Files

SQL
algorithms
array
backtracking
competitive programming
- codechef
- codeforces
- cses
- hackerearth
- hackerrank
- interviewbit
- leetcode
  - 2020-August-Challenge
  - 2020-December-Challenge
  - 2020-July-Challenge
    - Day-01-Arranging Coins.cpp
    - Day-02-Binary Tree Level Order Traversal II.cpp
    - Day-03-Prison Cells After N Days.cpp
    - Day-04-Ugly Number II.cpp
    - Day-05-Hamming Distance.cpp
    - Day-06-Plus One.cpp
    - Day-07-Island Perimeter.cpp
    - Day-08-3Sum.cpp
    - Day-09-Maximum Width of Binary Tree.cpp
    - Day-10-Flatten a Multilevel Doubly Linked List.cpp
    - Day-11-Subsets.cpp
    - Day-12-Reverse Bits.cpp
    - Day-13-Same Tree.cpp
    - Day-14-Angle Between Hands of a Clock.cpp
    - Day-15-Reverse Words in a String.cpp
    - Day-16-Pow(x, n).cpp
    - Day-17-Top K Frequent Elements.cpp
    - Day-18-Course Schedule II.cpp
    - Day-19-Add Binary.cpp
    - Day-20-Remove Linked List Elements.cpp
    - Day-21-Word Search.cpp
    - Day-22-Binary Tree Zigzag Level Order Traversal.cpp
    - Day-23-Single Number III.cpp
    - Day-24-All Paths From Source to Target.cpp
    - Day-25-Find Minimum in Rotated Sorted Array II.cpp
    - Day-26-Add Digits.cpp
    - Day-27-Construct Binary Tree from Inorder and Postorder Traversal.cpp
    - Day-28-Task Scheduler.cpp
    - Day-29-Best Time to Buy and Sell Stock with Cooldown.cpp
    - Day-30-Word Break II.cpp
    - Day-31-Climbing Stairs.cpp
  - 2020-June-Challenge
  - 2020-November-Challenge
  - 2020-October-Challenge
  - 2020-September-Challenge
  - 2021-June-Challenge
  - 1. Two Sum.cpp
  - 100. Same Tree.cpp
  - 1002. Find Common Characters.cpp
  - 1004. Max Consecutive Ones III.cpp
  - 1009. Complement of Base 10 Integer.cpp
  - 101. Symmetric Tree.cpp
  - 1010. Pairs of Songs With Total Durations Divisible by 60.cpp
  - 102. Binary Tree Level Order Traversal.cpp
  - 1021. Remove Outermost Parentheses.cpp
  - 1022. Sum of Root To Leaf Binary Numbers.cpp
  - 1025. Divisor Game.cpp
  - 1029. Two City Scheduling.cpp
  - 103. Binary Tree Zigzag Level Order Traversal.cpp
  - 1032. Stream of Characters.cpp
  - 1037. Valid Boomerang.cpp
  - 104. Maximum Depth of Binary Tree.cpp
  - 1041. Robot Bounded In Circle.cpp
  - 1047. Remove All Adjacent Duplicates In String.cpp
  - 105. Construct Binary Tree from Preorder and Inorder Traversal.cpp
  - 1051. Height Checker.cpp
  - 106. Construct Binary Tree from Inorder and Postorder Traversal.cpp
  - 107. Binary Tree Level Order Traversal II.cpp
  - 108. Convert Sorted Array to Binary Search Tree.cpp
  - 1094. Car Pooling.cpp
  - 110. Balanced Binary Tree.cpp
  - 1103. Distribute Candies to People.cpp
  - 1108. Defanging an IP Address.cpp
  - 1122. Relative Sort Array.cpp
  - 113. Path Sum II.cpp
  - 1137. N-th Tribonacci Number.cpp
  - 114. Flatten Binary Tree to Linked List.cpp
  - 1143. Longest Common Subsequence.cpp
  - 116. Populating Next Right Pointers in Each Node.cpp
  - 1160. Find Words That Can Be Formed by Characters.cpp
  - 1170. Compare Strings by Frequency of the Smallest Character.cpp
  - 118. Pascal's Triangle.cpp
  - 1189. Maximum Number of Balloons.cpp
  - 119. Pascal's Triangle II.cpp
  - 12. Integer to Roman.cpp
  - 121. Best Time to Buy and Sell Stock.cpp
  - 122. Best Time to Buy and Sell Stock II.cpp
  - 1221. Split a String in Balanced Strings.cpp
  - 123. Best Time to Buy and Sell Stock III.cpp
  - 1232. Check If It Is a Straight Line.cpp
  - 124. Binary Tree Maximum Path Sum.cpp
  - 125. Valid Palindrome.cpp
  - 1252. Cells with Odd Values in a Matrix.cpp
  - 1266. Minimum Time Visiting All Points.cpp
  - 128. Longest Consecutive Sequence.cpp
  - 1286. Iterator for Combination.cpp
  - 1288. Remove Covered Intervals.cpp
  - 129. Sum Root to Leaf Numbers.cpp
  - 1290. Convert Binary Number in a Linked List to Integer.cpp
  - 1291. Sequential Digits.cpp
  - 1295. Find Numbers with Even Number of Digits.cpp
  - 1299. Replace Elements with Greatest Element on Right Side.cpp
  - 13. Roman to Integer.cpp
  - 130. Surrounded Regions.cpp
  - 1304. Find N Unique Integers Sum up to Zero.cpp
  - 1305. All Elements in Two Binary Search Trees.cpp
  - 1309. Decrypt String from Alphabet to Integer Mapping.cpp
  - 131. Palindrome Partitioning.cpp
  - 1313. Decompress Run-Length Encoded List.cpp
  - 132. Palindrome Partitioning II.cpp
  - 1323. Maximum 69 Number.cpp
  - 133. Clone Graph.cpp
  - 1332. Remove Palindromic Subsequences.cpp
  - 1337. The K Weakest Rows in a Matrix.cpp
  - 134. Gas Station.cpp
  - 1342. Number of Steps to Reduce a Number to Zero.cpp
  - 1344. Angle Between Hands of a Clock.cpp
  - 1347. Minimum Number of Steps to Make Two Strings Anagram.cpp
  - 135. Candy.cpp
  - 1351. Count Negative Numbers in a Sorted Matrix.cpp
  - 136. Single Number.cpp
  - 1365. How Many Numbers Are Smaller Than the Current Number.cpp
  - 137. Single Number II.cpp
  - 1370. Increasing Decreasing String.cpp
  - 1374. Generate a String With Characters That Have Odd Counts.cpp
  - 138. Copy List with Random Pointer.cpp
  - 1380. Lucky Numbers in a Matrix.cpp
  - 1385. Find the Distance Value Between Two Arrays.cpp
  - 1387. Sort Integers by The Power Value.cpp
  - 1389. Create Target Array in the Given Order.cpp
  - 139. Word Break.cpp
  - 14. Longest Common Prefix.cpp
  - 1401A - Distance and Axis.cpp
  - 1408. String Matching in an Array.cpp
  - 141. Linked List Cycle.cpp
  - 142. Linked List Cycle II.cpp
  - 143. Reorder List.cpp
  - 1431. Kids With the Greatest Number of Candies.cpp
  - 1436. Destination City.cpp
  - 144. Binary Tree Preorder Traversal.cpp
  - 1441. Build an Array With Stack Operations.cpp
  - 1446. Consecutive Characters.cpp
  - 1448. Count Good Nodes in Binary Tree.cpp
  - 145. Binary Tree Postorder Traversal.cpp
  - 1450. Number of Students Doing Homework at a Given Time.cpp
  - 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence.cpp
  - 146. LRU Cache.cpp
  - 1460. Make Two Arrays Equal by Reversing Sub-arrays.cpp
  - 1464. Maximum Product of Two Elements in an Array.cpp
  - 147. Insertion Sort List.cpp
  - 1470. Shuffle the Array.cpp
  - 1475. Final Prices With a Special Discount in a Shop.cpp
  - 148. Sort List.cpp
  - 1480. Running Sum of 1d Array.cpp
  - 1486. XOR Operation in an Array.cpp
  - 1491. Average Salary Excluding the Minimum and Maximum Salary.cpp
  - 1492. The kth Factor of n.cpp
  - 15. 3Sum.cpp
  - 1502. Can Make Arithmetic Progression From Sequence.cpp
  - 1507. Reformat Date.cpp
  - 151. Reverse Words in a String.cpp
  - 1512. Number of Good Pairs.cpp
  - 152. Maximum Product Subarray.cpp
  - 1534. Count Good Triplets.cpp
  - 154. Find Minimum in Rotated Sorted Array II.cpp
  - 1544. Make The String Great.cpp
  - 1550. Three Consecutive Odds.cpp
  - 1551. Minimum Operations to Make Array Equal.cpp
  - 1553. Minimum Number of Days to Eat N Oranges.cpp
  - 1556. Thousand Separator.cpp
  - 1557. Minimum Number of Vertices to Reach All Nodes.cpp
  - 1560. Most Visited Sector in a Circular Track.cpp
  - 1572. Matrix Diagonal Sum.cpp
  - 1576. Replace All 's to Avoid Consecutive Repeating Characters.cpp
  - 1577. Number of Ways Where Square of Number Is Equal to Product of Two Numbers.cpp
  - 1578. Minimum Deletion Cost to Avoid Repeating Letters.cpp
  - 1582. Special Positions in a Binary Matrix.cpp
  - 1588. Sum of All Odd Length Subarrays.cpp
  - 1592. Rearrange Spaces Between Words.cpp
  - 1598. Crawler Log Folder.cpp
  - 160. Intersection of Two Linked Lists.cpp
  - 1608. Special Array With X Elements Greater Than or Equal X.cpp
  - 1609. Even Odd Tree.cpp
  - 1614. Maximum Nesting Depth of the Parentheses.cpp
  - 1615. Maximal Network Rank.cpp
  - 1624. Largest Substring Between Two Equal Characters.cpp
  - 1629. Slowest Key.cpp
  - 1630. Arithmetic Subarrays.cpp
  - 1641. Count Sorted Vowel Strings.cpp
  - 165. Compare Version Numbers.cpp
  - 1656. Design an Ordered Stream.cpp
  - 1657. Determine if Two Strings Are Close.cpp
  - 168. Excel Sheet Column Title.cpp
  - 169. Majority Element.cpp
  - 171. Excel Sheet Column Number.cpp
  - 1716. Calculate Money in Leetcode Bank.cpp
  - 172. Factorial Trailing Zeroes.cpp
  - 173. Binary Search Tree Iterator.cpp
  - 174. Dungeon Game.cpp
  - 179. Largest Number.cpp
  - 18. 4Sum.cpp
  - 1854. Maximum Population Year.cpp
  - 1855. Maximum Distance Between a Pair of Values.cpp
  - 1863. Sum of All Subset XOR Totals.cpp
  - 1864. Minimum Number of Swaps to Make the Binary String Alternating.cpp
  - 1880. Check if Word Equals Summation of Two Words.cpp
  - 1881. Maximum Value after Insertion.cpp
  - 1884. Egg Drop With 2 Eggs and N Floors.cpp
  - 19. Remove Nth Node From End of List.cpp
  - 190. Reverse Bits.cpp
  - 191. Number of 1 Bits.cpp
  - 1913. Maximum Product Difference Between Two Pairs.cpp
  - 1914. Cyclically Rotating a Grid.cpp
  - 198. House Robber.cpp
  - 2. Add Two Numbers.cpp
  - 200. Number of Islands.cpp
  - 203. Remove Linked List Elements.cpp
  - 204. Count Primes.cpp
  - 206. Reverse Linked List.cpp
  - 207. Course Schedule.cpp
  - 21. Merge Two Sorted Lists.cpp
  - 210. Course Schedule II.cpp
  - 211. Add and Search Word - Data structure design.cpp
  - 212. Word Search II.cpp
  - 213. House Robber II.cpp
  - 215. Kth Largest Element in an Array.cpp
  - 216. Combination Sum III.cpp
  - 220. Contains Duplicate III.cpp
  - 221. Maximal Square.cpp
  - 222. Count Complete Tree Nodes.cpp
  - 226. Invert Binary Tree.cpp
  - 229. Majority Element II.cpp
  - 230. Kth Smallest Element in a BST.cpp
  - 231. Power of Two.cpp
  - 234. Palindrome Linked List.cpp
  - 235. Lowest Common Ancestor of a Binary Search Tree.cpp
  - 236. Lowest Common Ancestor of a Binary Tree.cpp
  - 237. Delete Node in a Linked List.cpp
  - 239. Sliding Window Maximum.cpp
  - 242. Valid Anagram.cpp
  - 25. Reverse Nodes in k-Group.cpp
  - 258. Add Digits.cpp
  - 26. Remove Duplicates from Sorted Array.cpp
  - 260. Single Number III.cpp
  - 264. Ugly Number II.cpp
  - 268. Missing Number.cpp
  - 274. H-Index.cpp
  - 275. H-Index II.cpp
  - 279. Perfect Squares.cpp
  - 28. Implement strStr().cpp
  - 283. Move Zeroes.cpp
  - 287. Find the Duplicate Number.cpp
  - 29. Divide Two Integers.cpp
  - 290. Word Pattern.cpp
  - 295. Find Median from Data Stream.cpp
  - 297. Serialize and Deserialize Binary Tree.cpp
  - 299. Bulls and Cows.cpp
  - 3. Longest Substring Without Repeating Characters.cpp
  - 300. Longest Increasing Subsequence.cpp
  - 303. Range Sum Query - Immutable.cpp
  - 309. Best Time to Buy and Sell Stock with Cooldown.cpp
  - 31. Next Permutation.cpp
  - 316. Remove Duplicate Letters.cpp
  - 322. Coin Change.cpp
  - 326. Power of Three.cpp
  - 33. Search in Rotated Sorted Array.cpp
  - 332. Reconstruct Itinerary.cpp
  - 338. Counting Bits.cpp
  - 34. Find First and Last Position of Element in Sorted Array.cpp
  - 342. Power of Four.cpp
  - 344. Reverse String.cpp
  - 347. Top K Frequent Elements.cpp
  - 35. Search Insert Position.cpp
  - 36. Valid Sudoku.cpp
  - 367. Valid Perfect Square.cpp
  - 368. Largest Divisible Subset.cpp
  - 38. Count and Say.cpp
  - 380. Insert Delete GetRandom O(1).cpp
  - 382. Linked List Random Node.cpp
  - 389. Find the Difference.cpp
  - 39. Combination Sum.cpp
  - 392. Is Subsequence.cpp
  - 40. Combination Sum II.cpp
  - 404. Sum of Left Leaves.cpp
  - 406. Queue Reconstruction by Height.cpp
  - 409. Longest Palindrome.cpp
  - 412. Fizz Buzz.cpp
  - 415. Add Strings.cpp
  - 416. Partition Equal Subset Sum.cpp
  - 42. Trapping Rain Water.cpp
  - 429. N-ary Tree Level Order Traversal.cpp
  - 430. Flatten a Multilevel Doubly Linked List.cpp
  - 435. Non-overlapping Intervals.cpp
  - 436. Find Right Interval.cpp
  - 438. Find All Anagrams in a String.cpp
  - 441. Arranging Coins.cpp
  - 442. Find All Duplicates in an Array.cpp
  - 448. Find All Numbers Disappeared in an Array.cpp
  - 449. Serialize and Deserialize BST.cpp
  - 452. Minimum Number of Arrows to Burst Balloons.cpp
  - 454. 4Sum II.cpp
  - 459. Repeated Substring Pattern.cpp
  - 46. Permutations.cpp
  - 461. Hamming Distance.cpp
  - 463. Island Perimeter.cpp
  - 468. Validate IP Address.cpp
  - 470. Implement Rand10() Using Rand7().cpp
  - 476. Number Complement.cpp
  - 477. Total Hamming Distance.cpp
  - 48. Rotate Image.cpp
  - 485. Max Consecutive Ones.cpp
  - 49. Group Anagrams.cpp
  - 495. Teemo Attacking.cpp
  - 496. Next Greater Element I.cpp
  - 5. Longest Palindromic Substring.cpp
  - 50. Pow(x, n).cpp
  - 507. Perfect Number.cpp
  - 509. Fibonacci Number.cpp
  - 518. Coin Change 2.cpp
  - 520. Detect Capital.cpp
  - 528. Random Pick with Weight.cpp
  - 53. Maximum Subarray.cpp
  - 532. K-diff Pairs in an Array.cpp
  - 54. Spiral Matrix.cpp
  - 543. Diameter of Binary Tree.cpp
  - 557. Reverse Words in a String III.cpp
  - 56. Merge Intervals.cpp
  - 560. Subarray Sum Equals K.cpp
  - 561. Array Partition I.cpp
  - 58. Length of Last Word.cpp
  - 59. Spiral Matrix II.cpp
  - 593. Valid Square.cpp
  - 60. Permutation Sequence.cpp
  - 605. Can Place Flowers.cpp
  - 61. Rotate List.cpp
  - 62. Unique Paths.cpp
  - 621. Task Scheduler.cpp
  - 633. Sum of Square Numbers.cpp
  - 64. Minimum Path Sum.cpp
  - 645. Set Mismatch.cpp
  - 653. Two Sum IV - Input is a BST.cpp
  - 657. Robot Return to Origin.cpp
  - 658. Find K Closest Elements.cpp
  - 66. Plus One.cpp
  - 662. Maximum Width of Binary Tree.cpp
  - 67. Add Binary.cpp
  - 682. Baseball Game.cpp
  - 686. Repeated String Match.cpp
  - 69. Sqrt(x).cpp
  - 693. Binary Number with Alternating Bits.cpp
  - 695. Max Area of Island.cpp
  - 7. Reverse Integer.cpp
  - 70. Climbing Stairs.cpp
  - 700. Search in a Binary Search Tree.cpp
  - 701. Insert into a Binary Search Tree.cpp
  - 703. Kth Largest Element in a Stream.cpp
  - 704. Binary Search.cpp
  - 705. Design HashSet.cpp
  - 709. To Lower Case.cpp
  - 72. Edit Distance.cpp
  - 73. Set Matrix Zeroes.cpp
  - 733. Flood Fill.cpp
  - 743. Network Delay Time.cpp
  - 746. Min Cost Climbing Stairs.cpp
  - 75. Sort Colors.cpp
  - 767. Reorganize String.cpp
  - 771. Jewels and Stones.cpp
  - 775. Global and Local Inversions.cpp
  - 78. Subsets.cpp
  - 785. Is Graph Bipartite.cpp
  - 787. Cheapest Flights Within K Stops.cpp
  - 788. Rotated Digits.cpp
  - 79. Word Search.cpp
  - 797. All Paths From Source to Target.cpp
  - 8. String to Integer (atoi).cpp
  - 80. Remove Duplicates from Sorted Array II.cpp
  - 804. Unique Morse Code Words.cpp
  - 824. Goat Latin.cpp
  - 832. Flipping an Image.cpp
  - 836. Rectangle Overlap.cpp
  - 84. Largest Rectangle in Histogram.cpp
  - 859. Buddy Strings.cpp
  - 865. Smallest Subtree with all the Deepest Nodes.cpp
  - 867. Transpose Matrix.cpp
  - 876. Middle of the Linked List.cpp
  - 887. Super Egg Drop.cpp
  - 890. Find and Replace Pattern.cpp
  - 893. Groups of Special-Equivalent Strings.cpp
  - 897. Increasing Order Search Tree.cpp
  - 9. Palindrome Number.cpp
  - 90. Subsets II.cpp
  - 904. Fruit Into Baskets.cpp
  - 905. Sort Array By Parity.cpp
  - 908. Smallest Range I.cpp
  - 91. Decode Ways.cpp
  - 914. X of a Kind in a Deck of Cards.cpp
  - 92. Reverse Linked List II.cpp
  - 922. Sort Array By Parity II.cpp
  - 926. Flip String to Monotone Increasing.cpp
  - 929. Unique Email Addresses.cpp
  - 933. Number of Recent Calls.cpp
  - 94. Binary Tree Inorder Traversal.cpp
  - 941. Valid Mountain Array.cpp
  - 949. Largest Time for Given Digits.cpp
  - 952. Largest Component Size by Common Factor.cpp
  - 954. Array of Doubled Pairs.cpp
  - 957. Prison Cells After N Days.cpp
  - 96. Unique Binary Search Trees.cpp
  - 967. Numbers With Same Consecutive Differences.cpp
  - 970. Powerful Integers.cpp
  - 973. K Closest Points to Origin.cpp
  - 977. Squares of a Sorted Array.cpp
  - 98. Validate Binary Search Tree7. Reverse Integer.cpp
  - 983. Minimum Cost For Tickets.cpp
  - 987. Vertical Order Traversal of a Binary Tree.cpp
  - 994. Rotting Oranges..cpp
  - 997. Find the Town Judge.cpp
  - 999. Available Captures for Rook.cpp
  - README.MD
  - Stone Game.cpp
dynamic programming
graph
linked list
mathematical
matrix
recursion
sliding window
stack
string
tree
.gitignore
LICENSE
README.md

2020-July-Challenge

sureshmangs

🚀 02-Aug-2020

Aug 2, 2020

a78ef1f · Aug 2, 2020

History

This branch is 6 commits behind sureshmangs/Code:master.

Name		Name	Last commit message	Last commit date
parent directory ..
Day-01-Arranging Coins.cpp		Day-01-Arranging Coins.cpp
Day-02-Binary Tree Level Order Traversal II.cpp		Day-02-Binary Tree Level Order Traversal II.cpp
Day-03-Prison Cells After N Days.cpp		Day-03-Prison Cells After N Days.cpp
Day-04-Ugly Number II.cpp		Day-04-Ugly Number II.cpp
Day-05-Hamming Distance.cpp		Day-05-Hamming Distance.cpp
Day-06-Plus One.cpp		Day-06-Plus One.cpp
Day-07-Island Perimeter.cpp		Day-07-Island Perimeter.cpp
Day-08-3Sum.cpp		Day-08-3Sum.cpp
Day-09-Maximum Width of Binary Tree.cpp		Day-09-Maximum Width of Binary Tree.cpp
Day-10-Flatten a Multilevel Doubly Linked List.cpp		Day-10-Flatten a Multilevel Doubly Linked List.cpp
Day-11-Subsets.cpp		Day-11-Subsets.cpp
Day-12-Reverse Bits.cpp		Day-12-Reverse Bits.cpp
Day-13-Same Tree.cpp		Day-13-Same Tree.cpp
Day-14-Angle Between Hands of a Clock.cpp		Day-14-Angle Between Hands of a Clock.cpp
Day-15-Reverse Words in a String.cpp		Day-15-Reverse Words in a String.cpp
Day-16-Pow(x, n).cpp		Day-16-Pow(x, n).cpp
Day-17-Top K Frequent Elements.cpp		Day-17-Top K Frequent Elements.cpp
Day-18-Course Schedule II.cpp		Day-18-Course Schedule II.cpp
Day-19-Add Binary.cpp		Day-19-Add Binary.cpp
Day-20-Remove Linked List Elements.cpp		Day-20-Remove Linked List Elements.cpp
Day-21-Word Search.cpp		Day-21-Word Search.cpp
Day-22-Binary Tree Zigzag Level Order Traversal.cpp		Day-22-Binary Tree Zigzag Level Order Traversal.cpp
Day-23-Single Number III.cpp		Day-23-Single Number III.cpp
Day-24-All Paths From Source to Target.cpp		Day-24-All Paths From Source to Target.cpp
Day-25-Find Minimum in Rotated Sorted Array II.cpp		Day-25-Find Minimum in Rotated Sorted Array II.cpp
Day-26-Add Digits.cpp		Day-26-Add Digits.cpp
Day-27-Construct Binary Tree from Inorder and Postorder Traversal.cpp		Day-27-Construct Binary Tree from Inorder and Postorder Traversal.cpp
Day-28-Task Scheduler.cpp		Day-28-Task Scheduler.cpp
Day-29-Best Time to Buy and Sell Stock with Cooldown.cpp		Day-29-Best Time to Buy and Sell Stock with Cooldown.cpp
Day-30-Word Break II.cpp		Day-30-Word Break II.cpp
Day-31-Climbing Stairs.cpp		Day-31-Climbing Stairs.cpp

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