1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
| class Solution {
public:
string countAndSay(int n) {
string ret = "1";
for(int i = 2; i <= n; ++i)
{
int num = 1;
char pre = ret[0];
string tmp;
for(int j = 1, sz = ret.size(); j < sz; ++j)
{
if(ret[j] != pre)
{
tmp += (char)(num + '0');
tmp += pre;
pre = ret[j];
num = 1;
}else
++num;
}
tmp += (char)(num + '0');
tmp += pre;
ret = tmp;
}
return ret;
}
};
|