暴力破解密碼 - C++ 遞迴方法實現
阿新 • • 發佈:2018-12-28
問題描述:
暴力破解密碼
假設有一個 4 位字母密碼,每位密碼是 a~e 之間的小寫字母
你能否編寫一段程式碼,來暴力破解該密碼?(可重複排序)
#include <iostream> #include<string> using std::string; using namespace std; void BreakPassword( string Words, int PasswordLen, string result) { if (result.length() == PasswordLen) { //C++中string型別不能直接輸出,需加頭問題#include<string>,不能用#include<string.h> cout << result << " "; return; } for (int i = 0; i < Words.length(); ++i) { string newResult = result; newResult.insert( newResult.end(), Words[i] ); BreakPassword(Words, PasswordLen, newResult); } } int _tmain(int argc, _TCHAR* argv[]) { int passwordLen = 4; string words("abcde"); string result = ""; BreakPassword(words, passwordLen, result); return 0; }