左旋转字符串
左旋转字符串
http://www.nowcoder.com/questionTerminal/12d959b108cb42b1ab72cef4d36af5ec
public class Solution {
public String LeftRotateString(String str,int n) {
if(n<0 || str==null || str.length()==0)return "";
int len = str.length();
n = n%len;
str += str;
String temp=str.substring(n,len+n);
return temp;
}
}
