# Sum of Digits of String After Convert solution leetcode Biweekly Contest 57 United States

You are given a string `s`

consisting of lowercase English letters, and an integer `k`

.

First, **convert** `s`

into an integer by replacing each letter with its position in the alphabet (i.e., replace `'a'`

with `1`

, `'b'`

with `2`

, …, `'z'`

with `26`

). Then, **transform** the integer by replacing it with the **sum of its digits**. Repeat the **transform** operation `k`

** times** in total.

For example, if `s = "zbax"`

and `k = 2`

, then the resulting integer would be `8`

by the following operations:

**Convert**:`"zbax" ➝ "(26)(2)(1)(24)" ➝ "262124" ➝ 262124`

**Transform #1**:`262124 ➝ 2 + 6 + 2 + 1 + 2 + 4 ➝ 17`

**Transform #2**:`17 ➝ 1 + 7 ➝ 8`

Return *the resulting integer after performing the operations described above*.

**Example 1:**

Input:s = "iiii", k = 1Output:36Explanation:The operations are as follows: - Convert: "iiii" ➝ "(9)(9)(9)(9)" ➝ "9999" ➝ 9999 - Transform #1: 9999 ➝ 9 + 9 + 9 + 9 ➝ 36 Thus the resulting integer is 36.

**Example 2:**

Input:s = "leetcode", k = 2Output:6Explanation:The operations are as follows: - Convert: "leetcode" ➝ "(12)(5)(5)(20)(3)(15)(4)(5)" ➝ "12552031545" ➝ 12552031545 - Transform #1: 12552031545 ➝ 1 + 2 + 5 + 5 + 2 + 0 + 3 + 1 + 5 + 4 + 5 ➝ 33 - Transform #2: 33 ➝ 3 + 3 ➝ 6 Thus the resulting integer is 6.

**Example 3:**

Input:s = "zbax", k = 2Output:8

**Constraints:**

`1 <= s.length <= 100`

`1 <= k <= 10`

`s`

consists of lowercase English letters.