ZigZag Conversion

最新推荐文章于 2021-08-10 16:47:56 发布

sewssb001

最新推荐文章于 2021-08-10 16:47:56 发布

阅读量299

点赞数

分类专栏： Leetcode 文章标签： ZigZag Conversion

本文链接：https://blog.youkuaiyun.com/sewssb001/article/details/45600137

版权

Leetcode 专栏收录该内容

16 篇文章

订阅专栏

public class Solution {
    public String convert(String s, int nRows) {
        int len = s.length();  
        if (len == 0 || nRows <= 1) return s;  
          
        String[] ans = new String[nRows];  
        Arrays.fill(ans, "");  
        int row = 0, delta = 1;  
        for (int i = 0; i < len; i++) {  
            ans[row] += s.charAt(i);  
            row += delta;  
            if (row >= nRows) {  
                row = nRows-2;  
                delta = -1;  
            }  
            if (row < 0) {  
                row = 1;  
                delta = 1;  
            }  
        }  
          
        String ret = "";  
        for (int i = 0; i < nRows; i++) {  
            ret += ans[i];  
        }  
        return ret;  
    }
}