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Ciena LeetCode Interview Questions

Practice 26 real coding problems frequently asked in Ciena technical interviews. Master these questions to ace your next Ciena software engineering interview.

7 Easy
16 Medium
3 Hard

Top Topics at Ciena

ArrayHash TableStringMathSliding Window

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Ciena Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
IP to CIDR
100%
MediumM
100%
StringBit Manipulation
Solve→
Longest Substring Without Repeating Characters
82%
MediumM
82%
Hash TableString+1
Solve→
Construct Quad Tree
79%
MediumM
79%
ArrayDivide and Conquer+2
Solve→
Binary Search Tree Iterator
79%
MediumM
79%
StackTree+4
Solve→
Count Unhappy Friends
73%
MediumM
73%
ArraySimulation
Solve→
Daily Temperatures
71%
MediumM
71%
ArrayStack+1
Solve→
Length of Last Word
68%
EasyE
68%
String
Solve→
Add Two Numbers
67%
MediumM
67%
Linked ListMath+1
Solve→
Can Place Flowers
66%
EasyE
66%
ArrayGreedy
Solve→
Insert Delete GetRandom O(1)
62%
MediumM
62%
ArrayHash Table+3
Solve→
Jump Game
61%
MediumM
61%
ArrayDynamic Programming+1
Solve→
Squares of a Sorted Array
61%
EasyE
61%
ArrayTwo Pointers+1
Solve→
Maximum Sum of Distinct Subarrays With Length K
60%
MediumM
60%
ArrayHash Table+1
Solve→
Remove Element
59%
EasyE
59%
ArrayTwo Pointers
Solve→
Best Time to Buy and Sell Stock II
59%
MediumM
59%
ArrayDynamic Programming+1
Solve→
Vertical Order Traversal of a Binary Tree
57%
HardH
57%
Hash TableTree+4
Solve→
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
56%
MediumM
56%
ArrayQueue+4
Solve→
Group Shifted Strings
54%
MediumM
54%
ArrayHash Table+1
Solve→
High Five
53%
EasyE
53%
ArrayHash Table+2
Solve→
Pow(x, n)
53%
MediumM
53%
MathRecursion
Solve→
Word Break II
43%
HardH
43%
ArrayHash Table+5
Solve→
Median of Two Sorted Arrays
40%
HardH
40%
ArrayBinary Search+1
Solve→
Open the Lock
32%
MediumM
32%
ArrayHash Table+2
Solve→
Combination Sum
29%
MediumM
29%
ArrayBacktracking
Solve→
Search Insert Position
28%
EasyE
28%
ArrayBinary Search
Solve→

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Add Two Integers
26%
EasyE
26%
Math
Solve→

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Frequently Asked Questions

What LeetCode problems does Ciena ask in interviews?

Ciena commonly asks 26 coding problems in technical interviews, including IP to CIDR, Longest Substring Without Repeating Characters, Construct Quad Tree. The difficulty breakdown is 7 Easy, 16 Medium, and 3 Hard problems.

How should I prepare for a Ciena coding interview?

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

What is the difficulty level of Ciena coding interviews?

Based on our data, Ciena interviews include 7 Easy (27%), 16 Medium (62%), and 3 Hard (12%) problems.

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