Bloomberg Coding Interview Questions

We track 1172 coding questions asked at Bloomberg, tagged with the algorithms and concepts they test. The most common: Array, String, Hash Table, Math, Dynamic Programming.

Browse all 1172 Bloomberg questions →

How many questions involve each concept

Share of all 1172 tracked Bloomberg questions that touch each concept. Questions usually involve several, so these overlap.

Where Bloomberg differs from the average company

Concept weight at Bloomberg relative to the average across all companies we track. Green means Bloomberg leans on it harder than most.

Bloomberg specialties

Concepts that show up at Bloomberg but are rarely asked elsewhere. They are easy to get blindsided by.

Difficulty mix

Level split of the 1172 tracked Bloomberg questions.

Junior33% (392)
Mid/Senior53% (624)
Staff13% (156)

Every concept in Bloomberg interviews

Concept	Questions	% of questions	Share of mix
Array	614	52.4%	18.8%
String	253	21.6%	8.6%
Hash Table	248	21.2%	6.2%
Math	180	15.4%	6.5%
Dynamic Programming	169	14.4%	5.5%
Sorting	165	14.1%	3.8%
Greedy	112	9.6%	2.9%
Two Pointers	109	9.3%	3.1%
Binary Search	107	9.1%	2.8%
Depth-First Search	106	9.0%	2.3%
Breadth-First Search	85	7.3%	1.8%
Matrix	82	7.0%	2.0%
Tree	82	7.0%	1.8%
Stack	80	6.8%	2.2%
Binary Tree	79	6.7%	1.7%
Heap (Priority Queue)	71	6.1%	1.4%
Bit Manipulation	69	5.9%	2.3%
Prefix Sum	68	5.8%	1.8%
Simulation	68	5.8%	2.0%
Database	63	5.4%	5.5%
Sliding Window	61	5.2%	1.5%
Linked List	53	4.5%	2.1%
Counting	51	4.4%	1.2%
Backtracking	48	4.1%	1.5%
Design	38	3.2%	0.9%
Graph Theory	36	3.1%	0.8%
Recursion	33	2.8%	1.0%
Divide and Conquer	32	2.7%	0.7%
Monotonic Stack	28	2.4%	0.6%
Enumeration	25	2.1%	0.7%
Union-Find	24	2.0%	0.5%
Binary Search Tree	21	1.8%	0.4%
Queue	19	1.6%	0.4%
Trie	17	1.5%	0.3%
Ordered Set	16	1.4%	0.3%
Memoization	14	1.2%	0.3%
String Matching	13	1.1%	0.4%
Geometry	12	1.0%	0.3%
Segment Tree	12	1.0%	0.2%
Hash Function	10	0.9%	0.2%
Number Theory	10	0.9%	0.3%
Game Theory	9	0.8%	0.2%
Topological Sort	9	0.8%	0.2%
Shortest Path	8	0.7%	0.1%
Binary Indexed Tree	7	0.6%	0.1%
Data Stream	7	0.6%	0.1%
Rolling Hash	7	0.6%	0.1%
Bucket Sort	6	0.5%	0.1%
Counting Sort	6	0.5%	0.1%
Doubly-Linked List	6	0.5%	0.1%
Merge Sort	6	0.5%	0.1%
Monotonic Queue	6	0.5%	0.1%
Brainteaser	5	0.4%	0.2%
Combinatorics	5	0.4%	0.1%
Bitmask	4	0.3%	0.1%
Interactive	4	0.3%	0.1%
Quickselect	4	0.3%	0.1%
Randomized	4	0.3%	0.1%
Sweep Line	3	0.3%	0.1%
Probability and Statistics	3	0.3%	0.1%
Radix Sort	2	0.2%	0.0%
Biconnected Component	1	0.1%	0.0%
Concurrency	1	0.1%	0.1%
Eulerian Circuit	1	0.1%	0.0%
Iterator	1	0.1%	0.0%
Rejection Sampling	1	0.1%	0.0%
Shell	1	0.1%	0.1%
Sort	1	0.1%	0.0%
Strongly Connected Component	1	0.1%	0.0%
Suffix Array	1	0.1%	0.0%

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