- Difficulty: Medium
- Tags: LeetCode, Medium, Array, Math, String, leetcode-2575, O(n), O(1), Prefix Sum
Problem
You are given a 0-indexed string word
of length n
consisting of digits, and a positive integer m
.
The divisibility array div
of word
is an integer array of length n
such that:
div[i] = 1
if the numeric value ofword[0,...,i]
is divisible bym
, ordiv[i] = 0
otherwise.
Return the divisibility array of word
.
Example 1:
Input: word = "998244353", m = 3 Output: [1,1,0,0,0,1,1,0,0] Explanation: There are only 4 prefixes that are divisible by 3: "9", "99", "998244", and "9982443".
Example 2:
Input: word = "1010", m = 10 Output: [0,1,0,1] Explanation: There are only 2 prefixes that are divisible by 10: "10", and "1010".
Constraints:
1 <= n <= 105
word.length == n
word
consists of digits from0
to9
1 <= m <= 109