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Mozilla LeetCode Interview Questions

Practice 34 real coding problems frequently asked in Mozilla technical interviews. Master these questions to ace your next Mozilla software engineering interview.

7 Easy
23 Medium
4 Hard

Top Topics at Mozilla

ArrayStringDynamic ProgrammingMathSorting

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Mozilla Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Kth Largest Element in an Array
100%
MediumM
100%
ArrayDivide and Conquer+3
Solve→
Word Break II
91%
HardH
91%
ArrayHash Table+5
Solve→
Ransom Note
89%
EasyE
89%
Hash TableString+1
Solve→
Pascal's Triangle
86%
EasyE
86%
ArrayDynamic Programming
Solve→
Digit Operations to Make Two Integers Equal
84%
MediumM
84%
MathGraph+3
Solve→
Flood Fill
82%
EasyE
82%
ArrayDepth-First Search+2
Solve→
Reverse Integer
81%
MediumM
81%
Math
Solve→
Line Reflection
71%
MediumM
71%
ArrayHash Table+1
Solve→
Maximum Swap
69%
MediumM
69%
MathGreedy
Solve→
Generate Parentheses
64%
MediumM
64%
StringDynamic Programming+1
Solve→
Squares of a Sorted Array
64%
EasyE
64%
ArrayTwo Pointers+1
Solve→
Merge Intervals
64%
MediumM
64%
ArraySorting
Solve→
Find Leaves of Binary Tree
64%
MediumM
64%
TreeDepth-First Search+1
Solve→
Missing Number
62%
EasyE
62%
ArrayHash Table+4
Solve→
Maximum Sum Circular Subarray
57%
MediumM
57%
ArrayDivide and Conquer+3
Solve→
Max Stack
55%
HardH
55%
Linked ListStack+3
Solve→
Sort Integers by The Power Value
54%
MediumM
54%
Dynamic ProgrammingMemoization+1
Solve→
Largest Rectangle in Histogram
52%
HardH
52%
ArrayStack+1
Solve→
Permutation in String
51%
MediumM
51%
Hash TableTwo Pointers+2
Solve→
K Closest Points to Origin
50%
MediumM
50%
ArrayMath+5
Solve→
House Robber II
47%
MediumM
47%
ArrayDynamic Programming
Solve→
House Robber
44%
MediumM
44%
ArrayDynamic Programming
Solve→
Minimum Limit of Balls in a Bag
42%
MediumM
42%
ArrayBinary Search
Solve→
Find K Pairs with Smallest Sums
37%
MediumM
37%
ArrayHeap (Priority Queue)
Solve→
Asteroid Collision
35%
MediumM
35%
ArrayStack+1
Solve→

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Zigzag Conversion
34%
MediumM
34%
String
Solve→
Basic Calculator II
34%
MediumM
34%
MathString+1
Solve→
Ways to Make a Fair Array
31%
MediumM
31%
ArrayPrefix Sum
Solve→
Valid Number
28%
HardH
28%
String
Solve→
Remove Duplicates from Sorted Array
28%
EasyE
28%
ArrayTwo Pointers
Solve→
Minimum Add to Make Parentheses Valid
26%
MediumM
26%
StringStack+1
Solve→
Lowest Common Ancestor of a Binary Tree
21%
MediumM
21%
TreeDepth-First Search+1
Solve→
Daily Temperatures
21%
MediumM
21%
ArrayStack+1
Solve→
Climbing Stairs
21%
EasyE
21%
MathDynamic Programming+1
Solve→

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Frequently Asked Questions

What LeetCode problems does Mozilla ask in interviews?

Mozilla commonly asks 34 coding problems in technical interviews, including Kth Largest Element in an Array, Word Break II, Ransom Note. The difficulty breakdown is 7 Easy, 23 Medium, and 4 Hard problems.

How should I prepare for a Mozilla coding interview?

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

What is the difficulty level of Mozilla coding interviews?

Based on our data, Mozilla interviews include 7 Easy (21%), 23 Medium (68%), and 4 Hard (12%) problems.

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