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Oracle Questions

Here are the LeetCode questions for Oracle.

Total: 416
Easy: 95
Medium: 247
Hard: 74
Progress: 0%

Topic Frequency Analysis

All Topics

Rank Topic Frequency Percentage
1 Array 208
50.0%
2 String 111
26.7%
3 Hash Table 99
23.8%
4 Depth-First Search 61
14.7%
5 Dynamic Programming 59
14.2%
6 Sorting 53
12.7%
7 Math 52
12.5%
8 Breadth-First Search 49
11.8%
9 Tree 48
11.5%
10 Two Pointers 47
11.3%
11 Binary Tree 42
10.1%
12 Binary Search 41
9.9%
13 Stack 36
8.7%
14 Matrix 34
8.2%
15 Linked List 30
7.2%
16 Greedy 29
7.0%
17 Design 26
6.3%
18 Heap (Priority Queue) 21
5.0%
19 Backtracking 19
4.6%
20 Divide and Conquer 16
3.8%
21 Bit Manipulation 16
3.8%
22 Recursion 15
3.6%
23 Union-Find 14
3.4%
24 Prefix Sum 14
3.4%
25 Graph Theory 13
3.1%
26 Simulation 13
3.1%
27 Counting 13
3.1%
28 Monotonic Stack 12
2.9%
29 Binary Search Tree 11
2.6%
30 Database 11
2.6%
31 Sliding Window 10
2.4%
32 Trie 9
2.2%
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
1.0%
42 Merge Sort 4
1.0%
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 Shell 1
0.2%
53 Combinatorics 1
0.2%
54 Radix Sort 1
0.2%
55 Number Theory 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 Minimum Cost Path with Edge Reversals Visit Medium
3 Find Valid Pair of Adjacent Digits in String Visit Easy
4 Minimum Array Sum Visit Medium
5 Count the Number of Houses at a Certain Distance II Visit Hard
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