YoungForest's blog

After the National Day holiday, Second Senior Brother and I had a chance to go to Guangdong. We visited Guangzhou, Macau, and Hong Kong in order. On October 6, we set off from Beijing, took a 10-hour high-speed train to Guangzhou South Railway Station, and then checked into Guangdong Hotel. Guangzh

How should I enjoy the last holiday of 2018, National Day? I chose to join a group tour, Beijing Chuxin Outdoor, to go horseback riding on the Bashang Grassland in Fengning, Hebei. At 19:30 on the evening of September 30, we gathered at the south entrance of Huitong West Street and got on the bus. W

In September 2014, almost by accident, I came to the School of Computer Science at Beihang University. I did not expect that once I stepped through that door, there would be no going back. I went from a fresh-faced kid who had never touched code to a future engineer. Those four years were an importa

Yesterday I participated in an intern interview with JingChi Technology. This internship interview was arranged uniformly by the lab, not something I found myself. The format was online interview. There were two rounds in total, each expected to last one hour, but the second round actually only ask

Description: https://leetcode.com/problems/kth-largest-element-in-an-array/description/ Solution: https://leetcode.com/problems/kth-largest-element-in-an-array/discuss/ Difficulty: Medium This was a problem my senior schoolmate was asked in his interview with JingChi. His interview was in the morni

From August 21 to August 28, I spent seven days traveling in Shandong with a feeling of self-exile. When I was little, in 2008, I once followed my father and a tour group to Shandong. We visited the classic tourist cities, including Qingdao, Yantai, Weihai, and Dalian across the sea. I was still you

Description: https://leetcode.com/problems/convert-bst-to-greater-tree/description/ Solution: https://leetcode.com/problems/convert-bst-to-greater-tree/solution/ Difficulty: Easy Although this problem is Easy, writing a correct solution in one pass is still difficult. When you see a binary tree, yo

Description: https://leetcode.com/problems/single-number/description/ Solution: https://leetcode.com/problems/single-number/solution/ Difficulty: Easy The difficulty of the problem lies in this requirement: Your algorithm should have a linear runtime complexity. Could you implement it without using

A Tsinghua graduate was the interviewer. At the beginning, he asked me about my future work intentions. I answered “algorithm engineer,” but in fact I was interviewing for a development role, so the senior person lectured me a bit. He asked whether I had applied to the wrong group and whether I stil

To train my data mining ability more quickly, I plan to spend some time on Kaggle competitions over the next month. The current plan is to follow the competitions, Datasets, and expert notebooks under Tutorial as an introduction. After that, I will choose a simple regular competition to participate