class Solution { public: string convert(string s, int nRows) { if (nRows <= 1) return s; string res = ""; int size = 2 * nRows - 2; for (int i = 0; i < nRows; ++i) { for (int j = i; j < s.size(); j += size) { res += s[j]; int tmp = j + size - 2 * i; if (i != 0 && i != nRows - 1 && tmp < s.size()) res += s[tmp]; } } return res; } };
时间: 2024-10-12 19:57:10