摘要:
Given a set of distinct positive integers, find the largest subset such that every pair (Si, Sj) of elements in this subset satisfies: Si % Sj = 0 or 阅读全文
摘要:
Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from t 阅读全文
摘要:
A message containing letters from A-Z is being encoded to numbers using the following mapping:'A' -> 1 Given an encoded message containing digits, det 阅读全文