Welcome to Scala Algorithms!
27 available Scala algorithms
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Check if an array is a palindrome in pure immutable Scala
Free
Balanced parentheses algorithm in immutable/pure functional Scala with tail-call recursion optimisation
Free
Find an unpaired number in an array
Free
Count binary gap size of a number in immutable/pure functional Scala using tail recursion
Free
Find maximum potential profit from an array of stock prices - pure-functional immutable Scala solution
Free
Fizz Buzz in purely functional immutable Scala
Free
Find the minimum absolute difference of two partitions
Solution: US$1.99
Free test cases & hints
Compute a Roman numeral for an Integer, and vice-versa
Solution: US$1.99
Free test cases & hints
Quick Sort sorting algorithm in pure immutable Scala
Solution: US$1.99
Free test cases & hints
Fibonacci in purely functional immutable Scala
Solution: US$1.99
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In a range of numbers, count the numbers divisible by a specific integer. Pure functional solution
Solution: US$1.99
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Is an Array a permutation? Pure-functional & immutable Scala algorithm
Solution: US$1.99
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Merge Sort: stack-safe, tail-recursive, in pure immutable Scala, N-way
Solution: US$1.99
Free test cases & hints
Closest pair of coordinates in a 2D plane
Solution: US$1.99
Free test cases & hints
Counting inversions of a sequence (array) in pure-functional immutable Scala, using a Merge Sort
Solution: US$1.99
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Rotate Array right in pure-functional Scala - using an unusual immutable efficient approach
Solution: US$1.99
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Count factors/divisors of an integer in pure-functional immutable Scala
Solution: US$1.99
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Merge Sort: in pure immutable Scala
Solution: US$1.99
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Longest increasing sub-sequence length
Solution: US$1.99
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Matching parentheses algorithm in immutable/pure functional Scala with foldLeft and a state machine
Solution: US$1.99
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Traverse a tree Breadth-First, immutably, and purely in Scala
Solution: US$1.99
Free test cases & hints
Count number of changes (manipulations) needed to make an anagram in immutable/pure functional Scala with foldLeft and a MultiSet
Solution: US$1.99
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Check if a number is a palindrome in pure immutable Scala
Solution: US$1.99
Free test cases & hints
Compute maximum sum of subarray (Kadane's algorithm) in purely functional immutable Scala
Solution: US$1.99
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Check if a String is a palindrome in immutable Scala
Solution: US$1.99
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Find sub-array with the maximum sum
Solution: US$1.99
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Traverse a tree Depth-First with purely-functional immutable Scala
Solution: US$1.99
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14 upcoming Scala algorithms
Tic Tac Toe board check
Available 6th December
Find the contiguous slice with the minimum average
Available 10th December
Run-length encoding in pure-functional immutable Scala
Available 13th December
Binary search a generic Array in pure functional Scala
Available 17th December
Find minimum positive number missing in a sequence
Available 20th December
Length of the longest common substring
Available 24th December
Count number of contiguous countries by colors
Available 1st January
Read a matrix as a spiral in pure-functional immutable Scala
Available 7th January
Rotate a matrix by 90 degrees in pure-functional immutable Scala
Available 14th January
Selection Search in pure-function immutable Scala
Available 21st January
Monitor success rate of a process that may fail
Available 28th January
Reverse a String's words efficiently
Available 4th February
Print Alphabet Diamond
Available 11th February
Compute nth row of Pascal's triangle in pure-function immutable Scala
Available 14th February