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Cummins LeetCode Interview Questions

Practice 50 real coding problems frequently asked in Cummins technical interviews. Master these questions to ace your next Cummins software engineering interview.

15 Easy
30 Medium
5 Hard

Top Topics at Cummins

ArrayStringHash TableTwo PointersDynamic Programming

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Cummins Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Alien Dictionary
100%
HardH
100%
ArrayString+4
Solve→
Minimum Array Sum
93%
MediumM
93%
ArrayDynamic Programming
Solve→
Convert Sorted List to Binary Search Tree
91%
MediumM
91%
Linked ListDivide and Conquer+3
Solve→
Clone Graph
89%
MediumM
89%
Hash TableDepth-First Search+2
Solve→
Design Hit Counter
88%
MediumM
88%
ArrayBinary Search+3
Solve→
LFU Cache
85%
HardH
85%
Hash TableLinked List+2
Solve→
Insert Delete GetRandom O(1)
84%
MediumM
84%
ArrayHash Table+3
Solve→
Longest Arithmetic Subsequence of Given Difference
84%
MediumM
84%
ArrayHash Table+1
Solve→
4Sum
84%
MediumM
84%
ArrayTwo Pointers+1
Solve→
Search Insert Position
83%
EasyE
83%
ArrayBinary Search
Solve→
Regular Expression Matching
81%
HardH
81%
StringDynamic Programming+1
Solve→
Remove Letter To Equalize Frequency
80%
EasyE
80%
Hash TableString+1
Solve→
Add Strings
78%
EasyE
78%
MathString+1
Solve→
Climbing Stairs
77%
EasyE
77%
MathDynamic Programming+1
Solve→
Next Permutation
77%
MediumM
77%
ArrayTwo Pointers
Solve→
Kth Smallest Element in a Sorted Matrix
77%
MediumM
77%
ArrayBinary Search+3
Solve→
Find K Closest Elements
75%
MediumM
75%
ArrayTwo Pointers+4
Solve→
Ransom Note
74%
EasyE
74%
Hash TableString+1
Solve→
Longest Repeating Character Replacement
63%
MediumM
63%
Hash TableString+1
Solve→
Find the Celebrity
62%
MediumM
62%
Two PointersGraph+1
Solve→
Reorganize String
60%
MediumM
60%
Hash TableString+4
Solve→
Diameter of Binary Tree
59%
EasyE
59%
TreeDepth-First Search+1
Solve→
Word Search
57%
MediumM
57%
ArrayString+2
Solve→
Flood Fill
55%
EasyE
55%
ArrayDepth-First Search+2
Solve→
Jump Game II
54%
MediumM
54%
ArrayDynamic Programming+1
Solve→

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Add Two Numbers
54%
MediumM
54%
Linked ListMath+1
Solve→
Zigzag Conversion
50%
MediumM
50%
String
Solve→
Pascal's Triangle
49%
EasyE
49%
ArrayDynamic Programming
Solve→
Make String a Subsequence Using Cyclic Increments
49%
MediumM
49%
Two PointersString
Solve→
Reverse Linked List
47%
EasyE
47%
Linked ListRecursion
Solve→
Recyclable and Low Fat Products
46%
EasyE
46%
Database
Solve→
Container With Most Water
45%
MediumM
45%
ArrayTwo Pointers+1
Solve→
Analyze User Website Visit Pattern
44%
MediumM
44%
ArrayHash Table+1
Solve→
K Inverse Pairs Array
43%
HardH
43%
Dynamic Programming
Solve→
Search in Rotated Sorted Array
41%
MediumM
41%
ArrayBinary Search
Solve→
Shortest Word Distance II
40%
MediumM
40%
ArrayHash Table+3
Solve→
Palindromic Substrings
40%
MediumM
40%
Two PointersString+1
Solve→
Remove Duplicates from Sorted Array II
37%
MediumM
37%
ArrayTwo Pointers
Solve→
Identify the Largest Outlier in an Array
35%
MediumM
35%
ArrayHash Table+2
Solve→
Majority Element
33%
EasyE
33%
ArrayHash Table+3
Solve→
String Compression
32%
MediumM
32%
Two PointersString
Solve→
Isomorphic Strings
31%
EasyE
31%
Hash TableString
Solve→
Ways to Make a Fair Array
28%
MediumM
28%
ArrayPrefix Sum
Solve→
Maximum Nesting Depth of the Parentheses
28%
EasyE
28%
StringStack
Solve→
Palindrome Linked List
26%
EasyE
26%
Linked ListTwo Pointers+2
Solve→
Boundary of Binary Tree
25%
MediumM
25%
TreeDepth-First Search+1
Solve→
Digit Operations to Make Two Integers Equal
24%
MediumM
24%
MathGraph+3
Solve→
Copy List with Random Pointer
23%
MediumM
23%
Hash TableLinked List
Solve→
Maximum Units on a Truck
21%
EasyE
21%
ArrayGreedy+1
Solve→
Rank Transform of a Matrix
21%
HardH
21%
ArrayUnion Find+4
Solve→

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Frequently Asked Questions

What LeetCode problems does Cummins ask in interviews?

Cummins commonly asks 50 coding problems in technical interviews, including Alien Dictionary, Minimum Array Sum, Convert Sorted List to Binary Search Tree. The difficulty breakdown is 15 Easy, 30 Medium, and 5 Hard problems.

How should I prepare for a Cummins coding interview?

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

What is the difficulty level of Cummins coding interviews?

Based on our data, Cummins interviews include 15 Easy (30%), 30 Medium (60%), and 5 Hard (10%) problems.

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