leetcode 6 ZigZag Converesion

代码语言：javascript复制

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;
    }
};

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