samahuja642 / leetcode

LeetCode Problems

Arrays

S.no	Title	Problem	Solution	Difficulty	Revisit Require
1.	Two Sum	Problem	Solution	Easy	Yes
2.	Duplicate Zeroes	Problem	Solution	Easy	No
3.	Maximum Consecutive Ones	Problem	Solution	Easy	No
4.	Finding Numbers with Even Number of Digits	Problem	Solution	Easy	No
5.	Squares of a Sorted Array	Problem	Solution	Easy	Yes Two Pointer Approach
6.	Merge Sorted Array	Problem	Solution	Easy	No
7.	Remove Element	Problem	SolutionSolution2	Easy	No
8.	Remove Duplicates from Sorted Array	Problem	Solution	Easy	Yes but for Brute force approach
9.	Check If N and Its Double Exist	Problem	Solution	Easy	No
10.	Valid Mountain Array	Problem	Solution	Easy	No
11.	Replace Elements with Greatest Element on Right Side	Problem	Solution	Easy	No
12.	Move Zeroes	Problem	Solution	Easy	No
13.	Sort Array By Parity	Problem	Solution	Easy	Yes coding structure can be improved
14.	Height Checker	Problem	Solution	Easy	Yes Merge Sort
15.	Third Maximum Number	Problem	Solution	Easy	Yes
16.	Find All Numbers Disappeared in an Array	Problem	Solution	Easy	Yes

Linked List

S.no	Title	Problem	Solution	Difficulty	Revisit Require
1.	Design Linked List	Problem	SolutionSolution2	Medium	Yes
2.	Linked List Cycle	Problem	Solution	Easy	No
3.	Linked List Cycle Detection 2	Problem	Solution	Medium	Yes
4.	Intersection of Two Linked List	Problem	Solution	Easy	Yes
5.	Remove Nth Node From End of List	Problem	Solution	Medium	No
6.	Reverse Linked List	Problem	Solution	Easy	Yes Recursion is Killing me.
7.	Remove Linked List Elements	Problem	Solution	Easy	Yes Recursion
8.	Odd Even Linked List	Problem	Solution	Medium	Yes Recursion and Better Structuring
9.	Palindrome Linked List	Problem	Solution	Easy	Yes
10.	Merge Two Sorted Lists	Problem	Solution	Easy	Yes
11.	Add Two Numbers	Problem	Solution	Medium	Yes
12.	Flatten a Multilevel Doubly Linked List	Problem	Solution	Medium	Yes
13.	Copy List With Random Pointer	Problem	Solution	Medium	Yes
14.	Rotate List	Problem	Solution	Medium	No

Recursion

S.no	Title	Problem	Solution	Difficulty	Revisit Require
1.	Sort an Array	Problem	Solution	Medium	No
2.	Delete Middle Element In a Stack	Problem	Solution	Easy	No
3.	Reverse A Stack	Problem	Solution	Easy	No
4.	K-th Symbol in Grammar	Problem	Solution	Medium	Yes
5.	Tower Of Hanoi	Problem	Solution	Medium	Yes

Hashing

S.no	Title	Problem	Solution	Difficulty	Revisit Require
1.	String Matching	Problem	Solution	Basic	Yes

Heaps

S.no	Title	Problem	Solution	Difficulty	Revisit Require
1.	Relative Ranks	Problem	Solution	Easy	-
2.	Kth Largest Element	Problem	Solution	Medium	No