Challenges

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Week Date Challenges Reviews
083 October 19, 2020
  • 1. Words Length
  • 2. Flip Array
082 October 12, 2020
  • 1. Common Factors
  • 2. Interleave String
Recap Raku
081 October 05, 2020
  • 1. Common Base String
  • 2. Frequency Sort
Recap Perl Raku
080 September 28, 2020
  • 1. Smallest Positive Number
  • 2. Count Candies
Recap Perl Raku
079 September 21, 2020
  • 1. Set Bit Count
  • 2. Trapped Rain Water
Recap Perl Raku
078 September 14, 2020
  • 1. Leader Element
  • 2. Left Rotation
Recap Perl Raku
077 September 07, 2020
  • 1. Fibonacci Sum
  • 2. Lonely X
Recap Perl Raku
076 August 31, 2020
  • 1. Prime Sum
  • 2. Word Search
Recap Perl Raku
075 August 24, 2020
  • 1. Coins Sum
  • 2. Largest Rectangle Histogram
Recap Perl Raku
074 August 17, 2020
  • 1. Majority Element
  • 2. FNR Character
Recap Perl Raku
073 August 10, 2020
  • 1. Min Sliding Window
  • 2. Smallest Neighbour
Recap Perl Raku
072 August 03, 2020
  • 1. Trailing Zeroes
  • 2. Lines Range
Recap Perl Raku
071 July 27, 2020
  • 1. Peak Element
  • 2. Trim Linked List
Recap Perl Raku
070 July 20, 2020
  • 1. Character Swapping
  • 2. Gray Code Sequence
Recap Perl Raku
069 July 13, 2020
  • 1. Strobogrammatic Number
  • 2. 0/1 String
Recap Perl Raku
068 July 06, 2020
  • 1. Zero Matrix
  • 2. Reorder List
Recap Perl
067 June 29, 2020
  • 1. Number Combinations
  • 2. Letter Phone
Recap Perl Raku
066 June 22, 2020
  • 1. Divide Integers
  • 2. Power Integers
Recap Perl Raku
065 June 15, 2020
  • 1. Digits Sum
  • 2. Palindrome Partition
Recap Perl
064 June 08, 2020
  • 1. Minimum Sum Path
  • 2. Word Break
Recap
063 June 01, 2020
  • 1. Last Word
  • 2. Rotate String
Recap
062 May 25, 2020
  • 1. Sort Email Addresses
  • 2. N Queens
Recap
061 May 18, 2020
  • 1. Product SubArray
  • 2. IPv4 Partition
Recap
060 May 11, 2020
  • 1. Excel Column
  • 2. Find Numbers
Recap
059 May 04, 2020
  • 1. Linked List
  • 2. Bit Sum
Recap
058 April 27, 2020
  • 1. Compare Version
  • 2. Ordered Lineup
Recap Raku
057 April 20, 2020
  • 1. Invert Tree
  • 2. Shortest Unique Prefix
Recap Raku
056 April 13, 2020
  • 1. Diff-K
  • 2. Path Sum
Recap Raku
055 April 06, 2020
  • 1. Flip Binary
  • 2. Wave Array
Recap
054 March 30, 2020
  • 1. kth Permutation Sequence
  • 2. Collatz Conjecture
Recap Perl Raku
053 March 23, 2020
  • 1. Rotate Matrix
  • 2. Vowel Strings
Recap Perl
052 March 16, 2020
  • 1. Stepping Numbers
  • 2. Lucky Winner
Recap Perl Raku
051 March 09, 2020
  • 1. 3 Sum
  • 2. Colourful Number
Recap Perl
050 March 02, 2020
  • 1. Merge Intervals
  • 2. Noble Integer
Recap Perl
049 February 23, 2020
  • 1. Smallest Multiple
  • 2. LRU Cache
Recap Perl
048 February 17, 2020
  • 1. Survivor
  • 2. Palindrome Dates
Recap Perl Raku
047 February 10, 2020
  • 1. Roman Calculator
  • 2. Gapful Number
Recap Perl Raku
046 February 03, 2020
  • 1. Cryptic Message
  • 2. Is the room open?
Recap Perl Raku
045 January 27, 2020
  • 1. Square Secret Code
  • 2. Source Dumper
Recap Perl Raku
044 January 20, 2020
  • 1. Only 100, please
  • 2. Make it $200
Recap Perl
043 January 13, 2020
  • 1. Olympic Rings
  • 2. Self-descriptive Numbers
Recap Perl
042 January 06, 2020
  • 1. Octal Number System
  • 2. Balanced Brackets
Recap Perl Raku
041 December 30, 2019
  • 1. Attractive Numbers
  • 2. Leonardo Numbers
Recap Perl Raku
040 December 23, 2019
  • 1. Multiple arrays
  • 2. Sorting sublists
Recap Perl Raku
039 December 16, 2019
  • 1. Guest house lights
  • 2. Reverse Polish Notation
Recap Perl Raku
038 December 09, 2019
  • 1. Date finder
  • 2. Word game
Recap Perl Raku
037 December 02, 2019
  • 1. Weekdays in 2019
  • 2. Daylight gain/loss
Recap Perl Raku
036 November 25, 2019
  • 1. Vehicle Identification Numbers
  • 2. Knapsack problem
Recap Perl Raku
035 November 18, 2019
  • 1. Encode binary morse code
  • 2. Decode binary morse code
Recap Perl Raku
034 November 11, 2019
  • 1. Hash and/or array slices
  • 2. Dispatch tables
Recap Perl Raku
033 November 04, 2019
  • 1. Count letters A..Z
  • 2. Multiplication table
Recap Perl Raku
032 October 28, 2019
  • 1. Count instances
  • 2. ASCII bar chart
Recap Perl Raku
031 October 21, 2019
  • 1. Divide by zero checking
  • 2. Dynamic variable names
Recap Perl Raku
030 October 14, 2019
  • 1. List Sunday Christmases
  • 2. Sums of 3 numbers equal to 12
Recap Perl Raku
029 October 07, 2019
  • 1. Brace expansion
  • 2. Calling C functions
Recap Perl Raku
028 September 30, 2019
  • 1. ASCII or binary files?
  • 2. Digital clock
Recap Perl Raku
027 September 23, 2019
  • 1. Intersection of two lines
  • 2. Historical values
Recap Perl Raku
026 September 16, 2019
  • 1. Stones and jewels alphabets
  • 2. Mean angles
Recap Perl
025 September 09, 2019
  • 1. Head to tail Pokémon names
  • 2. Chaocipher implementation
Recap Perl
024 September 02, 2019
  • 1. Smallest valid script
  • 2. Inverted index fulltext search
  • 3. PayRun.io API
Recap Perl
023 August 26, 2019
  • 1. nth order forward difference series
  • 2. Prime decomposition
  • 3. Random Poems API
Recap Perl
022 August 19, 2019
  • 1. Sexy prime pairs
  • 2. LZW Compression
  • 3. Amazon Pinpoint API
Recap Perl Raku
021 August 12, 2019
  • 1. Euler's number
  • 2. URL normalization (RFC 3986)
  • 3. BC Gov News API
Recap Perl Raku
020 August 05, 2019
  • 1. Same-character groups
  • 2. Smallest Amicable Number pair
  • 3. Mercedes-Benz Vehicle Images API
Recap Perl Raku
019 July 29, 2019
  • 1. Months with five weekends
  • 2. Greedy line wrapping
  • 3. NYT Books API
Recap Perl Raku
018 July 22, 2019
  • 1. Longest common substring
  • 2. Priority queue
  • 3. BabelNet API
Recap Perl Raku
017 July 15, 2019
  • 1. Ackermann function
  • 2. URL parsing
  • 3. Bhagavad Gita API
Recap Perl Raku
016 July 08, 2019
  • 1. Pythagoras Pie Puzzle
  • 2. Validating Bitcoin addresses
  • 3. Winning Email API
Recap Perl Raku
015 July 01, 2019
  • 1. Strong and weak primes
  • 2. Vigenère cipher
  • 3. Language Detection API
Recap Perl Raku
014 June 24, 2019
  • 1. Van Eck's sequence
  • 2. Spelling with US states
  • 3. Geo DB Cities API
Recap Perl Raku
013 June 17, 2019
  • 1. Last Fridays of every month
  • 2. Mutually recursive methods
  • 3. Words API
Recap Perl
012 June 10, 2019
  • 1. Smallest non-prime Euclid number
  • 2. Common directory
  • 3. Synonyms API
Recap Perl
011 June 03, 2019
  • 1. Equal point in Fahrenheit and Celsius
  • 2. Identity matrix of given size
  • 3. Open Weather Map API
Recap Perl Raku
010 May 27, 2019
  • 1. Roman numeral encode/decode
  • 2. Jaro-Winkler string distance
  • 3. SendGrid API
Recap Perl
009 May 20, 2019
  • 1. Square with 5 distinct digits
  • 2. Standard/modified/dense ranking
  • 3. Sparkpost API
Recap Perl
008 May 13, 2019
  • 1. Perfect numbers
  • 2. Centering strings
  • 3. @mailgun API
Recap Perl Raku
007 May 06, 2019
  • 1. Niven numbers
  • 2. Word ladders
Recap Perl Raku
006 April 29, 2019
  • 1. Compact number lists
  • 2. Ramanujan's constant
Recap Raku
005 April 22, 2019
  • 1. All anagrams for a word
  • 2. Sequence with most anagrams
Recap Raku
004 April 15, 2019
  • 1. Pi with output-sized script
  • 2. Possible words given chars
Recap Raku
003 April 08, 2019
  • 1. 5-smooth numbers
  • 2. Pascal's Triangle
Recap Raku
002 April 01, 2019
  • 1. Remove leading zeros
  • 2. Base-35 numbers
Recap
001 March 25, 2019
  • 1. Replace e with E
  • 2. FizzBuzz one-liner
Recap

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