Hy all.

My name is Alexander, and I present in this public repository the solutions to tasks I completed from the Leetcode.com website.

List of the 92 problems.

• 0001. Two Sum
• 0002. Add Two Numbers
• 0003. Longest Substring Without Repeating Characters
• 0004. Median of Two Sorted Arrays
• 0009. Palindrome Number
• 0012. Integer to Roman
• 0013. Roman to Integer
• 0027. Remove Element
• 0032. Longest Valid Parentheses
• 0061. Rotate List
• 0075. Sort Colors
• 0101. Symmetric Tree
• 0107. Binary Tree Level Order Traversal II
• 0111. Minimum Depth of Binary Tree
• 0112. Path Sum
• 0113. Path Sum II
• 0121. Best Time to Buy and Sell Stock
• 0124. Binary Tree Maximum Path Sum
• 0125. Valid Palindrome
• 0204. Basic Calculator
• 0515. Find Largest Value in Each Tree Row
• 0684. Redundant Connection
• 0769. Max Chunks To Make Sorted
• 0802. Find Eventual Safe States
• 0827. Making A Large Island
• 0916. Word Subsets
• 0965. Univalued Binary Tree
• 1014. Best Sightseeing Pair
• 1267. Count Servers that Communicate
• 1346. Check If N and Its Double Exist
• 1368. Minimum Cost to Make at Least One Valid Path in a Grid
• 1400. Construct K Palindrome Strings
• 1408. String Matching in an Array
• 1422. Maximum Score After Splitting a String
• 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
• 1462. Course Schedule IV
• 1475. Final Prices With a Special Discount in a Shop
• 1574. Shortest Subarray to be Removed to Make Array Sorted
• 1652. Defuse the Bomb
• 1726. Tuple with Same Product
• 1752. Check if Array Is Sorted and Rotated
• 1760. Minimum Limit of Balls in a Bag
• 1765. Map of Highest Peak
• 1769. Minimum Number of Operations to Move All Balls to Each Box
• 1790. Check if One String Swap Can Make Strings Equal
• 1792. Maximum Average Pass Ratio
• 1800. Maximum Ascending Subarray Sum
• 1910. Remove All Occurrences of a Substring
• 1930. Unique Length-3 Palindromic Subsequences
• 2017. Grid Game
• 2064. Minimized Maximum of Products Distributed to Any Store
• 2070. Most Beautiful Item for Each Query
• 2109. Adding Spaces to a String
• 2182. Construct String With Repeat Limit
• 2185. Counting Words With a Given Prefix
• 2116. Check if a Parentheses String Can Be Valid
• 2270. Number of Ways to Split Array
• 2337. Move Pieces to Obtain a String
• 2342. Max Sum of a Pair With Equal Sum of Digits
• 2349. Design a Number Container System
• 2364. Count Number of Bad Pairs
• 2381. Shifting Letters II
• 2415. Reverse Odd Levels of Binary Tree
• 2425. Bitwise XOR of All Pairings
• 2429. Minimize XOR
• 2458. Height of Binary Tree After Subtree Removal Queries
• 2471. Minimum Number of Operations to Sort a Binary Tree by Level
• 2554. Maximum Number of Integers to Choose From a Range I
• 2558. Take Gifts From the Richest Pile
• 2559. Count Vowel Strings in Ranges
• 2593. Find Score of an Array After Marking All Elements
• 2601. Prime Subtraction Operation
• 2657. Find the Prefix Common Array of Two Arrays
• 2658. Maximum Number of Fish in a Grid
• 2661. First Completely Painted Row or Column
• 2683. Neighboring Bitwise XOR
• 2779. Maximum Beauty of an Array After Applying Operation
• 2825. Make String a Subsequence Using Cyclic Increments
• 2872. Maximum Number of K-Divisible Components
• 2948. Make Lexicographically Smallest Array by Swapping Elements
• 2981. Find Longest Special Substring That Occurs Thrice I
• 3042. Count Prefix and Suffix Pairs I
• 3066. Minimum Operations to Exceed Threshold Value II
• 3097. Shortest Subarray With OR at Least K II
• 3105. Longest Strictly Increasing or Strictly Decreasing Subarray
• 3151. Special Array I
• 3152. Special Array II
• 3160. Find the Number of Distinct Colors Among the Balls
• 3174. Clear Digits
• 3223. Minimum Length of String After Operations
• 3254. Find the Power of K-Size Subarrays I
• 3264. Final Array State After K Multiplication Operations I

If my approach to solving problems was interesting to you, I’m glad.