LeetCode 101

LeetCode questions practice

Questions

02. Greedy

• [455] Assign Cookies (Easy)
• [135] Candy (Hard)
• [435] Non-overlapping Intervals (Medium)

03. Double Pointer

• [167] Two Sum II - Input Array Is Sorted (Easy)
• [88] Merge Sorted Array (Easy)
• [142] Linked List Cycle II (Medium)

04. Binary Search

• [69] Sqrt(x) (Easy)
• [34] Find First and Last Position of Element in Sorted Array (Medium)

05. Sorting

• [215] Kth Largest Element in an Array (Medium)
• [347] Top K Frequent Elements (Medium)

11. Data Structure

• [448] Find All Numbers Disappeared in an Array (Easy)
• [48] Rotate Image (Medium)
• [240] Search a 2D Matrix II (Medium)
• [769] Max Chunks To Make Sorted (Medium)
• [155] Min Stack (Easy)
• [20] Valid Parentheses (Easy)
• [739] Daily Temperatures (Medium)
• [23] Merge k Sorted Lists (Hard)
• [1] Two Sum (Easy)
• [303] Range Sum Query - Immutable (Easy)

12. String

• [242] Valid Anagram (Easy)
• [205] Isomorphic Strings (Easy)

13. Linked List

• [206] Reverse Linked List (Easy)
• [21] Merge Two Sorted Lists (Easy)

14.Tree

• [104] Maximum Depth of Binary Tree (Easy)
• [110] Balanced Binary Tree (Easy)
• [637] Average of Levels in Binary Tree (Easy)
• [144] Binary Tree Preorder Traversal (Easy)
• [669] Trim a Binary Search Tree (Medium)
• [208] Implement Trie (Prefix Tree) (Medium)