Company interviews / Hudson River Trading

Hudson River Trading interview practice

15 coding questions are known to come up in Hudson River Trading interviews (5 easy, 5 medium, 5 hard), 2 of them in the last six months. The most common topics are Array, Hash Table, Simulation, Math.

15Known questions

2Asked in last 6 months

5Medium

5Hard

Coding questions Hudson River Trading asks

From public company-tagged interview question lists. Most recent and most frequent first.

Easy 5Medium 5Hard 5

Array9
Hash Table3
Simulation3
Math3
Graph3
String3
Matrix2
Prefix Sum2
Greedy2
Bit Manipulation2
Binary Search1
Binary Indexed Tree1

Question	Difficulty	Asked recently
Block Placement Queries	Hard	Yes
Design Memory Allocator	Medium	Yes
Maximum Score From Grid Operations	Hard	—
Detect Pattern of Length M Repeated K or More Times	Easy	—
Convert Integer to the Sum of Two No-Zero Integers	Easy	—
Apply Operations to Make All Array Elements Equal to Zero	Medium	—
Add Edges to Make Degrees of All Nodes Even	Hard	—
Maximum Total Importance of Roads	Medium	—
Longest Path With Different Adjacent Characters	Hard	—
Largest Combination With Bitwise AND Greater Than Zero	Medium	—
Count Unguarded Cells in the Grid	Medium	—
Maximum 69 Number	Easy	—
Number of Steps to Reduce a Number to Zero	Easy	—
Text Justification	Hard	—
Longest Common Prefix	Easy	—

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