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g0801_0900.s0848_shifting_letters.readme.md Maven / Gradle / Ivy

848\. Shifting Letters

Medium

You are given a string `s` of lowercase English letters and an integer array `shifts` of the same length.

Call the `shift()` of a letter, the next letter in the alphabet, (wrapping around so that `'z'` becomes `'a'`).

*   For example, `shift('a') = 'b'`, `shift('t') = 'u'`, and `shift('z') = 'a'`.

Now for each `shifts[i] = x`, we want to shift the first `i + 1` letters of `s`, `x` times.

Return _the final string after all such shifts to s are applied_.

**Example 1:**

**Input:** s = "abc", shifts = [3,5,9]

**Output:** "rpl"

**Explanation:** We start with "abc". 

After shifting the first 1 letters of s by 3, we have "dbc".

After shifting the first 2 letters of s by 5, we have "igc". 

After shifting the first 3 letters of s by 9, we have "rpl", the answer.

**Example 2:**

**Input:** s = "aaa", shifts = [1,2,3]

**Output:** "gfd"

**Constraints:**

*   1 <= s.length <= 105
*   `s` consists of lowercase English letters.
*   `shifts.length == s.length`
*   0 <= shifts[i] <= 109