悲剧文本(Broken Keyboard (a.k.a. Beiju Text),UVA 11988)
题目描述:

题目思路:
1.使用链表来重新定位各个字符
2.用数组实现链表
3.开一个数组list[i]来存储字符数组下一个字符的位置
#include <iostream>
#include <cstring>
using namespace std; const int maxn = + ;
int last,cur,list[maxn] ;
char s[maxn] ;
int main(int argc, char *argv[])
{
while(scanf("%s",s+) == )
{
int len = strlen(s+);
last = cur = ;
list[] = ; //指示位置的链表 for(int i = ;i <= len ;i++)
{
char ch = s[i] ;
if(ch == '[') cur = ;
else if(ch == ']') cur = last ;
else{
list[i] = list[cur] ; //光标跳转,指示开头
list[cur] = i;
if(cur == last) last = i ;
cur = i ;
}
}
for(int i = list[]; i != ;i = list[i])
printf("%c",s[i]);
cout << endl ;
}
return ;
}
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