题目: UVA - 11988Broken Keyboard (a.k.a. Beiju Text)(链表)
题目大意:某位程序员在用坏掉的键盘打字,这个键盘的home键和end键会是不是自己打印。然后现在给出这样的一串文字,要求你打印出之后会在屏幕上显示的字符串。
解题思路:home键是跳到这一行的开头开始打印,end键是跳到这一行的末尾开始打印。用一个链表将home和end之后的字符串串起来,之后在按顺序输出就可以了。碰到home键后面的字符串(从当前的home到另一个home或是end或是结束符为止)放到链表的前面。end的放后面。
代码:
#include <iostream> #include <algorithm> #include <string> #include <list> using namespace std; string str; list<string> l; list<string>::iterator it; void solve () { int n; string tmp; n = 0; for (int i = 0; i < str.length(); i++, n++) if (str[i] == ']' || str[i] == '[') break; tmp = ""; tmp = str.substr (0, n); l.push_back(tmp); for (int i = 0; i < str.length(); i++) { if(str[i] == '[') { n = 0; tmp = ""; for (int j = i + 1; j < str.length() && str[j] != ']' && str[j] != '['; j++) n++; tmp = str.substr(i + 1, n); l.push_front(tmp); i += n; } else if (str[i] == ']') { n = 0; tmp = ""; for (int j = i + 1; j < str.length() && str[j] != '[' && str[j] != ']'; j++) n++; tmp = str.substr(i + 1, n); l.push_back(tmp); i += n; } } } /* Print_it (const string &a) { cout<<a; }*/ int main () { while (cin>>str) { solve (); // for_each (l.begin(), l.end(), Print_it); for (it = l.begin(); it != l.end(); it++) cout<<*it; cout<<endl; l.erase(l.begin(), l.end()); } return 0; }
时间: 2024-11-04 21:57:35