/algorithms

Primary LanguageJavaScript

# Title Solution Difficulty Data Structure
2 Add Two Numbers js, c medium linked list
3 Longest Substring Without Repeating Characters js medium string
5 Longest Palindromic Substring js medium string
7 Reverse Integer js easy math
9 Palindrome Number js easy math
14 Longest Common Prefix js easy array
15 3 Sum js medium array
16 3Sum Closest js, c medium array
17 Letter Combinations of a Phone Number js medium array
19 Remove Nth Node From End of List js medium linked list
20 Valid Parentheses js medium string
21 Merge Two Sorted Lists js, c easy linked list
24 Swap Nodes in Pairs js medium linked list
26 Remove Duplicates from Sorted Array js easy array
33 Search in Rotated Sorted Array js medium array
34 Find First and Last Position of Element in Sorted Array js medium array
35 Search Insert Position js easy array
39 Combination Sum js medium array
43 Multiply Strings js medium string
48 Rotate Image js medium array
53 Maximum Subarray js easy array
54 Spiral Matrix js medium array
55 Jump Game js medium array
60 Permutation Sequence js medium math
62 Unique Paths js medium array
63 Unique Paths II js medium array
66 Plus One js easy array
73 Set Matrix Zeroes js medium array
78 Subsets js medium array
80 Remove Duplicates from Sorted Array II js medium array
80 Remove Duplicates from Sorted Array II js medium array
83 Remove Duplicates from Sorted List js easy linked list
96 Unique Binary Search Trees js medium DP
100 Same Tree js easy tree
101 Symmetric Tree js easy tree
104 Maximum Depth of Binary Tree js easy tree
106 Construct Binary Tree from Inorder and Postorder Traversal js medium tree
118 Pascal's Triangle js easy array
119 Pascal's Triangle II js easy array
120 Triangle js medium array
127 Word Ladder js medium array
139 Word Break js medium DP
144 Binary Tree Preorder Traversal js medium tree
147 Insertion Sort List js medium linked list
152 Maximum Product Subarray js medium array
153 Find Minimum in Rotated Sorted Array js medium array
160 Intersection of Two Linked Lists js easy linked list
171 Excel Sheet Column Number js easy math
199 Binary Tree Right Side View js medium tree
200 Number of Islands js medium array
204 Count Primes js easy math
209 Minimum Size Subarray Sum js medium array
215 Kth Largest Element in an Array js medium array
216 Combination Sum III js medium array
230 Kth Smallest Element in a BST js medium tree
236 Lowest Common Ancestor of a Binary Tree js medium tree
257 Binary Tree Paths js easy tree
260 Single Number III js medium array
287 Find the Duplicate Number js medium array
338 Counting Bits js medium array
375 Guess Number Higher or Lower II js medium DP
383 Ransom Note js easy array
404 Sum of Left Leaves js easy tree
416 Partition Equal Subset Sum js medium DP
429 N-ary Tree Level Order Traversal cpp easy tree
442 Find All Duplicates in an Array js medium array
455 Assign Cookies js easy tree
494 Target Sum js medium DP
496 Next Greater Element I js easy array
526 Beautiful Arrangement js medium backtrack
547 Friend Circles js medium array
566 Reshape the Matrix js easy array
621 Task Scheduler js medium array
623 Add One Row to Tree js medium tree
637 Average of Levels in Binary Tree js easy tree
645 Set Mismatch js easy array
670 Maximum Swap js medium array
693 Binary Number with Alternating Bits js easy array
693 Binary Number with Alternating Bits js easy math
746 Min Cost Climbing Stairs js easy DP
763 Partition Labels js medium hashtable
811 Subdomain Visit Count js easy hashtable
821 Shortest Distance to a Character js easy string
844 Backspace String Compare js easy string
856 Score of Parentheses js medium string
884 Uncommon Words from Two Sentences js easy string
890 Find and Replace Pattern js medium string
896 Monotonic Array js easy tree
897 Increasing Order Search Tree js easy tree
914 X of a Kind in a Deck of Cards js easy math
917 Reverse Only Letters js easy tree
932 Beautiful Array js medium array
951 Flip Equivalent Binary Trees js medium tree