README.md

neetcode150

• Stack

SL No.	Question	Solution
1	Valid Parenthesis	valid.cpp
2	Min Stack	minstack.cpp
3	Evaluate Reverse Polish Notation	postfixeval.cpp
4	Generate Parentheses	genParen.cpp
5	Daily Temperature	dailyTemp.cpp
6	Car Fleet	carfleet.cpp



• Arrays

SL No.	Question	Solution
1	Contains Duplicate	duplicate.cpp
2	Valid Anagrams	anagram.cpp
3	Two Sum	twosum.cpp
4	Group Anagrams	groupAnagram.coo
5	Top K Frequent Elements	topkele.cpp
6	Product of Array Except Self	pdtOfArr.cpp
7	Valid Sudoku	sudoku.cpp



• Two Pointers

SL No.	Question	Solution
1	Valid Palindrome	valpal.cpp
2	Two Sum II Input Array is Sorted	twoSumII.cpp
	Two Sum II Input Array is Sorted	maxwater.cpp



• Binary Search

SL No.	Question	Solution
1	Binary Search	search.cpp
2	Search a 2D Matrix	search2D.cpp

• Sliding Window

SL No.	Question	Solution
1	Best Time to Buy and Sell Stock	search.cpp
	Longest Substring Without Repeating Characters	search.cpp
2	Longest Repeating Characters	search2D.cpp

• Linked List

SL No.	Question	Solution
1	Binary Search	search.cpp
2	Search a 2D Matrix	search2D.cpp

• Bit Manipulation

SL No.	Question	Solution
1	Single Number	singlenum.cpp
2	Number of 1 bits	search2D.cpp

• Trees

SL No.	Question	Solution
1	Invert Binary Tree	invertbintree.cpp

• Greedy

SL No.	Question	Solution
1	Maximum Subarray	maxsubarray.py
2	Valid Parenthesis String	valPalStr.py

interview150

SL No.	Question	Solution	Topic
1	Merge Sorted Array	mergeArrays.cpp	Array/String
2	Remove Element	remove.cpp	Array/String
3	Remove duplicates from sorted array	remove.cpp	Array/String
4	Remove duplicates from sorted array - II	remove.cpp	Array/String
5	Majority Element	remove.cpp	Array/String
6	Rotate array	remove.cpp	Array/String
7	Best Time to Buy and Sell Stock	remove.cpp	Array/String
	Merge Intervals	remove.cpp	Intervals
	Insert Interval	remove.cpp	Interval
	Invert Binary Tree	invertbintree.cpp	Binary Tree General
	Same Tree	sametree.cpp	Binary Tree General
	Sum Root to Leaf Numbers	sumroottolead.cpp	Binary Tree General
	Maximum Subarray	maxsubarray.py	Kadane's Algorithm