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Infosys Coding Interview Questions

We track 165 coding questions asked at Infosys, tagged with the algorithms and concepts they test. The most common: Array, Dynamic Programming, String, Math, Sorting.

Browse all 165 Infosys questions →

Concept mix

Each question's weight is split evenly across its concepts, so the shares sum to 100%.

Array — 20.9%String — 8.0%Math — 7.3%Dynamic Programming — 7.0%Two Pointers — 6.1%Sorting — 5.0%Hash Table — 4.8%Binary Search — 4.2%Greedy — 3.9%Linked List — 2.7%Other (39) — 30.3%

How many questions involve each concept

Share of all 165 tracked Infosys questions that touch each concept. Questions usually involve several, so these overlap.

Where Infosys differs from the average company

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

Infosys specialties

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

Difficulty mix

Level split of the 165 tracked Infosys questions.

  • Junior25% (42)
  • Mid/Senior55% (90)
  • Staff20% (33)

Every concept in Infosys interviews

ConceptQuestions% of questionsShare of mix
Array10161.2%20.9%
Dynamic Programming3420.6%7.0%
String3320.0%8.0%
Math3219.4%7.3%
Sorting3118.8%5.0%
Two Pointers2917.6%6.1%
Hash Table2716.4%4.8%
Binary Search2112.7%4.2%
Greedy1911.5%3.9%
Prefix Sum137.9%2.2%
Stack137.9%2.4%
Recursion116.7%2.4%
Heap (Priority Queue)95.5%1.1%
Linked List95.5%2.7%
Breadth-First Search84.8%1.3%
Divide and Conquer84.8%1.2%
Backtracking74.2%1.9%
Counting74.2%1.0%
Simulation74.2%1.4%
Sliding Window74.2%1.1%
Depth-First Search63.6%1.1%
Matrix63.6%1.1%
Monotonic Stack63.6%0.9%
Number Theory63.6%1.0%
Bit Manipulation53.0%0.8%
Tree53.0%1.0%
Union-Find53.0%0.7%
Database42.4%2.4%
Combinatorics31.8%0.3%
Design31.8%0.7%
Ordered Set31.8%0.4%
Segment Tree31.8%0.4%
Binary Indexed Tree21.2%0.2%
Binary Tree21.2%0.4%
Bitmask21.2%0.2%
Bucket Sort21.2%0.2%
Memoization21.2%0.4%
Quickselect21.2%0.2%
Binary Search Tree10.6%0.2%
Brainteaser10.6%0.3%
Counting Sort10.6%0.1%
Enumeration10.6%0.2%
Game Theory10.6%0.1%
Graph Theory10.6%0.2%
Merge Sort10.6%0.1%
Queue10.6%0.2%
Radix Sort10.6%0.1%
String Matching10.6%0.2%
Trie10.6%0.2%

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