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Intercom LeetCode Interview Questions

Practice 21 real coding problems frequently asked in Intercom technical interviews. Master these questions to ace your next Intercom software engineering interview.

7 Easy
11 Medium
3 Hard

Top Topics at Intercom

ArrayHash TableDepth-First SearchStringBreadth-First Search

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Intercom Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Word Ladder II
100%
HardH
100%
Hash TableString+2
Solve→
Unique Paths
94%
MediumM
94%
MathDynamic Programming+1
Solve→
Missing Number
85%
EasyE
85%
ArrayHash Table+4
Solve→
Two Sum
84%
EasyE
84%
ArrayHash Table
Solve→
Linked List Cycle
76%
EasyE
76%
Hash TableLinked List+1
Solve→
Number of Islands II
72%
HardH
72%
ArrayHash Table+1
Solve→
Rotting Oranges
69%
MediumM
69%
ArrayBreadth-First Search+1
Solve→
Nested List Weight Sum II
67%
MediumM
67%
StackDepth-First Search+1
Solve→
Insert Delete GetRandom O(1)
65%
MediumM
65%
ArrayHash Table+3
Solve→
Continuous Subarrays
64%
MediumM
64%
ArrayQueue+4
Solve→
Identify the Largest Outlier in an Array
55%
MediumM
55%
ArrayHash Table+2
Solve→
Best Time to Buy and Sell Stock II
55%
MediumM
55%
ArrayDynamic Programming+1
Solve→
Minimum Remove to Make Valid Parentheses
53%
MediumM
53%
StringStack
Solve→
Lowest Common Ancestor of a Binary Search Tree
51%
MediumM
51%
TreeDepth-First Search+2
Solve→
Remove Letter To Equalize Frequency
45%
EasyE
45%
Hash TableString+1
Solve→
Longest Increasing Path in a Matrix
44%
HardH
44%
ArrayDynamic Programming+6
Solve→
Flatten Binary Tree to Linked List
42%
MediumM
42%
Linked ListStack+3
Solve→
Range Sum of BST
39%
EasyE
39%
TreeDepth-First Search+2
Solve→
Merge Strings Alternately
31%
EasyE
31%
Two PointersString
Solve→
Subsets II
31%
MediumM
31%
ArrayBacktracking+1
Solve→
Search Insert Position
24%
EasyE
24%
ArrayBinary Search
Solve→

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Frequently Asked Questions

What LeetCode problems does Intercom ask in interviews?

Intercom commonly asks 21 coding problems in technical interviews, including Word Ladder II, Unique Paths, Missing Number. The difficulty breakdown is 7 Easy, 11 Medium, and 3 Hard problems.

How should I prepare for a Intercom coding interview?

Focus on the most frequently asked problems first, especially those with high frequency scores. Intercom interviews typically emphasize Array and Hash Table. Practice explaining your thought process while coding.

What is the difficulty level of Intercom coding interviews?

Based on our data, Intercom interviews include 7 Easy (33%), 11 Medium (52%), and 3 Hard (14%) problems.

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