旋转字符串
public class Solution {
/**
* @param str: An array of char
* @param offset: An integer
* @return: nothing
*/
public void rotateString(char[] str, int offset) {
// write your code here
if(offset == 0 || str.length == 0){
return;
}
offset = offset % str.length;
char[] temp = new char[offset];
for(int i = 0; i < offset; i++){
temp[i] = str[str.length - offset + i];
}
for(int i = str.length - offset - 1; i >= 0; i--){
str[i + offset] = str[i];
}
for(int i = 0; i < offset; i++){
str[i] = temp[i];
}
}
}
