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TitleTopicsAcceptanceSolutionDifficulty
1. Reverse Words In A String

String

47.80% Easy
2. First Occurrence In A String

String

50.08% Medium
3. Distinct Paths II

Array

Recursion

Dynamic Programming

2D Array

50.00% Medium
4. Minimum Path Sum

Array

Dynamic Programming

2D Array

50.00% Medium
5. Distinct Paths

Array

Recursion

Dynamic Programming

2D Array

50.00% Medium
6. Rod Cutting

Array

Dynamic Programming

50.00% Medium
7. 0-1 Knapsack Problem

Array

Dynamic Programming

50.00% Medium
8. Longest Increasing Subsequence

Array

Dynamic Programming

20.00% Medium
9. Longest Common Subsequence

Array

String

Dynamic Programming

50.00% Medium
10. Number of Turns in Binary Tree

Tree

50.00% Hard
11. Binary Tree Maximum Path Sum

Tree

50.00% Hard
12. Find Largest Value in Each Tree Row

Tree

50.00% Medium
13. Tree Path Sum

Tree

50.00% Medium
14. Cake Distribution Problem

Array

Searching Algorithms

64.62% Hard
15. Lowest Common Ancestor of a Binary Tree

Tree

50.00% Medium
16. Level Order Traversal of Binary Tree

Tree

50.00% Medium
17. Inorder Traversal Of Binary Tree

Tree

50.00% Easy
18. Preorder Traversal Of Binary Tree

Tree

50.00% Easy
19. Postorder Traversal Of Binary Tree

Tree

50.00% Easy
20. Height of Binary Tree

Tree

50.00% Easy
21. Same Binary Tree

Tree

50.00% Easy
22. Maximum Width of Binary Tree

Tree

50.00% Easy
23. Mirror Binary Tree

Tree

50.00% Easy
24. Search Insert Position

Array

Sorting Algorithms

48.03% Easy
25. 3 Sum

Array

Sorting Algorithm

35.80% Medium
26. K-Pangrams

String

Hashing

20.91% Medium
27. Winner of an election

String

Hashing

53.75% Easy
28. Making A Large Island

Graph

BFS

DFS

52.36% Hard
29. Stepping Numbers

BFS

DFS

48.44% Medium
30. Course Schedule

Graph

BFS

DFS

51.77% Medium
31. You and your books

Array

Dynamic Programming

50.00% Easy
32. Maximize dot product

Dynamic Programming

13.27% Medium
33. Stock buy and sell

Array

Dynamic Programming

29.18% Medium
34. Next Smallest Palindrome

Array

19.63% Hard
35. Count Smaller elements

Array

38.16% Hard
36. Redundant Parenthesis

String

Stack

51.49% Hard
37. Find the String

String

72.98% Hard
38. Alien Dictionary

String

47.81% Hard
39. Bitonic Point

Searching Algorithm

58.67% Easy
40. Pair Sum Closest to 0

Searching Algorithms

19.61% Easy
41. Super Primes

Searching Algorithms

24.90% Medium
42. Smallest factorial number

Searching Algorithms

38.79% Medium
43. Find Transition Point

Array

Searching Algorithms

37.90% Easy
44. Insertion Sort

Sorting Algorithms

66.61% Easy
45. Quick Sort

Sorting Algorithms

55.23% Medium
46. Maximum Meetings in One Room

Array

Sorting Algorithms

33.57% Medium
47. Number of Pairs

Sorting Algorithms

21.82% Medium
48. Shop in Candy Store

Sorting Algorithms

45.43% Easy
49. Floor in a Sorted Array

Sorting Algorithms

33.75% Easy
50. Minimum sum

Array

Sorting Algorithms

17.14% Medium
51. Print Pattern

Recursion

56.39% Easy
52. Tower of Hanoi

Recursion

35.23% Medium
53. Power Of Numbers

Recursion

20.22% Medium
54. Heap Sort

Heap

53.06% Medium
55. Binary Heap Operations

Heap

22.30% Medium
56. Game with String

Heap

53.96% Medium
57. Kth largest element

Heap

64.92% Medium
58. Word Search

Recursion

32.69% Medium
59. Subset Sums

Recursion

72.55% Medium
60. Sort a stack

Recursion

69.19% Medium
61. Reverse First K elements of Queue

Queue

81.28% Medium
62. Interleave the First Half of the Queue with Second Half

Queue

69.35% Medium
63. First non-repeating in a stream

Queue

31.65% Medium
64. Minimum Cost of Ropes

Queue

42.73% Medium
65. Queue using Linked List

Queue

45.60% Easy
66. Implement Queue using Arrays

Queue

47.24% Basic
67. Histogram Max Rectangular Area

Stack

32.12% Hard
68. Convert Infix To Prefix Notation

Stack

52.94% Medium
69. Asteroid Collision

Stack

50.06% Medium
70. Implement Min Stack

Stack

22.59% Medium
71. Check for balanced Paranthesis

Stack

28.56% Easy
72. Number of NGEs to the right

Stack

56.74% Medium
73. Implement Stack using Linked List

Stack

53.98% Easy
74. Implement Stack Using Array

Stack

54.76% Basic
75. Flattening a Linked List

Linked List

51.53% Medium
76. Categorize even and odd nodes in a Linked List

Linked List

49.80% Medium
77. Merge Sort for Linked List

Linked List

74.76% Medium
78. Reverse a Linked List in Groups

Linked List

57.08% Medium
79. Intersection of Two Linked Lists

Linked List

35.30% Easy
80. Palindrome Linked List

Linked List

41.48% Medium
81. Detect Loop in linked list

Linked List

43.49% Medium
82. Kth from End of Linked List

Linked List

47.30% Medium
83. Merge Two Sorted Lists

Linked List

65.70% Medium
84. Reverse a Linked List

Linked List

78.10% Easy
85. Roman Number to Integer

String

43.21% Easy
86. Longest Palindromic Substring

String

34.80% Medium
87. Remove Duplicates From A String

String

Stack

61.68% Easy
88. Find Kth Rotation

Array

Stack

Searching Algorithm

23.16% Easy
89. Merge Sorted Arrays

Array

Sorting Algorithms

32.01% Easy
90. 2Sum - Pair With Given Sum

Array

Hashing

Hashmap

30.61% Easy
91. Missing In Array

Array

Searching Algorithms

29.59% Easy
92. Maximum Product Of Two Numbers

Array

Sorting Algorithms

81.34% Basic
93. Maximum Subarray Sum

Array

36.28% Medium
94. Strings Rotations

String

43.83% Medium
95. Unique Permutations

String

46.50% Medium
96. Missing And Repeating

Array

24.83% Easy
97. Search In Rotated Sorted Array

Array

Searching Algorithms

37.64% Medium
98. Form Anagram Groups

String

Hashing

69.80% Medium
99. Longest Common Prefix

Array

String

44.20% Easy
100. Count Inversions

Array

Sorting Algorithms

16.93% Medium
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