Challenges

  1. Home
  2. Challenges

Do you want to see live coding?
YouTube Channel
Week Date Challenges Reviews
344 October 20, 2025
  • 1. Array Form Compute
  • 2. Array Formation
343 October 13, 2025
  • 1. Zero Friend
  • 2. Champion Team
Recap
342 October 06, 2025
  • 1. Balance String
  • 2. Max Score
Recap
341 September 29, 2025
  • 1. Broken Keyboard
  • 2. Reverse Prefix
Recap
340 September 22, 2025
  • 1. Duplicate Removals
  • 2. Ascending Numbers
Recap
339 September 15, 2025
  • 1. Max Diff
  • 2. Peak Point
Recap
338 September 08, 2025
  • 1. Highest Row
  • 2. Max Distance
Recap
337 September 01, 2025
  • 1. Smaller Than Current
  • 2. Odd Matrix
Recap
336 August 25, 2025
  • 1. Equal Group
  • 2. Final Score
Recap
335 August 18, 2025
  • 1. Common Characters
  • 2. Find Winner
Recap
334 August 11, 2025
  • 1. Range Sum
  • 2. Nearest Valid Point
Recap
333 August 04, 2025
  • 1. Straight Line
  • 2. Duplicate Zeros
Recap
332 July 28, 2025
  • 1. Binary Date
  • 2. Odd Letters
Recap
331 July 21, 2025
  • 1. Last Word
  • 2. Buddy Strings
Recap
330 July 14, 2025
  • 1. Clear Digits
  • 2. Title Capital
Recap
329 July 07, 2025
  • 1. Counter Integers
  • 2. Nice String
Recap
328 June 30, 2025
  • 1. Replace all ?
  • 2. Good String
Recap
327 June 23, 2025
  • 1. Missing Integers
  • 2. MAD
Recap
326 June 16, 2025
  • 1. Day of the Year
  • 2. Decompressed List
Recap
325 June 09, 2025
  • 1. Consecutive One
  • 2. Final Price
Recap
324 June 02, 2025
  • 1. 2D Array
  • 2. Total XOR
Recap
323 May 26, 2025
  • 1. Increment Decrement
  • 2. Tax Amount
Recap
322 May 19, 2025
  • 1. Format String
  • 2. Rank Array
Recap
321 May 12, 2025
  • 1. Distinct Average
  • 2. Backspace Compare
Recap
320 May 05, 2025
  • 1. Maximum Count
  • 2. Sum Difference
Recap
319 April 28, 2025
  • 1. Word Count
  • 2. Minimum Common
Recap
318 April 21, 2025
  • 1. Group Position
  • 2. Reverse Equals
Recap
317 April 14, 2025
  • 1. Acronyms
  • 2. Friendly Strings
Recap
316 April 07, 2025
  • 1. Circular
  • 2. Subsequence
Recap
315 March 31, 2025
  • 1. Find Words
  • 2. Find Third
Recap
314 March 24, 2025
  • 1. Equal Strings
  • 2. Sort Column
Recap
313 March 17, 2025
  • 1. Broken Keys
  • 2. Reverse Letters
Recap
312 March 10, 2025
  • 1. Minimum Time
  • 2. Balls and Boxes
Recap
311 March 03, 2025
  • 1. Upper Lower
  • 2. Group Digit Sum
Recap
310 February 24, 2025
  • 1. Arrays Intersection
  • 2. Sort Odd Even
Recap
309 February 17, 2025
  • 1. Min Gap
  • 2. Min Diff
Recap
308 February 10, 2025
  • 1. Count Common
  • 2. Decode XOR
Recap
307 February 03, 2025
  • 1. Check Order
  • 2. Find Anagrams
Recap
306 January 27, 2025
  • 1. Odd Sum
  • 2. Last Element
Recap
305 January 20, 2025
  • 1. Binary Prefix
  • 2. Alien Dictionary
Recap
304 January 13, 2025
  • 1. Arrange Binary
  • 2. Maximum Average
Recap
303 January 06, 2025
  • 1. 3-digits Even
  • 2. Delete and Earn
Recap
302 December 30, 2024
  • 1. Ones and Zeroes
  • 2. Step by Step
Recap
301 December 23, 2024
  • 1. Largest Number
  • 2. Hamming Distance
Recap
300 December 16, 2024
  • 1. Beautiful Arrangement
  • 2. Nested Array
Recap
299 December 09, 2024
  • 1. Replace Words
  • 2. Word Search
Recap
298 December 02, 2024
  • 1. Maximal Square
  • 2. Right Interval
Recap
297 November 25, 2024
  • 1. Contiguous Array
  • 2. Semi-Ordered Permutation
Recap
296 November 18, 2024
  • 1. String Compression
  • 2. Matchstick Square
Recap
295 November 11, 2024
  • 1. Word Break
  • 2. Jump Game
Recap
294 November 04, 2024
  • 1. Consecutive Sequence
  • 2. Next Permutation
Recap
293 October 28, 2024
  • 1. Similar Dominos
  • 2. Boomerang
Recap
292 October 21, 2024
  • 1. Twice Largest
  • 2. Zuma Game
Recap
291 October 14, 2024
  • 1. Middle Index
  • 2. Poker Hand Rankings
Recap
290 October 07, 2024
  • 1. Double Exist
  • 2. Luhn's Algorithm
Recap
289 September 30, 2024
  • 1. Third Maximum
  • 2. Jumbled Letters
Recap
288 September 23, 2024
  • 1. Closest Palindrome
  • 2. Contiguous Block
Recap
287 September 16, 2024
  • 1. Strong Password
  • 2. Valid Number
Recap
286 September 09, 2024
  • 1. Self Spammer
  • 2. Order Game
Recap
285 September 02, 2024
  • 1. No Connection
  • 2. Making Change
Recap
284 August 26, 2024
  • 1. Lucky Integer
  • 2. Relative Sort
Recap
283 August 19, 2024
  • 1. Unique Number
  • 2. Digit Count Value
Recap
282 August 12, 2024
  • 1. Good Integer
  • 2. Changing Keys
Recap
281 August 05, 2024
  • 1. Check Color
  • 2. Knight's Move
Recap
280 July 29, 2024
  • 1. Twice Appearance
  • 2. Count Asterisks
Recap
279 July 22, 2024
  • 1. Sort Letters
  • 2. Split String
Recap
278 July 15, 2024
  • 1. Sort String
  • 2. Reverse Word
Recap
277 July 08, 2024
  • 1. Count Common
  • 2. Strong Pair
Recap
276 July 01, 2024
  • 1. Complete Day
  • 2. Maximum Frequency
Recap
275 June 24, 2024
  • 1. Broken Keys
  • 2. Replace Digits
Recap
274 June 17, 2024
  • 1. Goat Latin
  • 2. Bus Route
Recap
273 June 10, 2024
  • 1. Percentage of Character
  • 2. B After A
Recap Raku
272 June 03, 2024
  • 1. Defrang IP Address
  • 2. String Score
Recap
271 May 27, 2024
  • 1. Maximum Ones
  • 2. Sort by 1 bits
Recap
270 May 20, 2024
  • 1. Special Positions
  • 2. Equalize Array
Recap
269 May 13, 2024
  • 1. Bitwise OR
  • 2. Distribute Elements
Recap
268 May 06, 2024
  • 1. Magic Number
  • 2. Number Game
Recap Raku
267 April 29, 2024
  • 1. Product Sign
  • 2. Line Counts
Recap
266 April 22, 2024
  • 1. Uncommon Words
  • 2. X Matrix
Recap
265 April 15, 2024
  • 1. 33% Appearance
  • 2. Completing Word
Recap
264 April 08, 2024
  • 1. Greatest English Letter
  • 2. Target Array
Recap
263 April 01, 2024
  • 1. Target Index
  • 2. Merge Items
Recap Raku
262 March 25, 2024
  • 1. Max Positive Negative
  • 2. Count Equal Divisible
Recap Raku
261 March 18, 2024
  • 1. Element Digit Sum
  • 2. Multiply by Two
Recap
260 March 11, 2024
  • 1. Unique Occurrences
  • 2. Dictionary Rank
Recap
259 March 04, 2024
  • 1. Banking Day Offset
  • 2. Line Parser
Recap
258 February 26, 2024
  • 1. Count Even Digits Number
  • 2. Sum of Values
Recap
257 February 19, 2024
  • 1. Smaller than Current
  • 2. Reduced Row Echelon
Recap
256 February 12, 2024
  • 1. Maximum Pairs
  • 2. Merge Strings
Recap
255 February 05, 2024
  • 1. Odd Character
  • 2. Most Frequent Word
Recap
254 January 29, 2024
  • 1. Three Power
  • 2. Reverse Vowels
Recap
253 January 22, 2024
  • 1. Split Strings
  • 2. Weakest Row
Recap
252 January 15, 2024
  • 1. Special Numbers
  • 2. Unique Sum Zero
Recap
251 January 08, 2024
  • 1. Concatenation Value
  • 2. Lucky Numbers
Recap
250 January 01, 2024
  • 1. Smallest Index
  • 2. Alphanumeric String Value
Recap
249 December 25, 2023
  • 1. Equal Pairs
  • 2. DI String Match
Recap
248 December 18, 2023
  • 1. Shortest Distance
  • 2. Submatrix Sum
Recap
247 December 11, 2023
  • 1. Secret Santa
  • 2. Most Frequent Letter Pair
Recap
246 December 04, 2023
  • 1. 6 out of 49
  • 2. Linear Recurrence of Second Order
Recap
245 November 27, 2023
  • 1. Sort Language
  • 2. Largest of Three
Recap
244 November 20, 2023
  • 1. Count Smaller
  • 2. Group Hero
Recap
243 November 13, 2023
  • 1. Reverse Pairs
  • 2. Floor Sum
Recap
242 November 06, 2023
  • 1. Missing Members
  • 2. Flip Matrix
Recap
241 October 30, 2023
  • 1. Arithmetic Triplets
  • 2. Prime Order
Recap
240 October 23, 2023
  • 1. Acronym
  • 2. Build Array
Recap
239 October 16, 2023
  • 1. Same String
  • 2. Consistent Strings
Recap
238 October 09, 2023
  • 1. Running Sum
  • 2. Persistence Sort
Recap
237 October 02, 2023
  • 1. Seize The Day
  • 2. Maximise Greatness
Recap
236 September 25, 2023
  • 1. Exact Change
  • 2. Array Loops
Recap
235 September 18, 2023
  • 1. Remove One
  • 2. Duplicate Zeros
Recap
234 September 11, 2023
  • 1. Common Characters
  • 2. Unequal Triplets
Recap
233 September 04, 2023
  • 1. Similar Words
  • 2. Frequency Sort
Recap
231 August 21, 2023
  • 1. Min Max
  • 2. Senior Citizens
Recap
230 August 14, 2023
  • 1. Separate Digits
  • 2. Count Words
Recap
229 August 07, 2023
  • 1. Lexicographic Order
  • 2. Two out of Three
Recap
228 July 31, 2023
  • 1. Unique Sum
  • 2. Empty Array
Recap
227 July 24, 2023
  • 1. Friday 13th
  • 2. Roman Maths
Recap
226 July 17, 2023
  • 1. Shuffle String
  • 2. Zero Array
Recap
225 July 10, 2023
  • 1. Max Words
  • 2. Left Right Sum Diff
Recap
224 July 03, 2023
  • 1. Special Notes
  • 2. Additive Number
Recap
223 June 26, 2023
  • 1. Count Primes
  • 2. Box Coins
Recap
222 June 19, 2023
  • 1. Matching Members
  • 2. Last Member
Recap
221 June 12, 2023
  • 1. Good Strings
  • 2. Arithmetic Subsequence
Recap
220 June 05, 2023
  • 1. Common Characters
  • 2. Squareful
Recap
219 May 29, 2023
  • 1. Sorted Squares
  • 2. Travel Expenditure
Recap
218 May 22, 2023
  • 1. Maximum Product
  • 2. Matrix Score
Recap
217 May 15, 2023
  • 1. Sorted Matrix
  • 2. Max Number
Recap
216 May 08, 2023
  • 1. Registration Number
  • 2. Word Stickers
Recap
215 May 01, 2023
  • 1. Odd one Out
  • 2. Number Placement
Recap
214 April 24, 2023
  • 1. Rank Score
  • 2. Collect Points
Recap
213 April 17, 2023
  • 1. Fun Sort
  • 2. Shortest Route
Recap
212 April 10, 2023
  • 1. Jumping Letters
  • 2. Rearrange Groups
Recap
211 April 03, 2023
  • 1. Toeplitz Matrix
  • 2. Split Same Average
Recap
210 March 27, 2023
  • 1. Kill and Win
  • 2. Number Collision
Recap
209 March 20, 2023
  • 1. Special Bit Characters
  • 2. Merge Account
Recap
208 March 13, 2023
  • 1. Minimum Index Sum
  • 2. Duplicate and Missing
Recap
207 March 06, 2023
  • 1. Keyboard Word
  • 2. H-Index
Recap
206 February 27, 2023
  • 1. Shortest Time
  • 2. Array Pairings
Recap
205 February 20, 2023
  • 1. Third Highest
  • 2. Maximum XOR
Recap
204 February 13, 2023
  • 1. Monotonic Array
  • 2. Reshape Matrix
Recap
203 February 06, 2023
  • 1. Special Quadruplets
  • 2. Copy Directory
Recap
202 January 30, 2023
  • 1. Consecutive Odds
  • 2. Widest Valley
Recap
201 January 23, 2023
  • 1. Missing Numbers
  • 2. Penny Piles
Recap
200 January 16, 2023
  • 1. Arithmetic Slices
  • 2. Seven Segment 200
Recap
199 January 09, 2023
  • 1. Good Pairs
  • 2. Good Triplets
Recap
198 January 02, 2023
  • 1. Max Gap
  • 2. Prime Count
Recap
197 December 26, 2022
  • 1. Move Zero
  • 2. Wiggle Sort
Recap
196 December 19, 2022
  • 1. Pattern 132
  • 2. Range List
Recap
195 December 12, 2022
  • 1. Special Integers
  • 2. Most Frequent Even
Recap
194 December 05, 2022
  • 1. Digital Clock
  • 2. Frequency Equalizer
Recap
193 November 28, 2022
  • 1. Binary String
  • 2. Odd String
Recap
192 November 21, 2022
  • 1. Binary Flip
  • 2. Equal Distribution
Recap
191 November 14, 2022
  • 1. Twice Largest
  • 2. Cute List
Recap
190 November 07, 2022
  • 1. Capital Detection
  • 2. Decoded List
Recap
189 October 31, 2022
  • 1. Greater Character
  • 2. Array Degree
Recap
188 October 24, 2022
  • 1. Divisible Pairs
  • 2. Total Zero
Recap
187 October 17, 2022
  • 1. Days Together
  • 2. Magical Triplets
Recap
186 October 10, 2022
  • 1. Zip List
  • 2. Unicode Makeover
Recap
185 October 03, 2022
  • 1. MAC Address
  • 2. Mask Code
Recap
184 September 26, 2022
  • 1. Sequence Number
  • 2. Split Array
Recap
183 September 19, 2022
  • 1. Unique Array
  • 2. Date Difference
Recap
182 September 12, 2022
  • 1. Max Index
  • 2. Common Path
Recap
181 September 05, 2022
  • 1. Sentence Order
  • 2. Hot Day
Recap
180 August 29, 2022
  • 1. First Unique Character
  • 2. Trim List
Recap Perl
179 August 22, 2022
  • 1. Ordinal Number Spelling
  • 2. Unicode Sparkline
Recap Perl
178 August 15, 2022
  • 1. Quater-imaginary Base
  • 2. Business Date
Recap Perl
177 August 08, 2022
  • 1. Damm Algorithm
  • 2. Palindromic Prime Cyclops Numbers
Recap Perl
176 August 01, 2022
  • 1. Permuted Multiples
  • 2. Reversible Numbers
Recap Perl
175 July 25, 2022
  • 1. Last Sunday
  • 2. Perfect Totient Numbers
Recap Perl
174 July 18, 2022
  • 1. Disarium Numbers
  • 2. Permutation Ranking
Recap Perl
173 July 11, 2022
  • 1. Esthetic Number
  • 2. Sylvester's sequence
Recap Perl
172 July 04, 2022
  • 1. Prime Partition
  • 2. Five-number Summary
Recap Perl
171 June 27, 2022
  • 1. Abundant Number
  • 2. First-class Function
Recap Perl
170 June 20, 2022
  • 1. Primorial Numbers
  • 2. Kronecker Product
Recap Perl
169 June 13, 2022
  • 1. Brilliant Numbers
  • 2. Achilles Numbers
Recap Perl
168 June 06, 2022
  • 1. Perrin Prime
  • 2. Home Prime
Recap Perl
167 May 30, 2022
  • 1. Circular Prime
  • 2. Gamma Function
Recap
166 May 23, 2022
  • 1. Hexadecimal Words
  • 2. K-Directory Diff
Recap Perl
165 May 16, 2022
  • 1. Scalable Vector Graphics (SVG)
  • 2. Line of Best Fit
Recap Perl
164 May 09, 2022
  • 1. Prime Palindrome
  • 2. Happy Numbers
Recap Perl
163 May 02, 2022
  • 1. Sum Bitwise Operator
  • 2. Summations
Recap Perl
162 April 25, 2022
  • 1. ISBN-13
  • 2. Wheatstone-Playfair
Recap Perl
161 April 18, 2022
  • 1. Abecedarian Words
  • 2. Pangrams
Recap Perl
160 April 11, 2022
  • 1. Four Is Magic
  • 2. Equilibrium Index
Recap Perl
159 April 04, 2022
  • 1. Farey Sequence
  • 2. Moebius Number
Recap Perl
158 March 28, 2022
  • 1. Additive Primes
  • 2. First Series Cuban Primes
Recap Perl
157 March 21, 2022
  • 1. Pythagorean Means
  • 2. Brazilian Number
Recap Perl
156 March 14, 2022
  • 1. Pernicious Numbers
  • 2. Weird Number
Recap Perl
155 March 07, 2022
  • 1. Fortunate Numbers
  • 2. Pisano Period
Recap Perl
154 February 28, 2022
  • 1. Missing Permutation
  • 2. Padovan Prime
Recap Perl
153 February 21, 2022
  • 1. Left Factorials
  • 2. Factorions
Recap Perl
152 February 14, 2022
  • 1. Triangle Sum Path
  • 2. Rectangle Area
Recap Perl
151 February 07, 2022
  • 1. Binary Tree Depth
  • 2. Rob The House
Recap Perl
150 January 31, 2022
  • 1. Fibonacci Words
  • 2. Square-free Integer
Recap Perl
149 January 24, 2022
  • 1. Fibonacci Digit Sum
  • 2. Largest Square
Recap Perl
148 January 17, 2022
  • 1. Eban Numbers
  • 2. Cardano Triplets
Recap Perl
147 January 10, 2022
  • 1. Truncatable Prime
  • 2. Pentagon Numbers
Recap Perl
146 January 03, 2022
  • 1. 10001st Prime Number
  • 2. Curious Fraction Tree
Recap Perl
145 December 27, 2021
  • 1. Dot Product
  • 2. Palindromic Tree
Recap Perl
144 December 20, 2021
  • 1. Semiprime
  • 2. Ulam Sequence
Recap Perl
143 December 13, 2021
  • 1. Calculator
  • 2. Stealthy Number
Recap Perl
142 December 06, 2021
  • 1. Divisor Last Digit
  • 2. Sleep Sort
Recap Perl
141 November 29, 2021
  • 1. Number Divisors
  • 2. Like Numbers
Recap Perl
140 November 22, 2021
  • 1. Add Binary
  • 2. Multiplication Table
Recap Perl
139 November 15, 2021
  • 1. JortSort
  • 2. Long Primes
Recap Perl
138 November 08, 2021
  • 1. Workdays
  • 2. Split Number
Recap Perl
137 November 01, 2021
  • 1. Long Year
  • 2. Lychrel Number
Recap Perl
136 October 25, 2021
  • 1. Two Friendly
  • 2. Fibonacci Sequence
Recap Perl
135 October 18, 2021
  • 1. Middle 3-digits
  • 2. Validate SEDOL
Recap Perl
134 October 11, 2021
  • 1. Pandigital Numbers
  • 2. Distinct Terms Count
Recap Perl
133 October 04, 2021
  • 1. Integer Square Root
  • 2. Smith Numbers
Recap Perl
132 September 27, 2021
  • 1. Mirror Dates
  • 2. Hash Join
Recap Perl
131 September 20, 2021
  • 1. Consecutive Arrays
  • 2. Find Pairs
Recap Perl
130 September 13, 2021
  • 1. Odd Number
  • 2. Binary Search Tree
Recap Perl
129 September 06, 2021
  • 1. Root Distance
  • 2. Add Linked Lists
Recap Perl
128 August 30, 2021
  • 1. Maximum Sub-Matrix
  • 2. Minimum Platforms
Recap Perl
127 August 23, 2021
  • 1. Disjoint Sets
  • 2. Conflict Intervals
Recap Perl
126 August 16, 2021
  • 1. Count Numbers
  • 2. Minesweeper Game
Recap Perl
125 August 09, 2021
  • 1. Pythagorean Triples
  • 2. Binary Tree Diameter
Recap Perl
124 August 02, 2021
  • 1. Happy Women Day
  • 2. Tug of War
Recap Perl
123 July 26, 2021
  • 1. Ugly Numbers
  • 2. Square Points
Recap Perl
122 July 19, 2021
  • 1. Average of Stream
  • 2. Basketball Points
Recap Perl
121 July 12, 2021
  • 1. Invert Bit
  • 2. The Travelling Salesman
Recap Perl
120 July 05, 2021
  • 1. Swap Odd/Even bits
  • 2. Clock Angle
Recap Perl
119 June 28, 2021
  • 1. Swap Nibbles
  • 2. Sequence without 1-on-1
Recap Perl
118 June 21, 2021
  • 1. Binary Palindrome
  • 2. Adventure of Knight
Recap Perl
117 June 14, 2021
  • 1. Missing Row
  • 2. Find Possible Paths
Recap Perl
116 June 07, 2021
  • 1. Number Sequence
  • 2. Sum of Squares
Recap Perl
115 May 31, 2021
  • 1. String Chain
  • 2. Largest Multiple
Recap Perl
114 May 24, 2021
  • 1. Next Palindrome Number
  • 2. Higher Integer Set Bits
Recap Perl
113 May 17, 2021
  • 1. Represent Integer
  • 2. Recreate Binary Tree
Recap Perl
112 May 10, 2021
  • 1. Canonical Path
  • 2. Climb Stairs
Recap Perl
111 May 03, 2021
  • 1. Search Matrix
  • 2. Ordered Letters
Recap Perl
110 April 26, 2021
  • 1. Valid Phone Numbers
  • 2. Transpose File
Recap Perl
109 April 19, 2021
  • 1. Chowla numbers
  • 2. Four Squares Puzzle
Recap Perl
108 April 12, 2021
  • 1. Locate Memory
  • 2. Bell Numbers
Recap Perl
107 April 05, 2021
  • 1. Self-descriptive Numbers
  • 2. List Methods
Recap Perl
106 March 29, 2021
  • 1. Maximum Gap
  • 2. Decimal String
Recap Perl
105 March 22, 2021
  • 1. Nth root
  • 2. The Name Game
Recap Perl
104 March 15, 2021
  • 1. FUSC Sequence
  • 2. NIM Game
Recap Perl
103 March 08, 2021
  • 1. Chinese Zodiac
  • 2. What's playing?
Recap Perl
102 March 01, 2021
  • 1. Rare Numbers
  • 2. Hash-counting String
Recap Perl
101 February 22, 2021
  • 1. Pack a Spiral
  • 2. Origin-containing Triangle
Recap Perl
100 February 15, 2021
  • 1. Fun Time
  • 2. Triangle Sum
Recap Perl
099 February 08, 2021
  • 1. Pattern Match
  • 2. Unique Subsequence
Recap Perl
098 February 01, 2021
  • 1. Read N-characters
  • 2. Search Insert Position
Recap Perl
097 January 25, 2021
  • 1. Caesar Cipher
  • 2. Binary Substrings
Recap Perl
096 January 18, 2021
  • 1. Reverse Words
  • 2. Edit Distance
Recap Perl
095 January 11, 2021
  • 1. Palindrome Number
  • 2. Demo Stack
Recap Perl
094 January 04, 2021
  • 1. Group Anagrams
  • 2. Binary Tree to Linked List
Recap Perl
093 December 28, 2020
  • 1. Max Points
  • 2. Sum Path
Recap Perl
092 December 21, 2020
  • 1. Isomorphic Strings
  • 2. Insert Interval
Recap Perl
091 December 14, 2020
  • 1. Count Number
  • 2. Jump Game
Recap Perl
090 December 07, 2020
  • 1. DNA Sequence
  • 2. Ethiopian Multiplication
Recap Perl
089 November 30, 2020
  • 1. GCD Sum
  • 2. Magical Matrix
Recap Perl
088 November 23, 2020
  • 1. Array of Product
  • 2. Spiral Matrix
Recap Perl
087 November 16, 2020
  • 1. Longest Consecutive Sequence
  • 2. Largest Rectangle
Recap
086 November 09, 2020
  • 1. Pair Difference
  • 2. Sudoku Puzzle
Recap
085 November 02, 2020
  • 1. Triplet Sum
  • 2. Power of Two Integers
Recap
084 October 26, 2020
  • 1. Reverse Integer
  • 2. Find Square
Recap Perl Raku
083 October 19, 2020
  • 1. Words Length
  • 2. Flip Array
Recap Perl Raku
082 October 12, 2020
  • 1. Common Factors
  • 2. Interleave String
Recap Perl 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

SO WHAT DO YOU THINK ?

If you have any suggestions or ideas then please do share with us.

Contact with me