Witeso

Rank	Topic	Frequency	Percentage
1	Array	103	55.1%
2	String	49	26.2%
3	Hash Table	41	21.9%
4	Two Pointers	30	16.0%
5	Sorting	29	15.5%
6	Math	28	15.0%
7	Dynamic Programming	25	13.4%
8	Greedy	19	10.2%
9	Binary Search	17	9.1%
10	Bit Manipulation	14	7.5%
11	Heap (Priority Queue)	14	7.5%
12	Matrix	12	6.4%
13	Stack	11	5.9%
14	Depth-First Search	10	5.3%
15	Simulation	9	4.8%
16	Divide and Conquer	8	4.3%
17	Backtracking	8	4.3%
18	Breadth-First Search	8	4.3%
19	Graph Theory	8	4.3%
20	Counting	8	4.3%
21	Prefix Sum	8	4.3%
22	Sliding Window	7	3.7%
23	Database	6	3.2%
24	Linked List	5	2.7%
25	Tree	5	2.7%
26	Design	5	2.7%
27	Topological Sort	5	2.7%
28	Binary Tree	5	2.7%
29	Union-Find	4	2.1%
30	Queue	3	1.6%
31	String Matching	3	1.6%
32	Enumeration	3	1.6%
33	Trie	2	1.1%
34	Recursion	2	1.1%
35	Memoization	2	1.1%
36	Bucket Sort	2	1.1%
37	Quickselect	2	1.1%
38	Ordered Set	2	1.1%
39	Binary Search Tree	1	0.5%
40	Geometry	1	0.5%
41	Rolling Hash	1	0.5%
42	Suffix Array	1	0.5%
43	Merge Sort	1	0.5%
44	Monotonic Stack	1	0.5%
45	Combinatorics	1	0.5%
46	Doubly-Linked List	1	0.5%
47	Hash Function	1	0.5%
48	Monotonic Queue	1	0.5%
49	Game Theory	1	0.5%
50	Eulerian Circuit	1	0.5%
51	Shortest Path	1	0.5%
52	Bitmask	1	0.5%

No.	Question Title	Link	Difficulty
1	Maximum Median Sum of Subsequences of Size 3	Visit	Medium
2	Find Product Recommendation Pairs	Visit	Medium
3	Minimum Operations to Make Columns Strictly Increasing	Visit	Easy
4	Report Spam Message	Visit	Medium
5	Minimum Length of String After Operations	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

Ibm Questions