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8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
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1 kyu
hardest
Algorithms
29
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7
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1
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2
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1
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5
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12
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13
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36
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2
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FEATURED TAGS
Cryptography
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Tutorials
36 Kata Found
6 kyu
Find the unique number
155,219
isqua
3 Issues Reported
Fundamentals
Algorithms
Arrays
Performance
7 kyu
The Poet And The Pendulum
4,844
MrZizoScream
4 Issues Reported
Fundamentals
Arrays
Algorithms
Performance
6 kyu
Allergy to Palindromes.
474
raulbc777
Fundamentals
Algorithms
Mathematics
Performance
Permutations
6 kyu
Pentabonacci
2,211
raulbc777
4 Issues Reported
Fundamentals
Mathematics
Algorithms
Performance
Dynamic Programming
5 kyu
The Primes as a Result of the Longest Consecutive Sum I
194
raulbc777
Performance
Algorithms
Mathematics
Data Structures
Arrays
Fundamentals
7 kyu
Over The Road
16,414
rge123
Fundamentals
Mathematics
Performance
8 kyu
Count Odd Numbers below n
56,373
kodejuice
1 Issue Reported
Performance
Mathematics
5 kyu
Maximum subarray sum
84,330
knotman90
3 Issues Reported
Algorithms
Lists
Dynamic Programming
Fundamentals
Performance
5 kyu
Odd-Even Compositions
88
eptaceps
Algorithms
Performance
Mathematics
5 kyu
Palindrome integer composition
339
KenKamau
Performance
Algorithms
4 kyu
Spinning Rings - Fidget Spinner Edition
264
Voile
Performance
3 kyu
Upside-Down Numbers - Challenge Edition
413
docgunthrop
1 Issue Reported
Performance
Algorithms
6 kyu
Checkerboard Resolution
449
Kacarott
Performance
Algorithms
Matrix
1 kyu
Faberge easter eggs crush test [linear]
1,693
ice1000
Performance
Algorithms
Mathematics
3 kyu
Fabergé Easter Eggs crush test
1,970
Ivana
8 Issues Reported
Mathematics
Dynamic Programming
Performance
Algorithms
1 kyu
7×7 Skyscrapers
2,102
JohanWiltink
1 Issue Reported
Algorithms
Games
Performance
4 kyu
Longest Common Subsequence (Performance version)
2,565
JohanWiltink
Performance
Strings
Dynamic Programming
Memoization
Algorithms
4 kyu
Count ones in a segment
3,322
d0n14
Binary
Performance
Algorithms
6 kyu
Numericals of a String
3,631
Jomopipi
Puzzles
Performance
Algorithms
6 kyu
Sums of Parts
25,577
g964
Fundamentals
Performance
Algorithms
4 kyu
Sum of Intervals
40,881
xDranik
Algorithms
Performance
5 kyu
Distinct contiguous elements in every window of size k
390
jteodoro
Arrays
Performance
Algorithms
5 kyu
Efficient Power Modulo n
1,201
osuushi
Mathematics
Algorithms
Performance
6 kyu
Highest Perfect Square with Same Digits
249
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Performance
Permutations
6 kyu
Find X Ⅱ
223
kodejuice
1 Issue Reported
Fundamentals
Performance
6 kyu
Back and forth then Reverse!
1,865
RNOH
Algorithms
Performance
Arrays
5 kyu
Paginating a huge book
1,849
hexafraction
Performance
Refactoring
4 kyu
Elevator Action!
70
ITSOES
Algorithms
Performance
5 kyu
Shuffle It Up
576
raulbc777
Performance
Algorithms
Mathematics
Machine Learning
Combinatorics
Number Theory
5 kyu
Missing number in Unordered Arithmetic Progression
1,065
Hacker Sakana
Algorithms
Mathematics
Performance
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