刘一卜

摘要： When a number is expressed in decimal, thek-th digit represents a multiple of 10k. (Digits are numbered from right to left, where the least significant digit is number 0.) For example,When a number is expressed in binary, thek-th digit represents a multiple of 2k. For example,Inskew binary, thek-th 阅读全文

摘要： At an old railway station, you may still encounter one of the last remaining ``train swappers''. A train swapper is an employee of the railroad, whose sole job it is to rearrange the carriages of trains.Once the carriages are arranged in the optimal order, all the train driver has to do, is 阅读全文

摘要： Problem DescriptionProblems in Computer Science are often classified as belonging to a certain class of problems (e.g., NP, Unsolvable, Recursive). In this problem you will be analyzing a property of an algorithm whose classification is not known for all possible inputs.Consider the following algor. 阅读全文