原创 Leetcode: Department Highest Salary
The Employee table holds all employees. Every employee has an Id, a salary, and there is also a column for the departme
2018-09-03 05:44:49
原创 Leetcode: Rank Scores
Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that af
2018-09-03 05:44:49
1
原创 Euler: Integer right triangles
If p is the perimeter of a right angle triangle with integral length sides, {a,b,c}, there are exactly three solutions
2018-09-03 05:44:49
原创 Euler: Non-abundant sums
Problem A perfect number is a number for which the sum of its proper divisors is exactly equal to the number. For examp
2018-09-03 05:44:49
1
原创 Hadoop系統的守護進程
Hadoop系統在正常啓動後有五個重要的JVM進程，分別是NameNode，SecondaryNameNode，DataNode，JobTracker，TaskTracker。這五個進程肩負着HDFS在存儲和計算上的各項任務。
2018-09-03 05:44:48
原创 Euler: Amicable numbers
Amicable numbers This is the 21st issue of Euler Project Challenge Game. Let d(n) be defined as the sum of proper divis
2018-09-03 05:44:48
2
原创 Leetcode:Excel Sheet Column Number
Excel表格的列數 好久沒做leetcode，好久也沒寫博客。增加了許多很好的變化，Leetcode增加了Accepted Solutions Runtime Distribution，能夠看到自己的代碼的效率和別人比起來在怎麼樣的位子
2018-09-03 05:44:48
原创 Euler: Counting Sundays
Problem 19. You are given the following information, but you may prefer to do some research for yourself. 1 Jan 1900 w
2018-09-03 05:44:48