README.md

剑指offer Study Timeline and Note

Time	剑指offer
7.19	1 - 6

Debug I found they using Macro for Debugging very interesting, they actually using something like:
```
#ifdef ... //Debug Mode
#define debug cout
#else
#define debug 0 && cout
#endif
int main(){
    // Stuff
    debug <<"Stuff..." <<endl;
```
Meaning that if Debug Mode is on, then somethings would be output, but if Debug Mode is off, then debug will be replaced by 0 && cout, when 0 && would end any expression, which meaning nothing would be output, and that's actually Debug Mode off.