例题6-4 Broken Keyboard UVa11988
题目分析:
起初这道题目没有做出来,原因是我一直想把整块区域一并插入,而不是逐个插入。今后做题应该注意这个问题,把问题分解去考虑,也许会少走许多弯路。
下边附上AC代码
#include <cstdio>
#include <cstring>
#include <cctype>
char s[100000 + 10];
int next[100000 + 10];
int main(){
while(scanf("%s", s + 1) == 1){
int len=strlen(s+1);
int cur = 0,last=0;
next[0] = 0;
for(int i = 1;i <= len;i++){
if(s[i] =='['){
cur=0;
}
else if(s[i] ==']'){
cur=last;
}
else {
next[i]=next[cur];
next[cur]=i;
if(cur == last)last = i;
cur=i;
}
}
for(int i = next[0];i != 0;i = next[i]){
printf("%c",s[i]);
}
printf("\n");}
return 0;
}
//
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