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g0901_1000.s0942_di_string_match.readme.md Maven / Gradle / Ivy

942\. DI String Match

Easy

A permutation `perm` of `n + 1` integers of all the integers in the range `[0, n]` can be represented as a string `s` of length `n` where:

*   `s[i] == 'I'` if `perm[i] < perm[i + 1]`, and
*   `s[i] == 'D'` if `perm[i] > perm[i + 1]`.

Given a string `s`, reconstruct the permutation `perm` and return it. If there are multiple valid permutations perm, return **any of them**.

**Example 1:**

**Input:** s = "IDID"

**Output:** [0,4,1,3,2]

**Example 2:**

**Input:** s = "III"

**Output:** [0,1,2,3]

**Example 3:**

**Input:** s = "DDI"

**Output:** [3,2,0,1]

**Constraints:**

*   1 <= s.length <= 105
*   `s[i]` is either `'I'` or `'D'`.