Jan. 12, 2021
Here is the link.
I continued to work on Leetcode algorithm practice.
Dec. 30, 2020
253. Meeting Rooms II
First practice - C# - SortedSet - Challenges - +-0.1 to separate start from end time
- Integer to English Words
First practice - C# - Check list - Take more than one hour
Jan. 5, 2021
158. Read N Characters Given Read4 II - Call multiple times
Troubleshooting - C# - "abcde", [1, 4], ["a", "bcde"] - Simulation
Working solution - C# - two lessons - variable - while or if
- Check If a Number Is Majority Element in a Sorted Array
Jan. 5, 2021 - Find the Kth Smallest Sum of a Matrix With Sorted Rows
First practice - C# - TLE 35/71 - DFS
Second practice - C# - copy idea - Time complexity - Each row maximum cost - Sorting
Jan. 6, 2021
839. Similar String Groups
Lesson learned - C# - Union Find - FindParent API - Union API - Failed
Second practice - C# - Union Find - Union API lesson learned
Best Time to Buy and Sell Stock III
C# - dynamic programming - case study - choose DP first always
C# - mock interview - performance - design issueBest Time to Buy and Sell Stock IV
First try - Hard to understand - C# - dynamic programming - research
Prepare facts to review - C# - dynamic programming - hard to copy ideas
January 12, 2021
- Count Good Nodes in Binary Tree
First practice - C# - Maximum value in the path - Employee Free Time
First practice - C# - SortedSet - Tuple<int, int, int> - challenge to make uniqueness - Find the Celebrity
C# - candidates - HashSet - For loop challenge - Reverse Nodes in k-Group
C# - Mock interview - Reverse first k nodes - recursive rest of linked list
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