# 1405. Longest Happy String

<https://leetcode.com/problems/longest-happy-string>

## Description

A string is called *happy* if it does not have any of the strings `'aaa'`, `'bbb'` or `'ccc'` as a substring.

Given three integers `a`, `b` and `c`, return **any** string `s`, which satisfies following conditions:

* `s` is *happy*and longest possible.
* `s` contains **at most** `a` occurrences of the letter `'a'`, **at most** `b` occurrences of the letter `'b'` and **at most** `c` occurrences of the letter `'c'`.
* `s`will only contain `'a'`, `'b'` and `'c'` letters.

If there is no such string `s` return the empty string `""`.

**Example 1:**

```
**Input:** a = 1, b = 1, c = 7
**Output:** "ccaccbcc"
**Explanation:** "ccbccacc" would also be a correct answer.
```

**Example 2:**

```
**Input:** a = 2, b = 2, c = 1
**Output:** "aabbc"
```

**Example 3:**

```
**Input:** a = 7, b = 1, c = 0
**Output:** "aabaa"
**Explanation:** It's the only correct answer in this case.
```

**Constraints:**

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

## ac

```java
```


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