题解 | #左旋转字符串#
左旋转字符串
http://www.nowcoder.com/practice/12d959b108cb42b1ab72cef4d36af5ec
function LeftRotateString(str, n)
{
// write code here
if(str === null) return "";
let arr = str.split('');
while(n) {
arr.push(arr.shift())
n--
}
return arr.join('')
}
module.exports = {
LeftRotateString : LeftRotateString
};
