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g1401_1500.s1405_longest_happy_string.readme.md Maven / Gradle / Ivy

1405\. Longest Happy String

Medium

A string `s` is called **happy** if it satisfies the following conditions:

*   `s` only contains the letters `'a'`, `'b'`, and `'c'`.
*   `s` does not contain any of `"aaa"`, `"bbb"`, or `"ccc"` as a substring.
*   `s` contains **at most** `a` occurrences of the letter `'a'`.
*   `s` contains **at most** `b` occurrences of the letter `'b'`.
*   `s` contains **at most** `c` occurrences of the letter `'c'`.

Given three integers `a`, `b`, and `c`, return _the **longest possible happy** string_. If there are multiple longest happy strings, return _any of them_. If there is no such string, return _the empty string_ `""`.

A **substring** is a contiguous sequence of characters within a string.

**Example 1:**

**Input:** a = 1, b = 1, c = 7

**Output:** "ccaccbcc"

**Explanation:** "ccbccacc" would also be a correct answer.

**Example 2:**

**Input:** a = 7, b = 1, c = 0

**Output:** "aabaa"

**Explanation:** It is the only correct answer in this case.

**Constraints:**

*   `0 <= a, b, c <= 100`
*   `a + b + c > 0`