You are given a string num, representing a large integer. Return the largest-valued odd integer (as a string) that is a non-empty substring of num, or an empty string "" if no odd integer exists.
在 2023 年初，PyTorch 的 2.0 版本新增了一個 torch.compile() 的新功能，讓我們能夠在模型訓練/推理時能夠進一步提昇速度。與混合精度訓練的協同工作，經常能使我的訓練速度提昇一倍左右。
今天我在讀取已經被 torch.compile() 之後儲存起來的模型權重，發現模型權重是使用 OrderedDict 資料結構儲存著，而這種結構本身是有序序列，換言之它的資料內容是需要嚴格遵守排序的。
There are 3n piles of coins of varying size, you and your friends will take piles of coins as follows:
You are given a 0-indexed array of strings garbage where garbage[i] represents the assortment of garbage at the ith house. garbage[i] consists only of the characters 'M', 'P' and 'G' representing one unit of metal, paper and glass garbage respectively. Picking up one unit of any type of garbage takes 1 minute.
You are given four integers sx, sy, fx, fy, and a non-negative integer t.
In an infinite 2D grid, you start at the cell (sx, sy). Each second, you must move to any of its adjacent cells.
You are playing a video game where you are defending your city from a group of n monsters. You are given a 0-indexed integer array dist of size n, where dist[i] is the initial distance in kilometers of the ith monster from the city.
Read More »LeetCode: 1921-Eliminate Maximum Number of Monsters 解題紀錄
變分自動編碼器（Variational AutoEncoder, VAE) 是自動編碼器（AutoEncoder, AE）的進階變體，架構與原本的自動編碼器相似，同樣都是由編碼器（Encoder）和解碼器（Decoder）所組成。
Read More »[Machine Learning] Variational AutoEncoder (VAE) 筆記
CuPy 是一個開源的 GPU 加速數值計算函式庫，專為深度學習以及科學計算而設計。它和 Python 中著名的 NumPy 套件有許多相同的使用方法與函式，但更進一步能夠在 GPU 上執行運算。簡單來說，例如矩陣運算等能夠利用 GPU 平行化計算的用途，CuPy 能夠實現一定程度的加速。
Read More »使用 CuPy 來利用 GPU 提昇矩陣運算速度Given an integer columnNumber, return its corresponding column title as it appears in an Excel sheet.
