Coding challenges written in Java and other languages.

Data Structures and Algorithms: Data Structures and Algorithms

Leetcode: Leetcode

Completed:

Number	Name	Link
1	Two Sum	https://leetcode.com/problems/two-sum/
7	Reverse Integer	https://leetcode.com/problems/reverse-integer/
9	Palindrome Number	https://leetcode.com/problems/palindrome-number/
13	Roman to Integer	https://leetcode.com/problems/roman-to-integer/
14	Common Longest Prefix	https://leetcode.com/problems/longest-common-prefix/
20	Valid Parantheses	https://leetcode.com/problems/valid-parentheses/
53	Average	https://leetcode.com/problems/average-salary-excluding-the-minimum-and-maximum-salary/
88	Merge Arrays
94	Inorder traversal	https://leetcode.com/problems/binary-tree-inorder-traversal/
108	Sorted Array to BinarySearchTree	https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
109	Sorted List to BinarySearchTree	https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/
144	Preorder traversal	https://leetcode.com/problems/binary-tree-preorder-traversal/
145	Postorder traversal	https://leetcode.com/problems/binary-tree-postorder-traversal/
191	Number of 1 bits
217	Count Odd Numbers	https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/
230	Kth Smallest in BinarySearchTree	https://leetcode.com/problems/kth-smallest-element-in-a-bst/
258	Add Digits	https://leetcode.com/problems/add-digits/
450	Delete from BinarySearchTree	https://leetcode.com/problems/delete-node-in-a-bst/
700	Search BinarySearchTree	https://leetcode.com/problems/search-in-a-binary-search-tree/
701	Insert into BinarySearchTree	https://leetcode.com/problems/insert-into-a-binary-search-tree/
976	Largest Perimeter
1008	BinarySearchTree from Preorder
1281	Difference of product and sum
1382	Balance BinarySearchTree	https://leetcode.com/problems/balance-a-binary-search-tree/
1470	Shuffle the Array	https://leetcode.com/problems/shuffle-the-array/
1480	Running Sum of Array	https://leetcode.com/problems/running-sum-of-1d-array/
1491	Maximum Subarray	https://leetcode.com/problems/maximum-subarray/
1523	Contains Duplicate	https://leetcode.com/problems/contains-duplicate/
1528	Shuffle String	https://leetcode.com/problems/shuffle-string/
1603	Design Parking System	https://leetcode.com/problems/design-parking-system/
1672	Richest Wealth	https://leetcode.com/problems/richest-customer-wealth/
1920	Array Permutation	https://leetcode.com/problems/build-array-from-permutation/
1929	Concatenate arrays	https://leetcode.com/problems/concatenation-of-array/
2011	Value of a Variable/https://leetcode.com/problems/final-value-of-variable-after-performing-operations/
2114	Number of Words/https://leetcode.com/problems/maximum-number-of-words-found-in-sentences/
2235	Add two integers	https://leetcode.com/problems/add-two-integers/
2236	Root Equals Sum of Children	https://leetcode.com/problems/root-equals-sum-of-children/