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g0701_0800.s0761_special_binary_string.readme.md Maven / Gradle / Ivy

761\. Special Binary String

Hard

**Special binary strings** are binary strings with the following two properties:

*   The number of `0`'s is equal to the number of `1`'s.
*   Every prefix of the binary string has at least as many `1`'s as `0`'s.

You are given a **special binary** string `s`.

A move consists of choosing two consecutive, non-empty, special substrings of `s`, and swapping them. Two strings are consecutive if the last character of the first string is exactly one index before the first character of the second string.

Return _the lexicographically largest resulting string possible after applying the mentioned operations on the string_.

**Example 1:**

**Input:** s = "11011000"

**Output:** "11100100"

**Explanation:**

    The strings "10" [occuring at s[1]] and "1100" [at s[3]] are swapped.
    This is the lexicographically largest string possible after some number of swaps. 

**Example 2:**

**Input:** s = "10"

**Output:** "10"

**Constraints:**

*   `1 <= s.length <= 50`
*   `s[i]` is either `'0'` or `'1'`.
*   `s` is a special binary string.