Recently I'm writting a port scanner and I need to verify if some standard services are running on remote hosts as expected. The verification method is quite simple(but took me a long time), that is, using connect() to that port, then analyze the returned messages. All messages will be returned b...

For whom may only concern the final solution, please check the last part--The Whole Procedure.

Given a string S and a string T, count the number of distinct subsequences of T in S.

Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram. Above is a histogram where width of each bar is 1, given height = [2,1,5,6,2,3]. The largest rectangle is shown in the shaded area, which ha...