Leetcode-Algorithms

Using: Arrays, Hash Table, LinkedList, Binary Search, Dynamic Programming, Stack , Heap, reedy, Sort, Tree DFS, BFS, Graph, Binary Search Tree, Recursion, Memoization, Queue ,Map, etc.

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• Leetcode

problems	Solutions	From
Add Two Numbers	Java	LeetCode Online Judge
Longest Substring Without Repeating Characters	Java	LeetCode Online Judge
ZigZag Conversion	Java	LeetCode Online Judge
Reverse Integer	Java	LeetCode Online Judge
String to Integer (atoi)	Java	LeetCode Online Judge
Palindrome Number	Java	LeetCode Online Judge
Longest Palindromic Substring	Java	LeetCode Online Judge
Roman to Integer	Java	LeetCode Online Judge
Longest Common Prefix	Java	LeetCode Online Judge
Word Ladder	Java	LeetCode Online Judge
Valid Parentheses	Java	LeetCode Online Judge
Merge Two Sorted Lists	Java	LeetCode Online Judge
Container With Most Water	Java	LeetCode Online Judge
Remove Duplicates from Sorted Array	Java	LeetCode Online Judge
Remove Element	Java	LeetCode Online Judge
Same Tree	Java	LeetCode Online Judge
Symmetric Tree	Java	LeetCode Online Judge
3Sum Closest	Java	LeetCode Online Judge
Sort Characters By Frequency	Java	LeetCode Online Judge
Kill Process	Java	LeetCode Online Judge
Isomorphic Strings	Java	LeetCode Online Judge
Intersection of Two Arrays	Java	LeetCode Online Judge
Palindrome Linked List	Java	LeetCode Online Judge
Minimum Absolute Difference in BST	Java	LeetCode Online Judge
Min Stack	Java	LeetCode Online Judge
Implement Stack using Queues	Java	LeetCode Online Judge
Search Insert Position	Java	LeetCode Online Judge
Sum of Left Leaves	Java	LeetCode Online Judge
Maximum Depth of Binary Tree	Java	LeetCode Online Judge
Next Greater Element I	Java	LeetCode Online Judge
Implement Queue using Stacks	Java	LeetCode Online Judge
Rotate Array	Java	LeetCode Online Judge
Rotate Array	Java	LeetCode Online Judge
Best Time to Buy and Sell Stock	Java	LeetCode Online Judge
Simplify Path	Java	LeetCode Online Judge
Evaluate Reverse Polish Notation	Java	LeetCode Online Judge
Contains Duplicate	Java	LeetCode Online Judge
Decode String	Java	LeetCode Online Judge
Search a 2D Matrix	Java	LeetCode Online Judge
Range Sum Query 2D - Immutable	Java	LeetCode Online Judge
Valid Anagram	Java	LeetCode Online Judge
Longest Word in Dictionary through Deleting	Java	LeetCode Online Judge
Sort List	Java	LeetCode Online Judge
Sort Colors	Java	LeetCode Online Judge
Maximum Subarray	Java	LeetCode Online Judge
Range Sum Query - Immutable	Java	LeetCode Online Judge
House Robber	Java	LeetCode Online Judge
Single Number	Java	LeetCode Online Judge
Happy Number	Java	LeetCode Online Judge
Count Primes	Java	LeetCode Online Judge
Word Pattern	Java	LeetCode Online Judge
Keyboard Row	Java	LeetCode Online Judge
Longest Harmonious Subsequence	Java	LeetCode Online Judge
Binary Tree Inorder Traversal	Java	LeetCode Online Judge
Clone Graph	Java	LeetCode Online Judge
Merge Two Binary Trees	Java	LeetCode Online Judge
117	Subtree of Another Tree	Java
118	Binary Tree Tilt	Java
119	Diameter of Binary Tree	Java
120	Path Sum	Java
121	Remove Duplicates from Sorted List	Java
122	Rotate List	Java
123	Reverse Linked List	Java
124	Guess Number Higher or Lower	Java
125	Two Sum II - Input array is sorted	Java
126	Beautiful Arrangement	Java
127	Delete Operation for Two Strings	Java
128	Construct String from Binary Tree	Java
129	Optimal Division	Java
130	Count and Say	Java
131	Merge Sorted Array	Java
132	Permutations	Java
133	Maximum Distance in Arrays	Java
134	Fizz Buzz	Java
135	Reverse String	Java
136	Move Zeroes	Java
137	Missing Number	Java
138	Repeated DNA Sequences	Java
139	Sum of Square Numbers	Java
140	Sum of Two Integers	Java
141	Excel Sheet Column Number	Java
142	Array Partition I	Java
143	Max Consecutive Ones	Java
144	Triangle	Java
145	Minimum Path Sum	Java
146	Summary Ranges	Java
147	Partition List	Java
148	Linked List Cycle	Java
149	Reorder List	Java
150	Balanced Binary Tree	Java
151	Validate Binary Search Tree	Java
152	Invert Binary Tree	Java
153	Binary Tree Paths	Java
154	Find Mode in Binary Search Tree	Java
155	Path Sum III	Java
156	Binary Tree Level Order Traversal	Java
157	Binary Tree Level Order Traversal II	Java
158	Average of Levels in Binary Tree	Java
159	Reverse Nodes in k-Group	Java
160	Maximum Product Subarray	Java
161	Kth Largest Element in an Array	Java
162	Kth Smallest Element in a BST	Java
163	Rotate List	Java
164	Combinations	Java
165	Path Sum II	Java
166	Sum Root to Leaf Numbers	Java
167	Maximum Average Subarray I	Java
168	Combination Sum	Java