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C3.ai LeetCode Interview Questions

Practice 46 real coding problems frequently asked in C3.ai technical interviews. Master these questions to ace your next C3.ai software engineering interview.

8 Easy
36 Medium
2 Hard

Top Topics at C3.ai

ArrayStringHash TableBinary SearchSorting

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C3.ai Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Fraction to Recurring Decimal
100%
MediumM
100%
Hash TableMath+1
Solve→
K-diff Pairs in an Array
89%
MediumM
89%
ArrayHash Table+3
Solve→
Find the Index of the First Occurrence in a String
85%
EasyE
85%
Two PointersString+1
Solve→
Koko Eating Bananas
84%
MediumM
84%
ArrayBinary Search
Solve→
Find Peak Element
78%
MediumM
78%
ArrayBinary Search
Solve→
Coin Change
75%
MediumM
75%
ArrayDynamic Programming+1
Solve→
Largest Number
75%
MediumM
75%
ArrayString+2
Solve→
Identify the Largest Outlier in an Array
74%
MediumM
74%
ArrayHash Table+2
Solve→
Unique Paths
73%
MediumM
73%
MathDynamic Programming+1
Solve→
Custom Sort String
73%
MediumM
73%
Hash TableString+1
Solve→
Design HashMap
70%
EasyE
70%
ArrayHash Table+3
Solve→
Rotate Image
69%
MediumM
69%
ArrayMath+1
Solve→
Design Tic-Tac-Toe
69%
MediumM
69%
ArrayHash Table+3
Solve→
Longest Arithmetic Subsequence of Given Difference
64%
MediumM
64%
ArrayHash Table+1
Solve→
Merge Sorted Array
63%
EasyE
63%
ArrayTwo Pointers+1
Solve→
Maximum Sum Circular Subarray
62%
MediumM
62%
ArrayDivide and Conquer+3
Solve→
Accounts Merge
62%
MediumM
62%
ArrayHash Table+5
Solve→
Combination Sum II
61%
MediumM
61%
ArrayBacktracking
Solve→
Reverse Linked List
57%
EasyE
57%
Linked ListRecursion
Solve→
First Unique Character in a String
53%
EasyE
53%
Hash TableString+2
Solve→
Two City Scheduling
52%
MediumM
52%
ArrayGreedy+1
Solve→
Count Unhappy Friends
51%
MediumM
51%
ArraySimulation
Solve→
Find K Closest Elements
51%
MediumM
51%
ArrayTwo Pointers+4
Solve→
Range Sum of BST
49%
EasyE
49%
TreeDepth-First Search+2
Solve→
Search in Rotated Sorted Array
47%
MediumM
47%
ArrayBinary Search
Solve→

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Valid Parentheses
46%
EasyE
46%
StringStack
Solve→
Word Search
45%
MediumM
45%
ArrayString+2
Solve→
Remove All Occurrences of a Substring
45%
MediumM
45%
StringStack+1
Solve→
Longest Increasing Subsequence
45%
MediumM
45%
ArrayBinary Search+1
Solve→
Move Pieces to Obtain a String
43%
MediumM
43%
Two PointersString
Solve→
Search a 2D Matrix
43%
MediumM
43%
ArrayBinary Search+1
Solve→
Search Suggestions System
42%
MediumM
42%
ArrayString+4
Solve→
Binary Search Tree Iterator
41%
MediumM
41%
StackTree+4
Solve→
Minimum Operations to Make Character Frequencies Equal
39%
HardH
39%
Hash TableString+3
Solve→
Random Pick with Weight
38%
MediumM
38%
ArrayMath+3
Solve→
Design Hit Counter
37%
MediumM
37%
ArrayBinary Search+3
Solve→
Remove Stones to Minimize the Total
37%
MediumM
37%
ArrayGreedy+1
Solve→
Remove Nth Node From End of List
36%
MediumM
36%
Linked ListTwo Pointers
Solve→
Simplify Path
34%
MediumM
34%
StringStack
Solve→
Zero Array Transformation I
28%
MediumM
28%
ArrayPrefix Sum
Solve→
Sqrt(x)
28%
EasyE
28%
MathBinary Search
Solve→
All Nodes Distance K in Binary Tree
25%
MediumM
25%
Hash TableTree+3
Solve→
The kth Factor of n
25%
MediumM
25%
MathNumber Theory
Solve→
Continuous Subarray Sum
25%
MediumM
25%
ArrayHash Table+2
Solve→
Best Time to Buy and Sell Stock IV
23%
HardH
23%
ArrayDynamic Programming
Solve→
Palindromic Substrings
20%
MediumM
20%
Two PointersString+1
Solve→

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Frequently Asked Questions

What LeetCode problems does C3.ai ask in interviews?

C3.ai commonly asks 46 coding problems in technical interviews, including Fraction to Recurring Decimal, K-diff Pairs in an Array, Find the Index of the First Occurrence in a String. The difficulty breakdown is 8 Easy, 36 Medium, and 2 Hard problems.

How should I prepare for a C3.ai coding interview?

Focus on the most frequently asked problems first, especially those with high frequency scores. C3.ai interviews typically emphasize Array and String. Practice explaining your thought process while coding.

What is the difficulty level of C3.ai coding interviews?

Based on our data, C3.ai interviews include 8 Easy (17%), 36 Medium (78%), and 2 Hard (4%) problems.

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