Last year, I went to Michigan to visit a friend during holiday season. But why not spending the time with my family? Well, plane ticket back to my hometown costs too much. And for the same reason, ...
Leetcode 56 - Merge Intervals
Link to Problem Problem Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the i...
Leetcode 495 - Teemo Attacking
Link to problem Problem Our hero Teemo is attacking an enemy Ashe with poison attacks! When Teemo attacks Ashe, Ashe gets poisoned for a exactly duration seconds. More formally, an attack at seco...
Leetcode 1711 - Count Good Meals
Link to Problem Problem A good meal is a meal that contains exactly two different food items with a sum of deliciousness equal to a power of two. You can pick any two different foods to make a g...
Leetcode 1792 - Maximum Average Pass Ratio
Link to Problem Problem There is a school that has classes of students and each class will be having a final exam. You are given a 2D integer array classes, where classes [i] = [passi, totali]. Y...
Leetcode 1719 - Number Of Ways To Reconstruct A Tree
Link to problem Problem You are given an array pairs, where pairs[i] = [xi, yi], and: There are no duplicates xi < y1 Let ways be the number of rooted trees that satisfy the following c...
Looking at the Hiring Freeze as a New Grad
After received an email about Amazon cancelled their hiring event “Amazon day” on account of the Tech Industry Hiring Freeze, I felt quite depressed. Although I am doing by best to keep myself moti...
Leetcode 1822 - Sign of the Product of an Array
Link to problem Problem There is a function signFunc(x) that returns: 1 if x is positive. -1 if x is negative. 0 if x is equal to 0. You are given an integer array nums. Let product be ...
Leetcode 1497 - Check If Array Pairs Are Divisible by k
Link to problem Problem Given an array of integers arr of even length n and an integer k. We want to divide the array into exactly n / 2 pairs such that the sum of each pair is divisible by k. R...
Holo Bot
Holo Bot is one of my projects that is still being maintained. It is a discord bot that checkes web servies and help notify users with new contents. After some years (2, to be more specific), many ...