题解 | #左旋转字符串#
左旋转字符串
http://www.nowcoder.com/practice/12d959b108cb42b1ab72cef4d36af5ec
import java.lang.*; public class Solution { public String LeftRotateString(String str,int n) { if(str==null||str.length()==0) return ""; if(n==0) return str; String tmp =str.substring(0,n); str =str.replace(tmp," "); str=str+tmp; String s=str.substring(1,str.length()); return s; } }