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Oracle Questions

Here are the LeetCode questions for Oracle.

Total: 422
Easy: 97
Medium: 250
Hard: 75
Progress: 0%

Topic Frequency Analysis

All Topics

Rank Topic Frequency Percentage
1 Array 212
50.2%
2 String 111
26.3%
3 Hash Table 100
23.7%
4 Depth-First Search 63
14.9%
5 Dynamic Programming 60
14.2%
6 Math 53
12.6%
7 Sorting 53
12.6%
8 Breadth-First Search 50
11.8%
9 Tree 49
11.6%
10 Two Pointers 47
11.1%
11 Binary Tree 43
10.2%
12 Binary Search 41
9.7%
13 Stack 37
8.8%
14 Matrix 36
8.5%
15 Linked List 31
7.3%
16 Greedy 30
7.1%
17 Design 26
6.2%
18 Heap (Priority Queue) 21
5.0%
19 Backtracking 19
4.5%
20 Divide and Conquer 16
3.8%
21 Bit Manipulation 16
3.8%
22 Recursion 16
3.8%
23 Union-Find 15
3.6%
24 Simulation 14
3.3%
25 Prefix Sum 14
3.3%
26 Graph Theory 13
3.1%
27 Monotonic Stack 13
3.1%
28 Counting 13
3.1%
29 Binary Search Tree 11
2.6%
30 Database 11
2.6%
31 Sliding Window 10
2.4%
32 Trie 9
2.1%
33 Topological Sort 8
1.9%
34 Queue 8
1.9%
35 Ordered Set 8
1.9%
36 Memoization 6
1.4%
37 Enumeration 6
1.4%
38 Segment Tree 5
1.2%
39 Data Stream 5
1.2%
40 Hash Function 5
1.2%
41 Binary Indexed Tree 4
0.9%
42 Merge Sort 4
0.9%
43 Rolling Hash 3
0.7%
44 Doubly-Linked List 3
0.7%
45 Iterator 3
0.7%
46 Quickselect 3
0.7%
47 Randomized 3
0.7%
48 Brainteaser 2
0.5%
49 Concurrency 2
0.5%
50 String Matching 2
0.5%
51 Bucket Sort 2
0.5%
52 Number Theory 2
0.5%
53 Shell 1
0.2%
54 Combinatorics 1
0.2%
55 Radix Sort 1
0.2%
56 Monotonic Queue 1
0.2%
57 Game Theory 1
0.2%
58 Shortest Path 1
0.2%
59 Bitmask 1
0.2%
60 Probability and Statistics 1
0.2%
No. Question Title Link Difficulty Solved
1 Word Squares II Visit Medium
2 Generate Schedule Visit Medium
3 Minimum Cost Path with Edge Reversals Visit Medium
4 Find Valid Pair of Adjacent Digits in String Visit Easy
5 Minimum Array Sum Visit Medium
6 Restricted Restricted Hard
7 Restricted Restricted Hard
8 Restricted Restricted Hard
9 Restricted Restricted Hard
10 Restricted Restricted Hard
11 Restricted Restricted Hard
12 Restricted Restricted Hard
13 Restricted Restricted Hard
14 Restricted Restricted Hard
15 Restricted Restricted Hard

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Frequently Asked Questions

Common questions about Oracle interviews