Coding Tests

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Leetcode 75

• Leetcode Grind 75 is a collection of coding test practice sets. It aims to cover all major topics in programming exams in 8 weeks.
• Will use Python (main language) and C++ (supplementary language)
• Link

Data Structures

• QuickSelect TODO
• Trie TODO

Stage 1

• 0001 Two Sum
• 0020 Valid Parentheses
• 0021 Merge Two Sorted Lists
• 0121 Best Time to Buy and Sell Stock
• 0125 Valid Palindrome
• 0226 Invert Binary Tree
• 0242 Valid Anagram
• 0704 Binary Search
• 0733 Flood Fill
• 0053 Maximum Subarray
• 0235 LCA of a Binary Search Tree
• 0110 Balanced Binary Tree
• 0141 Linked List Cycle

Stage 2

• 0232 Implement Queue using Stacks
• 0278 First Bad Version
• 0383 Ransom Note
• 0070 Climbing Stairs
• 0409 Longest Palindrome
• 0206 Reverse Linked List
• 0169 Majority Element
• 0067 Add Binary
• 0543 Diameter of Binary Tree
• 0876 Middle of the Linked List
• 0104 Maximum Depth of Binary Tree
• 0217 Contains Duplicate

Stage 3

• 0057 Insert Interval
• 0542 01 Matrix
• 0973 K Closest Points to Origin
• 0003 Longest Substring Without Repeating Characters
• 0015 3Sum
• Binary Tree Level Order Traversal
• Clone Graph
• Evaluate Reverse Polish Notation

Stage 4

• Course Schedule
• Implement Trie (Prefix Tree)
• Coin Change
• Product of Array Except Self
• Min Stack
• Validate Binary Search Tree
• Number of Islands
• Rotting Oranges

Stage 5

• Search in Rotated Sorted Array
• Combination Sum
• Permutations
• Merge Intervals
• Lowest Common Ancestor of a Binary Tree
• Time Based Key-Value Store
• Accounts Merge
• Sort Colors

Stage 6

• Word Break
• Partition Equal Subset Sum
• String to Integer (atoi)
• Spiral Matrix
• Subsets
• Binary Tree Right Side View
• Longest Palindromic Substring
• Unique Paths
• Construct Binary Tree from Preorder and Inorder Traversal

Stage 7

• Container With Most Water
• Letter Combinations of a Phone Number
• 0079 Word Search
• Find All Anagrams in a String
• Minimum Height Trees
• Task Scheduler
• LRU Cache

Stage 8

• Kth Smallest Element in a BST
• Minimum Window Substring
• Serialize and Deserialize Binary Tree
• Trapping Rain Water
• Find Median from Data Stream
• Word Ladder
• Basic Calculator
• Maximum Profit in Job Scheduling
• Merge k Sorted Lists
• Largest Rectangle in Histogram

Additional

• 1448 Count Good Nodes in Binary Tree
• 0002 Add Two Numbers
• 0199 Binary Tree Right Side View
• 1046 Last Stone Weight
• 0215 Kth Largest Element in an Array TODO
• 0079 Word Search
• 1290 Convert Binary Number in a Linked List to Integer
• 0059 Spiral Matrix II