1,40 one hundred million 32-bit integers, disorderly, not duplicate, which lack an integer, integer to find out which one is missing, 1G memory limit
2, a server, a client, the client sends a request to the server, the server records the processing time spent for each request, the ordering of 99% calculated time is the number of positions (a, dynamic growth, meaning every moment there will be a request to access B, C sorted, 99% of the mean position, after the first 99 100 If the current data is stored, to be sorted, after the first 990 If the current data 1000 is stored, to be sorted)
3, no such method is an exception thrown Shashi Hou asked what stage is thrown in the JVM loads the linked initialize the stage, and asked what bytecode instructions
4, SpringMVC use of restful style, talk about
5, the JUC package under which you have used, to talk about
6, the CPU is operating explosion soared how to confirm where is the problem
7, ConcurrentHashMap lock granularity optimization
8, database indexing role
indexed abc three and asked ac bc ba will not use the index