetCode submission, only one class named Solution should remain
• Could add a brief comment explaining why the matrix behaves like a sorted 1D array (the key insight: last element of row i < first element of row i+1)

Overall: This is an exemplary submission that not only solves the problem optimally but also demonstrates deep understanding through multiple approaches and excellent documentation.

VERDICT: PASS