题目链接:
https://leetcode-cn.com/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof/
class Solution {
public String reverseLeftWords(String s, int n) {
String rightstring=s.substring(0,n);
String leftstring=s.substring(n,s.length());
return leftstring+rightstring;
}
}
字符串切割,拼接
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