Category: algorithms
October 14, 2012
algorithms, beginner, bit hacks, brute force, implementation, interview questions, math, programming languages, python, tricks
Q: n is a none-negative numbers, in order to let divides perfectly 7, characterise n. A: in binary representation is n ones. And 7 in binary is 111. The …
github: https://github.com/DoctorLai/Algorithms/tree/master/Queen n Queen problem can be dated back in 1848. Later, it was popular used in computer algorithm books that teach data structure and algorithms. The problem is to …
The problem is from codeforces: http://www.codeforces.com/problemset/problem/230/B The input of the numbers exceed a 4-byte integer, therefore, a long type (int64) should be used in Java. I feel like I …
Given two rectangles (as shown in the following figure), , are lower-left points while and are top-right points. We want to find out whether these two rectangles overlap each …
September 16, 2012
algorithms, batch script, beginner, code, code library, delphi, encryption, implementation, programming languages, string, tools / utilities, windows, windows command shell, windows scripting host
Rot13 and Rot5 are two ASCII rotation scheme that are made for alphabetic and digits respectively. The Rot13, namely, rotates the letter by 13 places, ‘A’ to ‘N’, ‘B’ …