leetcode 38 Count and Say C++
2016-06-08 10:28
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三个循环,总感觉很慢。。。
string countAndSay(int n) { if(!n) return ""; string str = "1"; while(--n){ string tmp; for(int i = 0 ;i<str.size(); i++){ int count = 1; while(i<str.size()-1&&str[i]==str[i+1]){ count++; i++; } tmp += to_string(count) + str[i]; } str = tmp; } return str; }
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