Leetcode notes

Ordered solved problems with tags. * denotes in top interview questions.

• 001 Two sum * (array)
• 007 Reverse Integer * (string)
• 008 String to Integer (atoi) * (string)
• 009 Palindrome Number (array)
• 014 Longest Common Prefix * (string)
• 019 019 Remove Nth Node From End of List * (linkedlist)
• 021 Merge Two Sorted Lists * (linkedlist)
• 027 Remove Element (array)
• 028 Implement strStr() * (string)
• 035 Search Insert Position (array)
• 036 Validate sudoku * (array)
• 038 Count and Say * (string)
• 026 Remove duplicates from sorted array * (array)
• 048 Rotate image * (array)
• 066 Plus one * (array)
• 092 Reverse a single sublist * (linkedlist)
• 094 Binary Tree Inorder Traversal * (tree)
• 098 Validate Binary Search Tree * (tree)
• 101 Symmetric Tree * (tree)
• 102 Binary Tree Level Order Traversal * (tree)
• 103 Binary Tree Zigzag Level Order Traversal * (tree)
• 104 Maximum Depth of Binary Tree * (tree)
• 105 Construct Binary Tree from Preorder and Inorder Traversal * (tree)
• 108 Convert Sorted Array to Binary Search Tree * (tree)
• 116 Populating Next Right Pointers in Each Node * (tree)
• 119 Pascal’s Triangle II (array)
• 122 Best Time to Buy and Sell Stock II *(array)
• 125 Valid Palindrome * (string)
• 136 Single number * (array)
• 141 Linked List Cycle * (linkedlist)
• 167 Two Sum II - Input array is sorted (array)
• 169 Major Elements (array)
• 189 Rotate array * (array)
• 200 Number of Islands * (tree)
• 206 Reverse Linked List * (linkedlist)
• 217 Contains duplicates * (array)
• 230 Kth Smallest Element in a BST * (tree)
• 234 Palindrome Linked List * (linkedlist)
• 237 Delete Node in a Linked List * (linkedlist)
• 242 Valid Anagram * (string)
• 283 Move zeros * (array)
• 285 Inorder Successor in BST * (tree)
• 344 Reverse String * (string)
• 350 Intersection of two arrays II * (array)
• 387 First Unique Character in a String * (string)
• 683 K Empty Slots * (array)
• I1 I1 Maximum Fruit * (array)