python-question-bank

Python solutions of problems from various competitive programming platforms.

Table of Contents

CSES Problem Set

• 1073 Towers
• 1074 Stick Lengths
• 1084 Apartments
• 1090 Ferris Wheel
• 1192 Counting Rooms
• 1620 Factory Machines
• 1629 Movie Festival
• 1630 Tasks and Deadlines
• 1633 Dice Combinations
• 1660 Subarray Sums I
• 1661 Subarray Sums II
• 1662 Subarray Divisibility
• 1666 Building Roads

Kattis

• A Real Challenge
• Accounting
• Add Two Numbers
• Air Conditioned Minions
• Almost Perfect
• Alphabet Spam
• An Industrial Spy
• Anagram Counting
• Annoyed Coworkers
• Apaxiaaaaaaaaaaaans!
• Arrangement
• ASCII Figure Rotation
• Average Character
• Average Speed
• Bard
• Basic Programming 1
• Basic Programming 2
• Basketball One-on-One
• Batter Up
• Beat the Spread!
• Bela
• Bijele
• Birthday Memorization
• Broken Calculator
• Broken Swords
• Calculator
• Carousel Rides
• Chanukah Challenge
• Character Development
• Circuit Math
• Closing the Loop
• Cold-puter Science
• Coloring Socks
• Combination Lock
• Competitive Arcade Basketball
• Contest Struggles
• Crne
• Cryptographer's Conundrum
• Cudoviste
• Das Blinkenlights
• Datum
• Daylight Saving Time
• Detailed Differences
• Dice Cup
• Digit Swap
• Dog & Gopher
• DRM Messages
• Drunk Vigenère
• Echo Echo Echo
• Electrical Outlets
• Eligibility
• Emag Eht Htiw Em Pleh
• Engineering English
• Erase Securely
• Estimating the Area of a Circle
• Faktor
• Fifty Shades of Pink
• Filip
• Final Exam
• Finding An A
• FizzBuzz
• FizzBuzz2
• Free Food
• FYI
• Game of Throwns
• Gerrymandering
• Graduation
• Grass Seed Inc
• Greetings!
• Guess the Number
• Guessing Game
• Hangman
• Harshad Numbers
• Heart Rate
• Heir's Dilemma
• Help a PhD candidate out!
• Hissing Microphone
• Homework
• Honour Thy (Apaxian) Parent
• I'm Thinking of a Number
• I've Been Everywhere, Man
• ICPC Awards
• ICPC Tutorial
• Integer Division
• IsItHalloween
• Jack-O'-Lantern Juxtaposition
• Job Expenses
• Judging Moose
• Jumbo Javelin
• Karte
• Kemija
• Kleptography
• Knot Knowledge
• Ladder
• Laptop Sticker
• Last Factorial Digit
• Left Beehind
• License to Launch
• Lost Lineup
• Magic Trick
• Math Homework
• Meow Factor
• Methodic Multiplication
• Mirror Images
• Missing Numbers
• Mixed Fractions
• Modulo
• N-sum
• Nasty Hacks
• No Duplicates
• NOP
• Number Fun
• Odd Echo
• Odd Gnome
• Odd Man Out
• Okviri
• Open Source
• Parking
• Patuljci
• Pet
• Piece of Cake!
• Planina
• Planting Trees
• Poker Hand
• Popularity Contest
• Pot
• Provinces and Gold
• Prsteni
• Quadrant Selection
• Quality-Adjusted Life-Year
• Quick Brown Fox
• Quick Estimates
• Racing Around the Alphabet
• Railroad
• Rating Problems
• Reduced ID Numbers
• Relocation
• Repeating Decimal
• Reverse
• Reversed Binary Numbers
• Rečenice
• Roaming Romans
• Seven Wonders
• Shattered Cake
• Shopping List (Easy)
• Shopping List
• Sibice
• Sim
• Simon Says
• Simple Arithmetic
• Skocimis
• SMIL
• Soda Slurper
• Sok
• Solving for Carrots
• Some Sum
• Sort of Sorting
• Sort Two Numbers
• Soylent
• Spavanac
• Speed Limit
• Speeding
• Spelling Bee
• Stand on Zanzibar
• Stopwatch
• Stuck In A Time Loop
• Sum Kind of Problem
• Sum Squared Digits Function
• Symmetric Order
• Synchronizing Lists
• T9 Spelling
• Tai's Formula
• Take Two Stones
• Tarifa
• Teacher Evaluation
• Tetration
• Text Encryption
• Thank God it's Friday
• The Amazing Human Cannonball
• The Dragon of Loowater
• The Easiest Problem Is This One
• The Key to Cryptography
• The Last Problem
• Timebomb
• Torn To Pieces
• Train Boarding
• Transit Woes
• Triangle Area
• Trik
• Triple Texting
• Two-sum
• UTF-8
• Vaccine Efficacy
• Variable Arithmetic
• Vector Functions (C++)
• Verify This, Your Majesty
• Watch Out For Those Hailstones!
• WERTYU
• What does the fox say?
• Where's My Internet??
• Which Base is it Anyway?
• Words for Numbers
• Zamka
• Östgötska

Leetcode

1. Two Sum

2. Add Two Numbers

3. Longest Substring Without Repeating Characters

4. Reverse Integer

5. Palindrome Number

6. Roman to Integer

7. Longest Common Prefix

8. Remove Nth Node From End of List

9. Valid Parentheses

10. Merge Two Sorrted Lists

11. Swap Nodes in Pairs

12. Remove Duplicates from Sorted Array

13. Remove Element

14. Implement strStr()

15. Search in Rotated Sorted Array

16. Find First and Last Position of Element in Sorted Array

17. Search Insert Position

18. Maximum Subarray

19. Length of Last Word

20. Rotate List

21. Plus One

22. Add Binary

23. Sqrt(x)

24. Climbing Stairs

25. Search a 2D Matrix

26. Search in Rotated Sorted Array II

27. Remove Duplicates from Sorted List II

28. Remove Duplicates from Sorted List

29. Partition List

30. Merge Sorted Array

31. Reverse Linked List II

32. Pascal's Triangle

33. Valid Palindrome

34. Single Number

35. Linked List Cycle

36. Linked List Cycle II

37. Insertion Sort List

38. Find Minimum in Rotated Sorted Array

39. Find Minimum in Rotated Sorted Array II

40. Intersection of Two Linked Lists

41. Two Sum II - Input array is sorted

42. Excel Sheet Column Title

43. Excel Sheet Column Number

44. Factorial Trailing Zeroes

45. Duplicate Emails

46. Customers Who Never Order

47. Remove Linked List Elements

48. Isomorphic Strings

49. Reverse Linked List

50. Minimum Size Subarray Sum

51. Contains Duplicate

52. Count Complete Tree Nodes

53. Summary Ranges

54. Power of Two

55. Palindrome Linked List

56. Delete Node in a Linked List

57. Valid Anagram

58. Add Digits

59. Ugly Number

60. Missing Number

61. First Bad Version

62. Move Zeroes

63. Word Pattern

64. Range Sum Query - Immutable

65. Odd Even Linked List

66. Reverse String

67. Reverse Vowels of a String

68. Intersection of Two Arrays

69. Intersection of Two Arrays II

70. Valid Perfect Square

71. Guess Number Higher or Lower

72. Ransom Note

73. First Unique Character in a String

74. Find the Difference

75. Is Subsequence

76. Binary Watch

77. Convert a Number to Hexadecimal

78. Longest Palindrome

79. Fizz Buzz

80. Third Maximum Number

81. Add Strings

82. Number of Segments in a String

83. Arranging Coins

84. Find All Numbers Disappeared in an Array

85. Assign Cookies

86. Repeated Substring Pattern

87. Hamming Distance

88. Island Perimeter

89. Number Complement

90. Max Consecutive Ones

91. Construct the Rectangle

92. Keyboard Row

93. Base 7

94. Perfect Number

95. Fibonacci Number

96. Detect Capital

97. Duplicate Zeros

98. Encode and Decode TinyURL

99. Student Attendance Record I

100. Reverse Words in a String III

101. Subarray Sum Equals K

102. Distribute Candies

103. Big Countries

104. Can Place Flowers

105. Not Boring Movies

106. Maximum Average Subarray I

107. Robot Return to Origin

108. Longest Continuous Increasing Subsequence

109. Baseball Game

110. Binary Number with Alternating Bits

111. Binary Search

112. Design HashSet

113. Design HashMap

114. To Lower Case

115. Find Pivot Index

116. Self Dividing Numbers

117. Find Smallest Letter Greater Than Target

118. Largest Number At Least Twice of Others

119. Shortest Completing Word

120. Prime Number of Set Bits in Binary Representation

121. Jewels and Stones

122. Rotate String

123. Unique Morse Code Words

124. Number of Lines To Write String

125. Max Increase to Keep City Skyline

126. Subdomain Visit Count

127. Goat Latin

128. Positions of Large Groups

129. Flipping an Image

130. Peak Index in a Mountain Array

131. Transpose Matrix

132. Middle of the Linked List

133. Projection Area of 3D Shapes

134. Uncommon Words from Two Sentences

135. Surface Area of 3D Shapes

136. Monotonic Array

137. Sort Array By Parity

138. Sort an Array

139. Unique Email Addresses

140. Number of Recent Calls

141. Valid Mountain Array

142. Delete Columns to Make Sorted

143. Verifying an Alien Dictionary

144. Subarray Sums Divisible by K

145. Squares of a Sorted Array

146. Add to Array-Form of Integer

147. Find the Town Judge

148. Find Common Characters

149. Complement of Base 10 Integer

150. Remove Outermost Parentheses

151. Remove All Adjacent Duplicates In String

152. Height Checker

153. Occurrences After Bigram

154. Defanging an IP Address

155. N-th Tribonacci Number

156. Prime Arrangements

157. Distance Between Bus Stops

158. Maximum Number of Balloons

159. Unique Number of Occurrences

160. Split a String in Balanced Strings

161. Check If It Is a Straight Line

162. Minimum Time Visiting All Points

163. Subtract the Product and Sum of Digits of an Integer

164. Group the People Given the Group Size They Belong To

165. Convert Binary Number in a Linked List to Integer

166. Find Numbers with Even Number of Digits

167. Replace Elements with Greatest Element on Right Side

168. Find N Unique Integers Sum up to Zero

169. Decrypt String from Alphabet to Integer Mapping

170. Decompress Run-Length Encoded List

171. Check If N and Its Double Exist

172. Generate a String With Characters That Have Odd Counts

173. Find Lucky Integer in an Array

174. Display Table of Food Orders in a Restaurant

175. Maximum 69 Number

176. Sort the Matrix Diag onally

177. Remove Palindromic Subsequences

178. Number of Steps to Reduce a Number to Zero

179. Check If N and Its Double Exist

180. Sort Integers by The Number of 1 Bits

181. How Many Numbers Are Smaller Than the Current Number

182. Create Target Array in the Given Order

183. String Matching in an Array

184. Queries on a Permutation With Key

185. Maximum Score After Splitting a String

186. Kids With the Greatest Number of Candies

187. Destination City

188. Check If All 1's Are at Least Length K Places Away

189. Build an Array With Stack Operations

190. Consecutive Characters

191. Number of Students Doing Homework at a Given Time

192. Check If a Word Occurs As a Prefix of Any Word in a Sentence

193. Maximum Product of Two Elements in an Array

194. Shuffle the Array

195. Subrectangle Queries

196. Running Sum of 1d Array

197. XOR Operation in an Array

198. Average Salary Excluding the Minimum and Maximum Salary

199. Path Crossing

200. Can Make Arithmetic Progression From Sequence

201. Reformat Date

202. Number of Good Pairs

203. Water Bottles

204. Count Odd Numbers in an Interval Range

205. Shuffle String

206. Count Good Triplets

207. Make The String Great

208. Three Consecutive Odds

209. Thousand Separator

210. Matrix Diagonal Sum

211. Sum of All Odd Length Subarrays

212. Crawler Log Folder

213. Design Parking System

214. Special Array With X Elements Greater Than or Equal X

215. Maximum Nesting Depth of the Parentheses

216. Slowest Key

217. Widest Vertical Area Between Two Poin ts Containing No Points

218. Design an Ordered Stream

219. Check If Two String Arrays are Equivalent

220. Richest Customer Wealth

221. Goal Parser Interpretation

222. Count the Number of Consistent Strings

223. Count of Matches in Tournament

224. Partitioning Into Minimum Number Of Deci-Binary Numbers

225. Reformat Phone Number

226. Determine if String Halves Are Alike

227. Maximum Units on a Truck

228. Calculate Money in Leetcode Bank

229. Decode XORed Array

230. Find the Highest Altitude

231. Latest Time by Replacing Hidden Digits

232. Sum of Unique Elements

233. Minimum Changes To Make Alternating Binary String

234. Merge Strings Alternately

235. Minimum Number of Operations to Move All Balls to Each Box

236. Count Items Matching a Rule

237. Find Center of Star Graph

238. Second Largest Digit in a String

239. Maximum Ascending Subarray Sum

240. Number of Different Integers in a String

241. Determine Color of a Chessboard Square

242. Truncate Sentence

243. Finding the Users Active Minutes

244. Sign of the Product of an Array

245. Minimum Operations to Make the Array Increasing

246. Queries on Number of Points Inside a Circle

247. Check if the Sentence Is Pangram

248. Maximum Ice Cream Bars

249. Sum of Digits in Base K

250. Check if Word Equals Summation of Two Words

251. Replace All Digits with Characters

252. Seat Reservation Manager

253. Sorting the Sentence

254. Sum of All Subset XOR Totals

255. Longer Contiguous Segments of Ones than Zeros

256. Find Target Indices After Sorting Array