294.故障键盘

2810. 故障键盘 - 力扣（LeetCode）

class Solution {
    public String finalString(String s) {
        StringBuilder sb = new StringBuilder();
        for(int i=0;i<s.length();i++){
            if(s.charAt(i)=='i'){
                sb.reverse();
            }
            else{
                sb.append(s.charAt(i));
            }
        }
        return sb.toString();
    }
}

class Solution(object):
    def finalString(self, s):
        sb = []
        for char in s:
            if char == 'i':
                sb.reverse()
            else:
                sb.append(char)
        return ''.join(sb)