Package g2101_2200.s2124_check_if_all_as_appears_before_all_bs

Class Solution

java.lang.Object
g2101_2200.s2124_check_if_all_as_appears_before_all_bs.Solution
public class Solution extends Object
2124 - Check if All A’s Appears Before All B’s.

Easy

Given a string s consisting of only the characters 'a' and 'b', return true if every 'a' appears before every 'b' in the string. Otherwise, return false.

Example 1:

Input: s = “aaabbb”

Output: true

Explanation:

The ’a’s are at indices 0, 1, and 2, while the ’b’s are at indices 3, 4, and 5.

Hence, every ‘a’ appears before every ‘b’ and we return true.

Example 2:

Input: s = “abab”

Output: false

Explanation:

There is an ‘a’ at index 2 and a ‘b’ at index 1.

Hence, not every ‘a’ appears before every ‘b’ and we return false.

Example 3:

Input: s = “bbb”

Output: true

Explanation: There are no ’a’s, hence, every ‘a’ appears before every ‘b’ and we return true.

Constraints:

  • 1 <= s.length <= 100
  • s[i] is either 'a' or 'b'.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • checkString

      public boolean checkString(String s)