摘要： Ugly number is a number that only have factors 2, 3 and 5. Design an algorithm to find the nth ugly number. The first 10 ugly numbers are 1, 2, 3, 4, 阅读全文

摘要： Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area. Subscribe to see which companies 阅读全文

摘要： The size of the hash table is not determinate at the very beginning. If the total size of keys is too large (e.g. size >= capacity / 10), we should do 阅读全文