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Skill Development Marathon

This page repository is used to track solutions published in the Telegram channel.

Solutions

Week 01

Day 001
- 🟢 2413. Smallest Even Multiple
- 🟡 2396. Strictly Palindromic Number
Day 002
- 🟢 9. Palindrome Number
- 🟡 7. Reverse Integer
Day 003
- 🟢 2119. A Number After a Double Reversal
- 🟡 2442. Count Number of Distinct Integers After Reverse Operations
Day 004
- 🟢 1342. Number of Steps to Reduce a Number to Zero
- 🟡 1641. Count Sorted Vowel Strings
Day 005
- 🟢 1480. Running Sum of 1d Array
- 🟡 1551. Minimum Operations to Make Array Equal
Day 006
- 🟢 13. Roman to Integer
- 🟡 12. Integer to Roman
Day 007
- 🟢 2520. Count the Digits That Divide a Number
- 🟡 48. Rotate Image

Week 02

Day 008
- 🟢 2652. Sum Multiples
- 🟡 2221. Find Triangular Sum of an Array
Day 009
- 🟢 1108. Defanging an IP Address
- 🟡 535. Encode and Decode TinyURL
Day 010
- 🟢 2011. Final Value of Variable After Performing Operations
- 🟡 189. Rotate Array
Day 011
- 🟢 1431. Kids With the Greatest Number of Candies
- 🟡 2610. Convert an Array Into a 2D Array With Conditions
Day 012
- 🟢 1672. Richest Customer Wealth
- 🟡 1476. Subrectangle Queries
Day 013
- 🟢 1929. Concatenation of Array
- 🟡 1769. Minimum Number of Operations to Move All Balls to Each Box
Day 014
- 🟢 2574. Left and Right Sum Differences
- 🟡 2161. Partition Array According to Given Pivot

Week 03

Day 015
- 🟢 2114. Maximum Number of Words Found in Sentences
- 🟡 2433. Find The Original Array of Prefix Xor
Day 016
- 🟢 1486. XOR Operation in an Array
- 🟡 2545. Sort the Students by Their Kth Score
Day 017
- 🟢 1528. Shuffle String
- 🟡 1637. Widest Vertical Area Between Two Points Containing No Points
Day 018
- 🟢 1773. Count Items Matching a Rule
- 🟡 2149. Rearrange Array Elements by Sign
Day 019
- 🟢 1684. Count the Number of Consistent Strings
- 🟡 2482. Difference Between Ones and Zeros in Row and Column
Day 020
- 🟢 1720. Decode XORed Array
- 🟡 2657. Find the Prefix Common Array of Two Arrays
Day 021
- 🟢 1290. Convert Binary Number in a Linked List to Integer
- 🟡 2181. Merge Nodes in Between Zeros

Week 04

Day 022
- 🟢 876. Middle of the Linked List
- 🟡 1669. Merge In Between Linked Lists
Day 023
- 🟢 206. Reverse Linked List
- 🟡 237. Delete Node in a Linked List
Day 024
- 🟢 21. Merge Two Sorted Lists
- 🟡 382. Linked List Random Node
Day 025
- 🟢 160. Intersection of Two Linked Lists
- 🟡 2130. Maximum Twin Sum of a Linked List
Day 026
- 🟢 234. Palindrome Linked List
- 🟡 1721. Swapping Nodes in a Linked List
Day 027
- 🟢 83. Remove Duplicates from Sorted List
- 🟡 1472. Design Browser History
Day 028
- 🟢 705. Design HashSet
- 🟡 24. Swap Nodes in Pairs

Week 05

Day 029
- 🟢 706. Design HashMap
- 🟡 2326. Spiral Matrix IV
Day 030
- 🟢 141. Linked List Cycle
- 🟡 142. Linked List Cycle II
Day 031
- 🟢 203. Remove Linked List Elements
- 🟡 2487. Remove Nodes From Linked List
Day 032
- 🟢 771. Jewels and Stones
- 🟡 2391. Minimum Amount of Time to Collect Garbage
Day 033
- 🟢 94. Binary Tree Inorder Traversal
- 🟡 98. Validate Binary Search Tree
Day 034
- 🟢 144. Binary Tree Preorder Traversal
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Day 035
- 🟢 145. Binary Tree Postorder Traversal
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Week 6

Day 036
- 🟢 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
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Day 037
- 🟢 700. Search in a Binary Search Tree
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Day 038
- 🟢 617. Merge Two Binary Trees
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Day 039
- 🟢 226. Invert Binary Tree
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Day 040
- 🟢 2236. Root Equals Sum of Children
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Day 041
- 🟢 637. Average of Levels in Binary Tree
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Day 042
- 🟢 108. Convert Sorted Array to Binary Search Tree
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Week 7

Day 043
- 🟢 872. Leaf-Similar Trees
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Day 044
- 🟢 606. Construct String from Binary Tree
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Day 045
- 🟢 257. Binary Tree Paths
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Day 046
- 🟢 653. Two Sum IV - Input is a BST
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Day 047
- 🟢 783. Minimum Distance Between BST Nodes
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Day 048
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Day 049
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Week 8

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Week 9

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Week 10

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Week 11

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Week 12

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Week 13

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Week 14

Day 092
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Day 093
- 🟢 2367. Number of Arithmetic Triplets
- 🟡 1630. Arithmetic Subarrays
Day 094
- 🟢 2373. Largest Local Values in a Matrix
- 🟡 1817. Finding the Users Active Minutes
Day 095
- 🟢 804. Unique Morse Code Words
- 🟡 2079. Watering Plants
Day 096
- 🟢 1732. Find the Highest Altitude
- 🟡 1561. Maximum Number of Coins You Can Get
Day 097
- 🟢 1913. Maximum Product Difference Between Two Pairs
- 🟡 1605. Find Valid Matrix Given Row and Column Sums
Day 098
- 🟢 2744. Find Maximum Number of String Pairs
- 🟡 46. Permutations

Week 15

Day 099
- 🟢 1266. Minimum Time Visiting All Points
- 🟡 890. Find and Replace Pattern