TopCoder Statistics - Problem Statement This problem is short. Note that we just need to count the count of number's positions to change. We don't care the number of moves we did. So we sort the original array, compare it to the original a…

TopCoder Statistics - Problem Statement This problem is Easy. Note that write clean and easy-reading code, do not use much tricky. Because it may cause some bugs that can not be found easily. For each substring, compare the first half of t…

I have a huge document directory in my Linux which I copied from my external hard drive long long ago. My hard disk is almost full on my Linux. So I want to move these files to the external to save more space for my Linux. However, I am no…