Given a string s
and a character c
that occurs in s
, return an array of integers answer
where answer.length == s.length
and answer[i]
is the distance from index i
to the closest occurrence of character c
in s
.
The distance between two indices i
and j
is abs(i - j)
, where abs
is the absolute value function.
Example 1:
Input: s = "loveleetcode", c = "e" Output: [3,2,1,0,1,0,0,1,2,2,1,0] Explanation: The character 'e' appears at indices 3, 5, 6, and 11 (0-indexed). The closest occurrence of 'e' for index 0 is at index 3, so the distance is abs(0 - 3) = 3. The closest occurrence of 'e' for index 1 is at index 3, so the distance is abs(1 - 3) = 2. For index 4, there is a tie between the 'e' at index 3 and the 'e' at index 5, but the distance is still the same: abs(4 - 3) == abs(4 - 5) = 1. The closest occurrence of 'e' for index 8 is at index 6, so the distance is abs(8 - 6) = 2.
Example 2:
Input: s = "aaab", c = "b" Output: [3,2,1,0]
Constraints:
1 <= s.length <= 104
s[i]
andc
are lowercase English letters.- It is guaranteed that
c
occurs at least once ins
.
[Array] [Two Pointers] [String]