Wednesday, November 27, 2024

[System Design] Design an efficient parking lot system

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System requirements Functional: User can reserve a parking spot. User pays for the reservation. User can park a car on the parking spot. Use...
Sunday, January 15, 2023

[Leetcode]: 2536. Increment Submatrices by One

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You are given a positive integer n, indicating that we initially have an n x n 0-indexed integer matrix mat filled with zeroes. You are also...
Sunday, June 5, 2022

[Leetcode] 2296. Design a Text Editor

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2296. Design a Text Editor Design a text editor with a cursor that can do the following: Add text to where the cursor is. Delete text from w...
Saturday, June 4, 2022

[Leetcode] 2293. Min Max Game

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2293. Min Max Game You are given a 0-indexed integer array nums whose length is a power of 2. Apply the following algorithm on nums: Let n b...
Saturday, May 7, 2022

[Leetcode] 2145. Count the Hidden Sequences

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2262. Total Appeal of A String The appeal of a string is the number of distinct characters found in the string. For example, the appeal of ...
Saturday, January 29, 2022

[Leetcode] 2145. Count the Hidden Sequences

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2145. Count the Hidden Sequences You are given a 0-indexed array of n integers differences, which describes the differences between each pai...
Tuesday, December 28, 2021

[Leetcode] 813. Largest Sum of Averages

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813. Largest Sum of Averages You are given an integer array nums and an integer k. You can partition the array into at most k non-empty adja...