[数据结构与算法]#力扣LeetCode1945. 字符串转化后的各位数字之和 @FDDLC

题目描述：

1945. 字符串转化后的各位数字之和 - 力扣（LeetCode） (leetcode-cn.com)

自测用例：

"iiii"
1
"leetcode"
2
"zbax"
2
"abcdefghijklmnopqrstuvwxyz"
1
"abcdefghijklmnopqrstuvwxyz"
2
"abcdefghijklmnopqrstuvwxyz"
3
"abcdefghijklmnopqrstuvwxyz"
4
"abcdefghijklmnopqrstuvwxyz"
5
"abcdefghijklmnopqrstuvwxyz"
10
"abcdefghijklmnopqrstuvwxyz"
9
"abcdefghijklmnopqrstuvwxyz"
8

Java代码：

class Solution {
    public int bitSum(int n){
        int ans=0;
        for(;n!=0;n/=10)ans+=n%10;
        return ans;
    }
    public int getLucky(String s, int k) {
        int[] m={1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,10,2,3,4,5,6,7,8};
        int ans=0;
        for(int e:s.toCharArray())ans+=m[e-'a'];
        for(int i=1;i<k;i++)ans=bitSum(ans);
        return ans;
    }
}

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