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Introduction
Trees
Recursion & Backtracking
Maths
Binary Searching & Sorting
Strings
BIT Manipulation
Two Pointers
Arrays
Linked List
Stacks & Queues
HashMap & HashSet & Sliding Window
Priority Queue
Dynamic Programming
Greedy
Graphs, BFS & DFS
Geometry
Merge Sort
Segment Trees
Most consistent ways of dealing with the series of stock problems

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Strings

Number of Ways to Split a String Valid Anagram Palindrome String Minimum Characters required to make a String Palindromic Longest Common Prefix Count And Say Amazing Subarrays Longest Palindromic Substring Implement StrStr Compare Version Numbers Atoi Valid Number Valid Ip Addresses Length of Last Word Reverse the String Roman to Integer Integer To Roman Add Binary Strings Power of 2 Multiply Strings Text Justification ZigZag Conversion Pretty Json HTML Entity Parser Find All Anagrams in a String Check If a String Can Break Another String Minimum Swaps to Make Strings Equal Construct K Palindrome Strings Print Words Vertically First Unique Character in a String Longest Word in Dictionary through Deleting Check If a Word Occurs As a Prefix of Any Word in a Sentence Maximum Number of Vowels in a Substring of Given Length Reorganize String Permutation in String Long Pressed Name Orderly Queue Goat Latin One Edit Distance Is Subsequence Reverse Vowels of a String Valid Palindrome II Check if two strings are k-anagrams or not Permutation and Palindrome Light Up the Bulbs Number of Substrings With Only 1s Last Substring in Lexicographical Order Split Two Strings to Make Palindrome

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