Package g2301_2400.s2380_time_needed_to_rearrange_a_binary_string

Class Solution

  • public class Solution
extends Object
    2380 - Time Needed to Rearrange a Binary String.

    Medium

    You are given a binary string s. In one second, all occurrences of "01" are simultaneously replaced with "10". This process repeats until no occurrences of "01" exist.

    Return the number of seconds needed to complete this process.

    Example 1:

    Input: s = “0110101”

    Output: 4

    Explanation:

    After one second, s becomes “1011010”.

    After another second, s becomes “1101100”.

    After the third second, s becomes “1110100”.

    After the fourth second, s becomes “1111000”.

    No occurrence of “01” exists any longer, and the process needed 4 seconds to complete, so we return 4.

    Example 2:

    Input: s = “11100”

    Output: 0

    Explanation: No occurrence of “01” exists in s, and the processes needed 0 seconds to complete, so we return 0.

    Constraints:

    • 1 <= s.length <= 1000
    • s[i] is either '0' or '1'.

    Follow up:

    Can you solve this problem in O(n) time complexity?

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • secondsToRemoveOccurrences

        public int secondsToRemoveOccurrences​(String s)