CMU 11601 Coding BootCamp
知识点
1. 位运算
2. Parallism and Multi-threading
High level parallel system architechtures
Single Instruction Single Data (SISD)
Single Instruction Multiple Data (SIMD)
Multiple Instruction Multiple Data (MISD)
Multiple Instruction Multiple Data (MIMD)
heavy way: multiple instructions
light way: single instruction
serial/stochastic
Fine Grain
Coarse Grain
Embarassingly Parallism
parallism = ~Dependency
dependency种类
- naming dependency: 计算时使用一个之后会改变的值
- output dependency: 计算顺序对结果有影响
- control dependency: 上一步instruction决定当前运算是否要执行
- data dependency: 当前计算需要上一步计算的结果
better multithreading:
Synchornization: wait/notify
BlockingQueue
InClass
- what class can an inner class extended?
- any class
- 考察XOR
返回a,b之间的两两XOR最小的int maximum_XOR(int a, int b) {int min = Integer.MIN_VALUE;for(int i=a; i<=b; i++) {for(int j=a; j<=b; j++) {min = Math.max(min, i^j);}}return min;}
因midterm本周无shuffle和homework
