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Capital One LeetCode Interview Questions

Practice 63 coding problems currently tagged to Capital One. Use the frequency and topic signals to build a focused software engineering interview practice plan.

Last updated: September 28, 2026

13 Easy
40 Medium
10 Hard

Top Topics at Capital One

ArrayStringHash TableMathSimulation

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Capital One Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Simple Bank System
100%
MediumM
100%
ArrayHash Table+2
Solve→
Text Justification
94.1%
HardH
94.1%
ArrayString+1
Solve→
Block Placement Queries
89.7%
HardH
89.7%
ArrayBinary Search+3
Solve→
Spiral Matrix
88.4%
MediumM
88.4%
ArrayMatrix+1
Solve→
Candy Crush
83.2%
MediumM
83.2%
ArrayTwo Pointers+2
Solve→
Minimum Operations to Write the Letter Y on a Grid
81.4%
MediumM
81.4%
ArrayHash Table+2
Solve→
Find the Length of the Longest Common Prefix
79.4%
MediumM
79.4%
ArrayHash Table+2
Solve→
Restore the Array From Adjacent Pairs
76%
MediumM
76%
ArrayHash Table+1
Solve→
Design Memory Allocator
73.4%
MediumM
73.4%
ArrayHash Table+2
Solve→
Number of Black Blocks
71.9%
MediumM
71.9%
ArrayHash Table+1
Solve→
Number of Adjacent Elements With the Same Color
71.9%
MediumM
71.9%
Array
Solve→
Rotate Image
70.3%
MediumM
70.3%
ArrayMath+1
Solve→
Simplify Path
70.3%
MediumM
70.3%
StringStack
Solve→
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
68.6%
MediumM
68.6%
ArrayQueue+4
Solve→
Largest Rectangle in Histogram
66.7%
HardH
66.7%
ArrayStack+2
Solve→
Four Divisors
64.6%
MediumM
64.6%
ArrayMath+2
Solve→
Number of Islands
64.6%
MediumM
64.6%
ArrayDepth-First Search+3
Solve→
Count Operations to Obtain Zero
64.6%
EasyE
64.6%
MathSimulation
Solve→
Minimize Result by Adding Parentheses to Expression
64.6%
MediumM
64.6%
StringEnumeration
Solve→
Count Alternating Subarrays
62.3%
MediumM
62.3%
ArrayMath
Solve→
Binary Tree Paths
59.7%
EasyE
59.7%
StringBacktracking+3
Solve→
Rotating the Box
59.7%
MediumM
59.7%
ArrayTwo Pointers+1
Solve→
Count Prefix and Suffix Pairs II
56.7%
HardH
56.7%
ArrayString+5
Solve→
Container With Most Water
56.7%
MediumM
56.7%
ArrayTwo Pointers+1
Solve→
Best Time to Buy and Sell Stock
53.1%
EasyE
53.1%
ArrayDynamic Programming
Solve→

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Palindrome Number
53.1%
EasyE
53.1%
Math
Solve→
Add Strings
53.1%
EasyE
53.1%
MathString+1
Solve→
Number of Subarrays That Match a Pattern I
53.1%
MediumM
53.1%
ArrayRolling Hash+2
Solve→
Minimum Time Difference
53.1%
MediumM
53.1%
ArrayMath+2
Solve→
Add Two Numbers
48.7%
MediumM
48.7%
Linked ListMath+1
Solve→
Design File System
48.7%
MediumM
48.7%
Hash TableString+2
Solve→
Merge Intervals
48.7%
MediumM
48.7%
ArraySorting+1
Solve→
Minimum Absolute Difference Between Elements With Constraint
48.7%
MediumM
48.7%
ArrayBinary Search+1
Solve→
Brightest Position on Street
48.7%
MediumM
48.7%
ArraySorting+2
Solve→
Monotonic Array
48.7%
EasyE
48.7%
Array
Solve→
Count Prefix and Suffix Pairs I
43.1%
EasyE
43.1%
ArrayString+4
Solve→
Grumpy Bookstore Owner
43.1%
MediumM
43.1%
ArraySliding Window
Solve→
Number of Changing Keys
43.1%
EasyE
43.1%
String
Solve→
Letter Combinations of a Phone Number
43.1%
MediumM
43.1%
Hash TableString+1
Solve→
Number of Pairs of Strings With Concatenation Equal to Target
43.1%
MediumM
43.1%
ArrayHash Table+2
Solve→
Distribute Elements Into Two Arrays II
43.1%
HardH
43.1%
ArrayBinary Indexed Tree+2
Solve→
Two Sum
43.1%
EasyE
43.1%
ArrayHash Table
Solve→
Remove Boxes
35.2%
HardH
35.2%
ArrayDynamic Programming+1
Solve→
Non-overlapping Intervals
35.2%
MediumM
35.2%
ArrayDynamic Programming+2
Solve→
Meeting Rooms II
35.2%
MediumM
35.2%
ArrayTwo Pointers+4
Solve→
Valid Parentheses
35.2%
EasyE
35.2%
StringStack+1
Solve→
LRU Cache
35.2%
MediumM
35.2%
Hash TableLinked List+2
Solve→
Subarrays with K Different Integers
35.2%
HardH
35.2%
ArrayHash Table+2
Solve→
Flood Fill
35.2%
EasyE
35.2%
ArrayDepth-First Search+2
Solve→
Alternating Digit Sum
35.2%
EasyE
35.2%
Math
Solve→

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Count Nice Pairs in an Array
35.2%
MediumM
35.2%
ArrayHash Table+2
Solve→
Reconstruct Itinerary
35.2%
HardH
35.2%
ArrayString+7
Solve→
Word Ladder
35.2%
HardH
35.2%
Hash TableString+2
Solve→
Subarray Sum Equals K
35.2%
MediumM
35.2%
ArrayHash Table+1
Solve→
Maximum Running Time of N Computers
35.2%
HardH
35.2%
ArrayBinary Search+2
Solve→
Palindromic Substrings
35.2%
MediumM
35.2%
Two PointersString+1
Solve→
Longest Consecutive Sequence
35.2%
MediumM
35.2%
ArrayHash Table+1
Solve→
Fizz Buzz
35.2%
EasyE
35.2%
MathString+1
Solve→
Sort Colors
35.2%
MediumM
35.2%
ArrayTwo Pointers+3
Solve→
Finding Pairs With a Certain Sum
35.2%
MediumM
35.2%
ArrayHash Table+1
Solve→
Longest Palindromic Substring
35.2%
MediumM
35.2%
Two PointersString+2
Solve→
Alternating Groups II
35.2%
MediumM
35.2%
ArraySliding Window
Solve→
Count Positions on Street With Required Brightness
35.2%
MediumM
35.2%
ArrayPrefix Sum
Solve→

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Frequently Asked Questions

What LeetCode problems are tagged to Capital One?

Our current Capital One practice dataset contains 63 tagged coding problems, including Simple Bank System, Text Justification, Block Placement Queries. The difficulty breakdown is 13 Easy, 40 Medium, and 10 Hard problems.

How should I prepare for a Capital One coding interview?

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

What is the difficulty level of Capital One coding interviews?

Based on our data, Capital One interviews include 13 Easy (21%), 40 Medium (63%), and 10 Hard (16%) problems.

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