This repository contains interview based coding questions on Data Structures in Java

100DaysOfCode

#LinkedLists

DAY	PROBLEM
1	Add Last In Linked List
2	Display a LinkedList
3	Remove First in Linked List
4	Get value in LinkedList
5	Add first in LinkedList
6	Add At Index in LinkedList
7	Remove Last In Linked List
8	Remove At Index in LinkedList
9	Reverse A Linked List (data Iterative)
10	Reverse Linked List (pointer Iterative)
11	LinkedList to Stack Adapter
12	LinkedList to Queue Adapter
13	Kth Node From End Of Linked List
14	Mid Of Linked List
15	Merge-two-sorted-linked-lists-
16	Merge Sort A Linked List
	Remove Duplicates In A Sorted Linked List
17	Odd Even Linked List
18	K-Reverse-LinkedList
	Reverse-using recursion
19	Reverse LinkedList using pointers
20	Is Linked List a Palindrome
	Fold a Linked List
21	Intersection of Linked Lists
	Add Two Linked Lists using recursion

#Generic Trees

DAY	PROBLEM
22	Display a Generic Tree
	Size of a Generic Tree
23	Height of a Generic Tree
	Maximum node-data in a Generic Tree
	Traversal
24	Level Order in Generic Trees
25	Level Order Linewise Generic Trees
26	Level Order Linewise Zig Zag
	Mirror Image Generic Trees
27	Remove Leaves in Generic Trees
	Linearize a Generic Trees
28	Find a node in Generic Trees
29	Node To Root Path In Generic Tree
30	Lowest Common Ancestor
	Distance between two nodes
31	Are Two Generic Trees Similar
32	Are Trees Mirror in Shape
	Is Generic Tree Symmetric
	Predecessor and Successor
33	Kth Largest Element
	Ceil and Floor in Generic Trees
34	Diameter of a Generic Tree
	Iterativee-preorder-postorder
	Node with maximum subtree sum

#Binary Trees

DAY	PROBLEM
35	Size,Sum,Max,Height
36	Levelorder Traversal Of Binary Tree
37	Iterative-pre-post-in-binary-tree
38	Node-To-Root-Path
39	Print-K-Levels-Down
40	Path-Leaf-From-Node
41	Print-K-Nodes-Away
42	Print-Single-Child-nodes
43	Remove leaves from Binary Trees
44	Diameter of a Binary Tree
45	Tilt of a Binary Tree

#Binary Search Trees

DAY	PROBLEM
46	Size,Max,Min,FindinBST
47	Add node to BST
48	Remove node from BST
49	Replace with sum of larger in BST
50	Lowest common ancestor in BST

#HashMap

DAY	PROBLEM
51	Highest Frequency Character
52	Get common elements-1
53	Get common elements-2
54	Longest Consecutive Sequence
55	K-Largest Elements in an Array

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