Category: algorithms
January 24, 2013
algorithms, beginner, brute force, codeforces, greedy algorithm, implementation, math, programming languages, python, search, simulation, tricks
The problem is from codeforces: http://www.codeforces.com/contest/265/problem/B This problem is not difficult, but it took me nearly 1:30 hr to get it right during the contest. I thought at first, the …
This problem is from codeforces: http://www.codeforces.com/problemset/problem/263/D This is a graph-related problem but it took me days to get it right. First i made a mistake in using Python language, see …
This is an actual technical exercise before interview (my friend asked me for help). The PDF requirement could be accessed . The problem statement is simple and clear, in …
The problem is from codeforces: http://www.codeforces.com/problemset/problem/262/B Two hints used to solve this problem are greedy and sorted numbers. The greedy approach turns negative numbers one by one in non-decreasing order …
December 30, 2012
algorithms, brute force, implementation, javascript, math, programming languages, python, string, tools / utilities, tricks, vbscript
In , the base 62 number conversion to base 10 is implemented. To extend the conversion to arbitrary bases, we can use base 10 as the intermediate base, i.e. …