• [30 day leetcoding challenge] day 9


    Compare strings with backspace Hi, Hi. I ‘m a piggy. Welcome to 30 day leetcoding challenge. This is an official little event of leetcode. It can be seen on the official website that from April 1, the official will select a question every day and finish it within 24 hours to get a little reward. […]

  • [30 day leetcoding challenge] day 10


    Minimum stack Hi, everyone. I’m a pig. Welcome to the 30 day leetcoding challenge, the official small activity of “babies can understand” series. Here is the question on April 10, and the 155th in the list of questions – “the smallest stack” Title Description Design a supportpush,pop,topOperation, and can retrieve the minimum element stack in […]

  • [30 day leetcoding challenge] day 12


    The weight of the last stone Hi, everyone. I’m a pig. Welcome to the 30 day leetcoding challenge, a special series of “baby can understand”. Here is the question of April 12, and the 1046 in the list of questions – “the weight of the last stone” Title Description There is a pile of stones. […]

  • From the data of e-commerce, how about the price of masks


    Hi, everyone. I’m a pig. Today, novel coronavirus is not a problem for leetcode, but rather a recent and disturbing thing. background Piggy is not a biology student or a medical student, so there is nothing we can do about the analysis of the virus itself or related paper reading. However, I believe that we […]

  • Summary of native error types in JS


    Hi, everyone. I’m a pig. This time, let’s talk about the native error types in JS. original intention There may be little friends wondering, why does little pig write such an article? It’s a long story. Piggy’s working time is not long, and he has just graduated (hahaha, always 22 years old). But frankly speaking, […]

  • Leetcode weekly match for babies to understand – 170 – 1


    1309. Decoding letter to integer mapping Hi, everyone. I’m a pig. Welcome to the “baby can understand” series of leetcode weekly question solution. This is question 1 of issue 170, and also question 1309 in the title list – “decoding letter to integer mapping” Title Description Give you a strings, which consists of numbers (‘0 […]