Leetcode # Title Solution Topics 1 Two sum Java 2 Add Two Numbers Golang 3 Longest Substring Without Repeating Characters Scala 5 Longest Palindromic Substring Java 7 Reverse Integer C++ 9 Palindrome Number Golang 11 Container With Most Water Python two pointers 14 Longest Common Prefix Golang 21 Merge Two Sorted Lists Golang dummy head 26 Remove Duplicates from Sorted Array Kotlin two pointers 27 Remove Element Golang 35 Search Insert Position Golang binary search 43 Multiply Strings Golang 88 Merge Sorted Array Python two pointers 121 Best Time to Buy and Sell Stock Python two pointers 125 Valid Palindrome Kotlin two pointers 129 Sum Root to Leaf Numbers Golang 201 Contains Duplicate II Golang 203 Remove Linked List Elements Python 205 Isomorphic Strings Golang 206 Reverse Linked List Scala 225 Implement Stack using Queues Golang stack 237 Delete Node in a Linked List Python 242 Valid Anagram Golang 258 Add digits Python recursion 268 Missing Number Python math 283 Move Zeroes Kotlin two pointers 344 Reverse String Scala 347 Top K Frequent Elements Kotlin 349 Intersection of Two Arrays JavaScript 430 Flatten a Multilevel Doubly Linked List Java 438 Find All Anagrams in a String Golang 567 Permutation in String Golang 653 Two Sum IV - Input is a BST Golang 724 Find Pivot Index TypeScript 832 Flipping an Image Golang 917 Reverse Only Letters Golang 922 Sort Array By Parity II Golang 977 Squares of a Sorted Array Python two pointers 988 Smallest String Starting From Leaf Golang 1302 Deepest Leaves Sum Golang 1309 Decrypt String from Alphabet to Integer Mapping Rust 1436 Destination City Golang 1448 Count Good Nodes in Binary Tree Golang 1470 Shuffle the Array Python 1491 Average Salary Excluding the Minimum and Maximum Salary Golang 1588 Sum of All Odd Length Subarrays Golang 1769 Minimum Number of Operations to Move All Balls to Each Box Golang 1827 Minimum Operations to Make the Array Increasing Python greedy 2260 Minimum Consecutive Cards to Pick Up Golang 2461 Maximum Sum of Distinct Subarrays With Length K Python Sliding Window